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High CPU usage and poor performance when doing very large number of read operations with HttpWebRequest in inefficient loop. #15583

Closed spouliot closed 5 years ago

spouliot commented 5 years ago

moved from https://github.com/xamarin/xamarin-macios/issues/6502

Steps to Reproduce

  1. Just execute this code: 
            byte[] buffer = new byte[4096];
        WebRequest wr = WebRequest.Create("http://cdimage.ubuntu.com/releases/18.04.2/release/ubuntu-18.04.2-server-amd64.iso");
        WebResponse wresp = wr.GetResponse();
        using (var respstream = wresp.GetResponseStream())
        {
            int readed = 0;
            do
            {
                readed = respstream.Read(buffer, 0, 4096);
            }
            while (readed > 0);
        }

Expected Behavior

On Windows it uses less than 1% CPU

Actual Behavior

On Mac it uses 100% CPU and the download speed is much slower.

Environment

=== Visual Studio Community 2019 for Mac ===

Version 8.1.3 (build 19)
Installation UUID: b4e9fda0-5f5b-444d-8b14-b7a89862046a
    GTK+ 2.24.23 (Raleigh theme)
    Xamarin.Mac 5.6.0.25 (d16-0 / 50f75273)

    Package version: 518010028

=== Mono Framework MDK ===

Runtime:
    Mono 5.18.1.28 (2018-08/223ea7ef92e) (64-bit)
    Package version: 518010028

=== NuGet ===

Version: 5.0.2.5988

=== .NET Core ===

Runtime: /usr/local/share/dotnet/dotnet
Runtime Version: 2.1.11
SDK: /usr/local/share/dotnet/sdk/2.1.700/Sdks
SDK Version: 2.1.700
MSBuild SDKs: /Library/Frameworks/Mono.framework/Versions/5.18.1/lib/mono/msbuild/Current/bin/Sdks

=== Xamarin.Profiler ===

Version: 1.6.10
Location: /Applications/Xamarin Profiler.app/Contents/MacOS/Xamarin Profiler

=== Updater ===

Version: 11

=== Apple Developer Tools ===

Xcode 10.2.1 (14490.122)
Build 10E1001

=== Xamarin.Mac ===

Version: 5.10.0.157 (Visual Studio Community)
Hash: 6bd94753
Branch: d16-1
Build date: 2019-06-12 17:28:48-0400

=== Xamarin.Android ===

Not Installed

=== Microsoft Mobile OpenJDK ===

Java SDK: Not Found

Android Designer EPL code available here:
https://github.com/xamarin/AndroidDesigner.EPL

=== Android Device Manager ===

Version: 1.2.0.44
Hash: aac645b
Branch: remotes/origin/d16-1
Build date: 2019-05-29 19:55:24 UTC

=== Xamarin Inspector ===

Version: 1.4.3
Hash: db27525
Branch: 1.4-release
Build date: Mon, 09 Jul 2018 21:20:18 GMT
Client compatibility: 1

=== Xamarin.iOS ===

Xamarin.iOS not installed.
Can't find mtouch or the Version file at /Library/Frameworks/Xamarin.iOS.framework/Versions/Current.

=== Xamarin Designer ===

Version: 16.1.0.467
Hash: f1657e133
Branch: remotes/origin/d16-1-new-document-model
Build date: 2019-06-18 21:57:42 UTC

=== Build Information ===

Release ID: 801030019
Git revision: 2d04b0145da8aa946d2cc9898fe2a59484e4f3f4
Build date: 2019-06-26 15:34:25+00
Build branch: release-8.1
Xamarin extensions: de240bddd6d1f96bfb1e7d11ce7ac5398956fe1d

=== Operating System ===

Mac OS X 10.14.4
Darwin 18.5.0 Darwin Kernel Version 18.5.0
    Mon Mar 11 20:40:32 PDT 2019
    root:xnu-4903.251.3~3/RELEASE_X86_64 x86_64

On which platforms did you notice this

[x] macOS [ ] Linux [ ] Windows

steveisok commented 5 years ago

@baulig can you provide any insight you might have?

baulig commented 5 years ago

I haven't looked into this in detail yet, but what you're doing is very inefficient, so it's not too surprising that you see poor performance.

A quick curl -I on that URL reveals that it's 925 MB in size:

$ curl -I http://cdimage.ubuntu.com/releases/18.04.2/release/ubuntu-18.04.2-server-amd64.iso
HTTP/1.1 200 OK
Date: Tue, 09 Jul 2019 19:17:43 GMT
Server: Apache/2.4.18 (Ubuntu)
Last-Modified: Sun, 10 Feb 2019 00:19:44 GMT
ETag: "37300000-5817f262ea8b9"
Accept-Ranges: bytes
Content-Length: 925892608
Content-Type: application/x-iso9660-image

This means that you're doing 226k read operation - that's a quarter of a million! If I counted correctly, then each reads allocates four objects plus two tasks and I'm not sure how many allocations the async task helpers make. So it's probably safe to assume that your loop is hitting the garbage collector with about two million allocations. Yeah, that's going to cost some CPU power ....

This code was written long before ValueTask<T>, so those allocations were unavoidable. Those allocations are for cancellations and async stuff - so it's not some kind of a buffer that could easily be reused.

All I can recommend you at the moment is to make your read buffer a lot larger, so you'll be doing fewer reads.

baulig commented 5 years ago

Deep diving into the code, there is one instance of WebCompletionSource (containing a TaskCompletionSource<Result> and a Result field) in WebResponseStream.ReadAsync(). This then calls the async ProcessRead(), which in turn calls HttpWebRequest.RunWithTimeout() where we allocate one CancellationTokenSource, call another async function before await-ing the async ServicePointScheduler.WaitAsync ().

ServicePointScheduler.WaitAsync() a helper method which in turn also allocates one CancellationTokenSource, does a Task.Delay (millisecondTimeout, cts.Token) and await Task.WhenAny (workerTask, timeoutTask).ConfigureAwait (false).

As you can see, there are a lot of those async methods involved and I probably miscounted the number of allocations in my last comment. And this still does not account for the actual read operation on the network stream.

In general, I do not apply the "won't fix" label lightly (and @steveisok please feel free to override my decision on that), but I don't think there is anything we can actually do about this apart from rewriting a very complex piece of code - with all the risks that come with such an endeavor.

However, may I ask you why you're using such a small buffer to read a large ISO file? Maybe there's something we can help you with to make your code more efficient. You could for instance experiment with larger buffer sizes to see whether that makes a difference.

pp111 commented 5 years ago

Hello, actually the buffer size does not make a huge difference. You can try with different (big) buffer sizes and the CPU usage will always be really high.

You can check also this other code: using (WebClient wc=new WebClient()) { wc.DownloadFileAsync(new Uri("http://cdimage.ubuntu.com/releases/18.04.2/release/ubuntu-18.04.2-server-amd64.iso"), "/Users/myuser/saved.iso"); } It is also using a huge amount of CPU in Mac while the download is in progress, and the download speed is not good.

In my opinion the problem is inside the WebClient / HttpWebRequest It would be great to change the WebClient to support native NSUrlSession like you did for HttpClient

HttpClient, with Managed session configured in the project settings, uses similar CPU than the WebClient, but performs (speed and CPU) much better with NSUrlSession configured, so my guess a WebClient / HttpWebRequest using native NSUrlSession will perform decently.

baulig commented 5 years ago

I just tried with a 4096000 byte buffer and the numbers look very much like on DotNet:

$ time curl -o /dev/null http://cdimage.ubuntu.com/releases/18.04.2/release/ubuntu-18.04.2-server-amd64.iso
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100  883M  100  883M    0     0  19.8M      0  0:00:44  0:00:44 --:--:-- 20.4M

real    0m44.433s
user    0m0.829s
sys 0m2.579s

With Mono 6.4.0.94:

$ time mono Program.exe 

real    0m45.487s
user    0m9.472s
sys 0m6.885s

With dotnet 3.0.100-preview7-012650:

$ time dotnet run

real    0m47.339s
user    0m10.888s
sys 0m4.127s

Increasing buffer size to 40960000:

$ time mono Program.exe 

real    0m46.130s
user    0m9.261s
sys 0m6.674s
baulig commented 5 years ago

Some profiling data:


Mono log profiler data
    Profiler version: 3.0
    Data version: 17
    Arguments: log:calls,alloc,sample,maxframes=20,calldepth=100,heapshot,sample=cycles/10000
    Architecture: x86-64
    Operating system: osx
    Mean timer overhead: 20 nanoseconds
    Program startup: Tue Jul  9 17:41:15 2019
    Program ID: 5828
    Server listening on: 56017

JIT summary
    Compiled methods: 2553
    Generated code size: 966003
    JIT helpers: 0
    JIT helpers code size: 0

GC summary
    GC resizes: 49
    Max heap size: 68849664
    Object moves: 275490
    Gen0 collections: 47, max time: 2401us, total time: 62663us, average: 1333us
    Gen1 collections: 5, max time: 254218814881us, total time: 254255951796us, average: 50851190359us

Statistical samples summary
    Sample type: cycles
    Unmanaged hits:  3820612 (99.8%)
    Managed hits:      6746 ( 0.2%)
    Unresolved hits:   2587 ( 0.1%)
      Hits      % Method name
    1801449  47.07 semaphore_wait_signal_trap
    1075031  28.09 __psynch_cvwait
    461000  12.04 semaphore_wait_trap
    260467   6.81 __select
     26443   0.69 buffer_lock
     18504   0.48 System_Threading_Thread_SpinWait_int
     13232   0.35 mono_conc_hashtable_lookup
     10409   0.27 method_enter
      8103   0.21 mach_absolute_time
      7850   0.21 emit_event
      7144   0.19 mono_get_hazardous_pointer
      6849   0.18 method_leave
      5722   0.15 check_thread_state
      5659   0.15 init_thread
      5523   0.14 method_leave
      5409   0.14 emit_method_inner
      4393   0.11 _platform_memmove$VARIANT$Haswell
      4168   0.11 mono_thread_info_get_tools_data
      3936   0.10 mono_threads_transition_do_blocking

Allocation summary
     Bytes      Count  Average Type name
  41046752        165   248768 System.Byte[]
  39138560     305770      128 System.Action
  39094968     707126       55 unresolved class 0x0
  18589440     232368       80 System.Threading.Tasks.Task<System.Int32>
   8673840      77445      112 System.Net.WebReadStream.<ReadAsync>d__28
   5577768      77469       72 System.Threading.Tasks.Task.ContingentProperties
   5034720      37020      136 System.Net.WebResponseStream.<ReadAsync>d__40
   4957696      38732      128 System.Threading.SparselyPopulatedArray<System.Threading.CancellationCallbackInfo>[]
   4957440      77460       64 System.Threading.CancellationTokenSource
   4957184      38728      128 System.Func<System.Boolean>
   4957056      38727      128 System.Func<System.Threading.CancellationToken,System.Threading.Tasks.Task<System.Int32>>
   4647600      38730      120 System.Threading.Tasks.Task.DelayPromise
   4027400      38725      104 System.Net.FixedSizeReadStream.<ProcessReadAsync>d__5
   4027400      38725      104 System.Net.BufferedReadStream.<ProcessReadAsync>d__2
   3896776      37469      104 System.Net.HttpWebRequest.<RunWithTimeoutWorker>d__244<System.Int32>
   3896472     162353       24 System.Boolean
   3718400      77466       48 System.Threading.Tasks.Task[]
   3613920      37645       96 System.Net.ServicePointScheduler.<WaitAsync>d__46
   3408416      38732       88 System.Threading.Tasks.TaskFactory.CompleteOnInvokePromise
   3098240      38728       80 System.Threading.Tasks.Task<System.Net.WebCompletionSource.Result<System.Object>>
   3012240      37653       80 System.Threading.Tasks.Task<System.Boolean>
   2788560      38730       72 System.Threading.Timer
   2478848      38732       64 System.Threading.CancellationCallbackInfo[]
   1859136      38732       48 System.Threading.SparselyPopulatedArrayFragment<System.Threading.CancellationCallbackInfo>
   1859136      38732       48 System.Threading.CancellationCallbackInfo
   1549080      38727       40 System.Net.WebResponseStream.<>c__DisplayClass41_0
   1331120      33278       40 System.Threading.Tasks.Task.SetOnInvokeMres
   1239424      38732       32 System.Threading.SparselyPopulatedArray<System.Threading.CancellationCallbackInfo>
   1239296      38728       32 System.MonoListItem
   1239296      38728       32 System.Net.WebCompletionSource
   1040640          8   130080 System.Threading.Timer[]
    929472      38728       24 System.Threading.Tasks.TaskCompletionSource<System.Net.WebCompletionSource.Result<System.Object>>
    532224      33264       16 System.Object
     81416        284      286 System.Char[]
     73248       3052       24 System.Int32
     61312       1916       32 System.Collections.Generic.LowLevelListWithIList<System.Object>
     42976        146      294 System.Collections.Hashtable.bucket[]
     32664        310      105 System.Object[]
     13544        226       59 System.Int32[]
     12600        315       40 System.Threading.ThreadPoolWorkQueue.QueueSegment
     11600        312       37 System.Attribute[]
     10112        316       32 System.Collections.DictionaryEntry
      9472         16      592 System.Xml.XmlTextWriter.TagInfo[]
      7600         95       80 System.Collections.Hashtable
      6800         85       80 System.Configuration.SectionInfo
      6576        137       48 System.Text.StringBuilder
      6512          1     6512 System.Globalization.InternalEncodingDataItem[]
      6160         14      440 System.Collections.Generic.Dictionary.Entry<System.Type,System.MonoCustomAttrs.AttributeInfo>[]
      5888        184       32 System.Collections.Specialized.NameObjectCollectionBase.NameObjectEntry
      5728         86       66 System.String[]
      5440        136       40 System.Collections.Generic.List<System.Object>
      5376         56       96 System.Reflection.RuntimePropertyInfo
      5352        167       32 System.Reflection.RuntimeParameterInfo[]
      5040        105       48 Mono.Globalization.Unicode.Contraction
      4608         64       72 System.Net.NetworkInformation.MacOsStructs.ifaddrs
      4608         72       64 System.Configuration.PropertyInformation
      4424         19      232 Mono.Globalization.Unicode.Contraction[]
      4320        108       40 System.Xml.NameTable.Entry
      4320        108       40 System.Collections.ArrayList
      3760         94       40 System.ComponentModel.TypeDescriptor.TypeDescriptionNode.DefaultTypeDescriptor
      3584         16      224 System.Xml.XmlTextWriter.Namespace[]
      3400         25      136 System.Xml.XmlTextReaderImpl.NodeData
      3360         84       40 System.Reflection.RuntimeMethodInfo
      3328          8      416 System.Collections.Generic.Dictionary.Entry<System.String,System.Net.NetworkInformation.MacOsNetworkInterface>[]
      3200         80       40 System.Reflection.RuntimeConstructorInfo[]
      2960         37       80 System.Configuration.ConfigurationProperty
      2880         40       72 System.Net.NetworkInformation.MacOsNetworkInterface
      2800         35       80 System.ComponentModel.ReflectTypeDescriptionProvider.ReflectedTypeData
      2560         32       80 System.Configuration.PropertyInformationCollection
      2560         16      160 System.Xml.XmlTextWriter
      2440         64       38 System.Type[]
      2240         35       64 System.Collections.Specialized.OrderedDictionary
      2200         55       40 System.Reflection.ConstructorInfo[]
      2176          4      544 System.Xml.NameTable.Entry[]
      2128         19      112 System.ComponentModel.AttributeCollection.AttributeEntry[]
      2120         53       40 System.Net.HeaderInfo
      2072         52       39 System.Reflection.MethodBase[]
      1872         39       48 System.Collections.ArrayList.ArrayListEnumeratorSimple
      1664         52       32 System.Configuration.ConfigurationPropertyAttribute[]
      1600          1     1600 System.Globalization.InternalCodePageDataItem[]
      1600         40       40 System.Collections.Generic.List<System.Net.IPAddress>
      1536         64       24 System.Net.NetworkInformation.MacOsStructs.sockaddr
      1456          2      728 System.Collections.Generic.Dictionary.Entry<System.String,System.UriParser>[]
      1440         36       40 System.ComponentModel.AttributeCollection
      1408         11      128 System.AsyncCallback
      1376         26       52 System.Reflection.RuntimePropertyInfo[]
      1360         17       80 System.Configuration.ConfigInfoCollection
      1344         42       32 System.ComponentModel.TypeDescriptionProviderAttribute[]
      1320         33       40 System.Collections.Generic.List.Enumerator<System.Configuration.ConfigurationProperty>
      1320         33       40 System.Net.IPAddress
      1280         32       40 System.Configuration.ElementInformation
      1248         18       69 System.Configuration.ConfigurationProperty[]
      1152          9      128 System.IOAsyncCallback
      1152          2      576 System.Xml.XmlTextReaderImpl
      1152         24       48 System.UInt16[]
      1120         14       80 System.Collections.Generic.Dictionary<System.Type,System.MonoCustomAttrs.AttributeInfo>
      1120         35       32 System.Collections.Specialized.OrderedDictionary.OrderedDictionaryKeyValueCollection
      1080         27       40 System.Reflection.RuntimeConstructorInfo
      1056         33       32 Mono.Globalization.Unicode.TailoringInfo
      1056         12       88 System.Configuration.SectionGroupInfo
      1040          5      208 System.Globalization.CultureInfo
      1024         16       64 System.IO.StringWriter
      1008         16       63 System.Net.IPAddress[]
       960          8      120 System.Net.Configuration.WebRequestModuleElement
       896          2      448 System.Xml.XmlTextWriter.State[]
       856          5      171 System.IntPtr[]
       848          5      169 System.UInt64[]
       832         26       32 System.MonoTypeInfo
       816          7      116 Mono.Globalization.Unicode.CodePointIndexer.TableRange[]
       800          4      200 System.AppDomainSetup
       800         25       32 System.Reflection.ParameterInfo[]
       768          6      128 System.Action<System.Object>
       768         24       32 System.Collections.Specialized.NameObjectCollectionBase.NameObjectKeysEnumerator
       768         16       48 System.Xml.XmlTextEncoder
       768         14       54 System.RuntimeType[]
       720         18       40 System.Net.NetworkInformation.MacOsStructs.sockaddr_in6
       704          8       88 System.Configuration.SectionInformation
       680         17       40 System.Int32[][]
       680         17       40 System.Collections.Generic.List<System.Reflection.MethodBase>
       680          5      136 Mono.Globalization.Unicode.SortKeyBuffer
       648          3      216 System.Globalization.NumberFormatInfo
       640         16       40 System.UriParser.BuiltInUriParser
       640          4      160 System.Xml.XmlTextReaderImpl.NodeData[]
       616         11       56 System.Collections.Hashtable.HashtableEnumerator
       600         15       40 System.Collections.Generic.List<System.Configuration.ConfigurationProperty>
       592         37       16 System.Configuration.DefaultValidator
       576         18       32 System.Configuration.PropertyInformationCollection.PropertyInformationEnumerator
       576         24       24 System.Configuration.ConfigurationAllowDefinition
       544          4      136 System.Globalization.CultureData
       512          4      128 System.Threading.ContextCallback
       504          9       56 System.Configuration.ConfigurationCollectionAttribute
       480          2      240 System.Runtime.CompilerServices.Ephemeron[]
       480          2      240 System.Reflection.PropertyInfo[]
       448          2      224 System.Xml.XmlNamespaceManager.NamespaceDeclaration[]
       448          1      448 System.Net.HeaderInfo[]
       384          3      128 System.Reflection.MemberFilter
       384          2      192 System.Net.NetworkInformation.NetworkInterface[]
       384          3      128 System.Comparison<Mono.Globalization.Unicode.Contraction>
       368          2      184 System.Net.Configuration.WebRequestModuleElementCollection
       368          2      184 System.Net.Configuration.ConnectionManagementElementCollection
       368          1      368 System.Net.HttpWebRequest
       360         15       24 System.Configuration.ConfigurationPropertyCollection
       336          6       56 System.Runtime.Serialization.SafeSerializationManager
       320          4       80 System.Guid[]
       304          2      152 System.Net.Configuration.WebRequestModulesSection
       304          2      152 System.Net.Configuration.ConnectionManagementSection
       304          2      152 System.Net.Configuration.DefaultProxySection
       304          2      152 System.Net.Configuration.SettingsSection
       296          1      296 Mono.Globalization.Unicode.TailoringInfo[]
       288          3       96 Mono.Globalization.Unicode.SimpleCollator
       280          1      280 System.Collections.Concurrent.ConcurrentDictionary.Node<System.Net.ServicePointManager.SPKey,System.Net.ServicePoint>[]
       280          7       40 Mono.Globalization.Unicode.CodePointIndexer
       264          3       88 System.Collections.Hashtable.SyncHashtable
       256          2      128 System.Net.HeaderParser
       256          2      128 System.Threading.ThreadStart
       256          2      128 System.Threading.TimerCallback
       256          2      128 System.Func<System.Object,System.Boolean>
       256         16       16 System.SerializableAttribute
       240          3       80 System.Threading.Tasks.Task<System.Net.HttpWebResponse>
       240          2      120 System.Net.Configuration.HttpWebRequestElement
       240          2      120 System.Configuration.Configuration
       240          2      120 System.Net.Configuration.Ipv6Element
       240          2      120 System.Net.Configuration.PerformanceCountersElement
       240          2      120 System.Net.Configuration.ServicePointManagerElement
       240          6       40 System.Configuration.ConfigurationCollectionAttribute[]
       240          2      120 System.Net.WebHeaderCollection
       240          2      120 System.Net.Configuration.SocketElement
       240          3       80 System.Threading.Tasks.Task<System.Net.WebRequestStream>
       240          2      120 System.Net.Configuration.WebProxyScriptElement
       224          2      112 System.IO.FileStream
       224          4       56 System.Text.UnicodeEncoding
       216          1      216 System.Globalization.CalendarData[]
       216          3       72 System.Uri
       216          3       72 System.Uri.UriInfo
       216          3       72 System.Globalization.TextInfo
       208          2      104 System.Threading.Tasks.Task<System.ValueTuple<System.Net.HttpWebResponse,System.Boolean,System.Boolean,System.Net.BufferOffsetSize,System.Net.WebOperation>>
       208          2      104 System.Collections.Generic.Dictionary.Entry<System.Type,System.AttributeUsageAttribute>[]
       200          5       40 System.Globalization.SortKey
       200          5       40 System.Threading.ThreadPoolWorkQueue.WorkStealingQueue
       192          6       32 System.Random
       192          2       96 System.Collections.Specialized.NameValueCollection
       192          2       96 System.Reflection.RuntimeAssembly
       192          6       32 System.MonoCustomAttrs.AttributeInfo
       184          5       36 System.Runtime.ExceptionServices.ExceptionDispatchInfo[]
       176          1      176 System.Net.HttpWebRequest.<MyGetResponseAsync>d__246
       176          1      176 System.Net.WebResponseStream
       168          1      168 System.Buffers.TlsOverPerCoreLockedStacksArrayPool.PerCoreLockedStacks<System.Int32>[]
       168          7       24 System.Text.DecoderReplacementFallback
       168          1      168 System.Collections.Generic.LowLevelDictionary.Entry<System.Int32,System.Threading.Tasks.Task>[]
       168          7       24 System.Text.EncoderReplacementFallback
       168          1      168 System.Byte[][]
       168          3       56 System.Globalization.CompareInfo
       168          1      168 System.Buffers.TlsOverPerCoreLockedStacksArrayPool.PerCoreLockedStacks<System.Byte>[]
       160          1      160 System.AppDomain
       160          4       40 System.AttributeUsageAttribute[]
       160          2       80 System.Threading.Tasks.Task<System.Net.WebCompletionSource.Result<System.Net.WebRequestStream>>
       160          1      160 System.Threading.ThreadPoolWorkQueue.WorkStealingQueue[]
       160          1      160 System.Net.WebHeaderCollection.RfcChar[]
       160          5       32 System.Version
       160          2       80 System.Threading.Tasks.Task<System.Tuple<System.Int32,System.Int32,System.Int32,System.Boolean>>
       160          1      160 System.Globalization.CalendarData
       160          1      160 System.Net.WebRequestStream
       160          2       80 System.Threading.Tasks.Task<System.Net.WebResponseStream>
       160          4       40 System.Net.WebRequestPrefixElement
       160          2       80 System.Collections.Generic.Dictionary<System.String,System.Net.NetworkInformation.MacOsNetworkInterface>
       160          2       80 System.Collections.Generic.Dictionary<System.Type,System.AttributeUsageAttribute>
       160          2       80 System.Collections.Generic.Dictionary<System.String,System.UriParser>
       144          6       24 System.Net.NetworkInformation.MacOsStructs.sockaddr_in
       144          1      144 System.OutOfMemoryException
       144          6       24 System.AttributeUsageAttribute
       144          3       48 System.Runtime.CompilerServices.ConditionalWeakTable.Enumerator<System.Byte[][],System.Object>
       144          2       72 System.Diagnostics.StackFrame
       144          1      144 System.Net.WebOperation
       144          2       72 System.Xml.XmlNamespaceManager
       144          1      144 System.NullReferenceException
       144          1      144 System.StackOverflowException
       136          1      136 System.Net.ServicePoint
       128          1      128 System.Func<System.Threading.Tasks.Task.ContingentProperties>
       128          1      128 System.Net.HttpWebResponse
       128          1      128 System.Func<System.Net.EndPoint,System.AsyncCallback,System.Object,System.IAsyncResult>
       128          1      128 System.Func<System.AsyncCallback,System.Object,System.IAsyncResult>
       128          1      128 System.Func<System.Threading.Tasks.Task<System.Net.WebResponse>>
       128          1      128 System.Func<System.Threading.Tasks.Task>
       128          2       64 System.Threading.SemaphoreSlim
       128          2       64 System.Uri.MoreInfo
       128          1      128 System.Func<System.IO.Stream,System.IAsyncResult,System.Int32>
       128          1      128 System.EventHandler
       128          1      128 System.Predicate<System.Object>
       128          1      128 System.Comparison<Mono.Globalization.Unicode.Level2Map>
       128          1      128 System.Func<System.IAsyncResult,System.Net.WebResponse>
       128          1      128 System.Func<System.Threading.CancellationToken,System.Threading.Tasks.Task<System.Net.HttpWebResponse>>
       128          1      128 System.Predicate<System.Threading.Tasks.Task>
       128          1      128 System.Func<System.IO.Stream,System.IAsyncResult,System.Threading.Tasks.VoidTaskResult>
       128          1      128 System.Threading.WaitCallback
       128          8       16 System.ComponentModel.TypeConverter
       128          1      128 System.Action<System.IAsyncResult>
       128          1      128 System.Threading.ParameterizedThreadStart
       120          3       40 System.Net.IPAddress.ReadOnlyIPAddress
       120          5       24 System.Reflection.DefaultMemberAttribute
       120          3       40 System.Collections.Generic.List<Mono.Globalization.Unicode.Contraction>
       120          1      120 System.Net.Configuration.ProxyElement
       120          3       40 System.Collections.Generic.List<Mono.Globalization.Unicode.Level2Map>
       112          1      112 System.Threading.Tasks.Task<System.Int32>[]
       112          1      112 System.DefaultBinder.Primitives[]
       112          1      112 System.Net.WebOperation.<Run>d__58
       112          1      112 System.Net.WebConnection.<Connect>d__16
       112          2       56 System.Text.UTF8Encoding
       112          1      112 System.Net.WebConnection.<InitConnection>d__19
       112          1      112 System.Net.ServicePointScheduler.<RunScheduler>d__32
       104          1      104 System.Net.ServicePointScheduler
       104          1      104 System.Collections.Generic.Dictionary.Entry<System.String,System.Globalization.CultureInfo>[]
       104          1      104 System.Collections.Generic.Dictionary.Entry<System.String,System.Globalization.ISimpleCollator>[]
       104          1      104 System.Net.HttpWebRequest.<RunWithTimeoutWorker>d__244<System.Net.HttpWebResponse>
       104          1      104 System.Collections.Generic.Dictionary.Entry<System.Int32,System.Globalization.CultureInfo>[]
        96          2       48 System.Threading.ManualResetEvent
        96          2       48 System.Threading.Tasks.TaskExceptionHolder
        96          2       48 System.WeakReference[]
        96          1       96 System.Net.WebConnection
        96          1       96 System.Boolean[]
        96          3       32 System.ComponentModel.EnumConverter
        96          2       48 System.Threading.Thread[]
        96          1       96 System.ComponentModel.WeakHashtable
        96          1       96 System.Net.WebResponseStream.<InitReadAsync>d__51
        96          3       32 System.Net.IPEndPoint
        96          2       48 System.Collections.Generic.LinkedList<System.WeakReference>
        96          3       32 System.Enum.ValuesAndNames
        96          1       96 System.Threading.Tasks.TaskFactory.FromAsyncTrimPromise<System.Threading.Tasks.VoidTaskResult,System.IO.Stream>
        96          2       48 System.Xml.XmlTextReaderImpl.XmlContext
        96          2       48 System.ComponentModel.TypeDescriptor.TypeDescriptionNode
        96          3       32 Microsoft.Win32.SafeHandles.SafeWaitHandle
        96          1       96 System.Configuration.ConfigurationSectionGroupCollection
        96          1       96 System.Configuration.ConfigurationSectionCollection
        88          1       88 System.Threading.CancellationTokenSource.Linked1CancellationTokenSource
        88          1       88 System.Net.Sockets.Socket
        88          1       88 System.Threading.Tasks.UnwrapPromise<System.Threading.Tasks.VoidTaskResult>
        88          1       88 System.Runtime.Remoting.Contexts.Context
        88          1       88 System.Net.WebRequestStream.<Initialize>d__36
        88          1       88 System.Net.WebRequestStream.<SetHeadersAsync>d__37
        88          1       88 System.Threading.Tasks.UnwrapPromise<System.Net.WebResponse>
        80          2       40 System.ComponentModel.ReflectTypeDescriptionProvider
        80          1       80 System.Int16[]
        80          1       80 System.Threading.Tasks.Task<System.Net.WebCompletionSource.Result<System.Net.WebResponseStream>>
        80          1       80 System.Net.FixedSizeReadStream
        80          2       40 System.Collections.Generic.List<System.WeakReference>
        80          1       80 System.Collections.Generic.Dictionary<System.String,System.LocalDataStoreSlot>
        80          1       80 System.Collections.Generic.Dictionary<System.String,System.Globalization.ISimpleCollator>
        80          1       80 System.Collections.Generic.Dictionary<System.String,System.Globalization.CultureInfo>
        80          1       80 System.Threading.Tasks.Task<System.Threading.Tasks.Task>
        80          2       40 System.ValueTuple<System.Net.ServicePointScheduler.ConnectionGroup,System.Net.WebOperation>[]
        80          2       40 System.Xml.NameTable
        80          1       80 System.Collections.Generic.Dictionary<System.Int32,System.Globalization.CultureInfo>
        80          1       80 System.Threading.Tasks.Task<System.Net.WebCompletionSource.Result<System.ValueTuple<System.Boolean,System.Net.WebOperation>>>
        80          2       40 System.Collections.Generic.List.Enumerator<System.Threading.Tasks.Task>
        80          1       80 System.Collections.Generic.Dictionary<System.Int32,System.Threading.Tasks.Task>
        80          2       40 System.Collections.Generic.List<System.Threading.Tasks.Task>
        80          1       80 System.Diagnostics.BooleanSwitch
        80          1       80 System.Threading.Tasks.Task<System.Threading.Tasks.Task<System.Net.WebResponse>>
        72          1       72 System.Net.TimerThread.TimerNode
        72          1       72 System.Net.Sockets.NetworkStream
        72          1       72 System.Threading.Tasks.Task
        72          1       72 System.Net.BufferedReadStream
        72          1       72 System.Net.WebCompletionSource.<WaitForCompletion>d__15<System.Net.WebRequestStream>
        72          1       72 System.Configuration.ConfigurationSectionGroup
        72          1       72 System.Net.WebCompletionSource.<WaitForCompletion>d__15<System.Net.WebResponseStream>
        72          1       72 System.Net.Configuration.NetSectionGroup
        72          1       72 System.Reflection.RuntimeParameterInfo
        72          3       24 System.Threading.Tasks.StackGuard
        64          2       32 System.Collections.Generic.LowLevelListWithIList<System.Threading.Tasks.Task>
        64          2       32 ConfigXmlTextReader
        64          2       32 System.CultureAwareComparer
        64          1       64 System.Reflection.RuntimeModule
        64          2       32 System.ValueTuple<System.Net.ServicePointScheduler.ConnectionGroup,System.Net.WebConnection,System.Threading.Tasks.Task>[]
        64          2       32 System.Net.WebCompletionSource<System.Net.WebRequestStream>
        64          2       32 Microsoft.Win32.SafeHandles.SafeFileHandle
        64          2       32 System.Tuple<System.Int32,System.Int32,System.Int32,System.Boolean>
        64          2       32 System.Configuration.ElementMap
        64          2       32 System.Collections.Generic.LowLevelListWithIList<System.Runtime.ExceptionServices.ExceptionDispatchInfo>
        56          1       56 System.Diagnostics.DebuggerDisplayAttribute
        56          1       56 System.Globalization.CodePageDataItem
        56          1       56 System.Reflection.RuntimeFieldInfo
        56          1       56 System.Text.UTF8Encoding.UTF8Decoder
        56          1       56 System.Collections.Generic.LinkedListNode<System.ValueTuple<System.Net.ServicePointScheduler.ConnectionGroup,System.Net.WebOperation>>
        56          1       56 System.Collections.Concurrent.ConcurrentDictionary<System.Net.ServicePointManager.SPKey,System.Net.ServicePoint>
        56          1       56 System.LocalDataStoreMgr
        56          1       56 System.Net.ServicePointScheduler.ConnectionGroup
        56          1       56 System.Text.UTF8Encoding.UTF8EncodingSealed
        56          1       56 System.Net.Sockets.SafeSocketHandle
        48          1       48 System.Collections.Generic.LinkedListNode<System.Net.WebConnection>
        48          1       48 System.Configuration.ExeConfigurationFileMap
        48          2       24 System.Collections.Generic.Dictionary.ValueCollection<System.String,System.Net.NetworkInformation.MacOsNetworkInterface>
        48          1       48 System.Collections.Generic.LinkedList<System.Net.WebOperation>
        48          1       48 System.Diagnostics.StackFrame[]
        48          1       48 System.Threading.Timer.Scheduler
        48          3       16 System.ComponentModel.CollectionConverter
        48          1       48 System.OperatingSystem
        48          1       48 System.Net.WebCompletionSource.Result<System.ValueTuple<System.Boolean,System.Net.WebOperation>>
        48          2       24 System.Threading.Tasks.TaskCompletionSource<System.Net.WebCompletionSource.Result<System.Net.WebRequestStream>>
        48          2       24 System.WeakReference
        48          1       48 System.Collections.Concurrent.ConcurrentDictionary.Node<System.Net.ServicePointManager.SPKey,System.Net.ServicePoint>
        48          1       48 System.Collections.Generic.LinkedListNode<System.WeakReference>
        48          1       48 System.Configuration.InternalConfigurationRoot
        48          3       16 System.Runtime.CompilerServices.IsReadOnlyAttribute
        48          1       48 System.Threading.WaitHandle[]
        48          1       48 System.Collections.Generic.LinkedList<System.Net.WebConnection>
        48          2       24 System.ComponentModel.TypeConverterAttribute
        48          1       48 System.Collections.Generic.LinkedList<System.ValueTuple<System.Net.ServicePointScheduler.ConnectionGroup,System.Net.WebOperation>>
        48          1       48 System.IO.TextWriter.NullTextWriter
        48          1       48 System.Net.Configuration.SettingsSectionInternal
        48          2       24 Mono.CFDictionary
        48          1       48 System.Collections.Generic.LinkedList<System.ValueTuple<System.Net.ServicePointScheduler.ConnectionGroup,System.Net.WebConnection,System.Threading.Tasks.Task>>
        48          1       48 System.Threading.AutoResetEvent
        48          2       24 System.Runtime.InteropServices.ComVisibleAttribute
        48          1       48 System.Net.IPHostEntry
        48          1       48 System.Collections.Generic.LinkedListNode<System.Net.WebOperation>
        40          1       40 System.Threading.Tasks.TaskFactory
        40          1       40 System.Net.SocketAddress
        40          1       40 System.Collections.Generic.List`1
        40          1       40 System.Collections.Generic.LowLevelDictionary<System.Int32,System.Threading.Tasks.Task>
        40          1       40 System.Collections.Generic.List<System.Threading.Timer>
        40          1       40 System.Threading.ThreadPoolWorkQueue
        40          1       40 System.Threading.ThreadHelper
        40          1       40 System.Buffers.TlsOverPerCoreLockedStacksArrayPool<System.Int32>
        40          1       40 System.Reflection.RuntimeFieldInfo[]
        40          1       40 System.Net.ServicePointManager.SPKey
        40          1       40 System.Threading.Tasks.TaskFactory.<>c__DisplayClass35_0<System.Net.WebResponse>
        40          1       40 System.Diagnostics.StackTrace[]
        40          1       40 System.Net.WebCompletionSource.Result<System.Net.WebRequestStream>
        40          1       40 System.Runtime.CompilerServices.ConditionalWeakTable<System.Byte[][],System.Object>
        40          1       40 System.Buffers.TlsOverPerCoreLockedStacksArrayPool<System.Byte>
        40          1       40 System.Net.WebCompletionSource.Result<System.Net.WebResponseStream>
        40          1       40 System.Configuration.InternalConfigurationSystem
        40          1       40 System.IO.Stream.NullStream
        40          1       40 System.Runtime.CompilerServices.ConditionalWeakTable<System.Int32[][],System.Object>
        40          1       40 System.Diagnostics.StackTrace
        40          1       40 System.Threading.Tasks.TaskFactory.<>c__DisplayClass38_0<System.Threading.Tasks.VoidTaskResult,System.Net.EndPoint>
        40          1       40 System.Threading.Tasks.TaskFactory<System.Net.WebResponse>
        40          1       40 System.Collections.Concurrent.ConcurrentDictionary.Tables<System.Net.ServicePointManager.SPKey,System.Net.ServicePoint>
        40          1       40 Mono.Net.CFProxy[]
        40          1       40 System.Net.TimerThread.TimerQueue
        40          1       40 System.Collections.Generic.List<System.LocalDataStore>
        40          1       40 System.IO.StringReader
        40          1       40 System.Collections.Generic.List<System.Threading.Thread>
        32          1       32 System.Gen2GcCallback
        32          1       32 System.Collections.CompatibleComparer
        32          1       32 System.Configuration.ExeConfigurationHost
        32          1       32 Mono.CFString
        32          1       32 System.Threading.Tasks.CompletionActionInvoker
        32          1       32 System.Collections.ObjectModel.ReadOnlyCollection<System.Runtime.ExceptionServices.ExceptionDispatchInfo>
        32          1       32 System.Runtime.ExceptionServices.ExceptionDispatchInfo
        32          1       32 Mono.Globalization.Unicode.Level2Map[]
        32          1       32 System.Threading.Tasks.TaskToApm.<>c__DisplayClass3_0
        32          1       32 System.Xml.SafeAsciiDecoder
        32          1       32 System.Net.WebCompletionSource<System.Net.WebResponseStream>
        32          1       32 Mono.Net.CFNetwork.CFWebProxy
        32          1       32 System.Net.WebCompletionSource<System.ValueTuple<System.Boolean,System.Net.WebOperation>>
        32          1       32 System.Buffers.ArrayPoolEventSource
        32          1       32 System.Exception[]
        32          1       32 System.LocalDataStore[]
        32          1       32 System.Net.BufferOffsetSize
        24          1       24 System.Net.Sockets.Socket.<>c__DisplayClass252_0
        24          1       24 System.TimeSpan
        24          1       24 System.Configuration.DefaultConfig
        24          1       24 System.Net.ServicePointScheduler.AsyncManualResetEvent
        24          1       24 System.Configuration.ConfigurationAllowExeDefinition
        24          1       24 System.Collections.CaseInsensitiveHashCodeProvider
        24          1       24 System.Threading.Lock
        24          1       24 System.Net.NetworkInformation.MacOsNetworkInterfaceAPI
        24          1       24 System.Net.Configuration.ConnectionManagementData
        24          1       24 System.Net.Configuration.ProxyElement.BypassOnLocalValues
        24          1       24 System.Configuration.ConfigurationLocationCollection
        24          1       24 System.Threading.Tasks.TaskCompletionSource<System.Net.WebCompletionSource.Result<System.Net.WebResponseStream>>
        24          1       24 Mono.Net.CFUrl
        24          1       24 System.Net.Configuration.ProxyElement.UseSystemDefaultValues
        24          1       24 Mono.CFArray
        24          1       24 System.Net.Configuration.DefaultProxySectionInternal
        24          1       24 System.Net.Configuration.ProxyElement.AutoDetectValues
        24          1       24 System.OrdinalIgnoreCaseComparer
        24          1       24 Mono.Net.CFProxy
        24          1       24 System.Threading.Timer.TimerComparer
        24          1       24 System.Threading.Tasks.TaskCompletionSource<System.Net.WebCompletionSource.Result<System.ValueTuple<System.Boolean,System.Net.WebOperation>>>
        24          1       24 System.Net.Cache.RequestCachePolicy
        24          1       24 System.Collections.CaseInsensitiveComparer
        24          1       24 System.Configuration.ConfigurationUserLevel
        24          1       24 System.IO.TextReader.NullTextReader
        24          1       24 Mono.Net.CFProxySettings
        24          1       24 System.OrdinalCaseSensitiveComparer
        24          1       24 System.Configuration.ClientConfigurationSystem
        24          1       24 System.CLSCompliantAttribute
        24          1       24 System.Threading.ThreadPoolWorkQueue.SparseArray<System.Threading.ThreadPoolWorkQueue.WorkStealingQueue>
        24          1       24 System.Threading.Tasks.ThreadPoolTaskScheduler
        16          1       16 System.Threading.Tasks.Task.<>c
        16          1       16 System.ComponentModel.WeakHashtable.WeakKeyComparer
        16          1       16 System.Collections.Generic.ObjectEqualityComparer<System.Net.ServicePointManager.SPKey>
        16          1       16 System.Collections.Generic.GenericComparer<System.UInt64>
        16          1       16 System.Net.HttpWebRequest.<>c__244<System.Int32>
        16          1       16 System.ComponentModel.Int32Converter
        16          1       16 System.Threading.CancellationTokenSource.LinkedNCancellationTokenSource.<>c
        16          1       16 System.Collections.Generic.ObjectEqualityComparer<System.Threading.Thread>
        16          1       16 System.Net.Sockets.SocketTaskExtensions.<>c
        16          1       16 System.Collections.Generic.ArraySortHelper<System.UInt64,System.String>
        16          1       16 System.Text.DecoderExceptionFallback
        16          1       16 System.Collections.Generic.ObjectEqualityComparer<System.Type>
        16          1       16 System.Net.Sockets.Socket.<>c
        16          1       16 System.Reflection.Missing
        16          1       16 System.Collections.Generic.GenericEqualityComparer<System.String>
        16          1       16 System.Collections.Generic.ArraySortHelper<Mono.Globalization.Unicode.Contraction>
        16          1       16 System.DBNull
        16          1       16 System.Net.Sockets.SocketAsyncResult.<>c
        16          1       16 System.Threading.Tasks.ThreadPoolTaskScheduler.<>c
        16          1       16 System.Net.HeaderInfoTable
        16          1       16 System.Collections.Generic.LowLevelDictionary.DefaultComparer<System.Int32,System.Threading.Tasks.Task,System.Int32>
        16          1       16 System.Threading.CancellationToken.<>c
        16          1       16 System.Net.ServicePointScheduler.AsyncManualResetEvent.<>c
        16          1       16 System.Net.CaseInsensitiveAscii
        16          1       16 System.IO.Stream.<>c
        16          1       16 Mono.Globalization.Unicode.MSCompatUnicodeTable.<>c
        16          1       16 System.ComponentModel.BooleanConverter
        16          1       16 System.DefaultBinder
        16          1       16 System.Net.HttpRequestCreator
        16          1       16 System.ComponentModel.TimeSpanConverter
        16          1       16 System.Collections.Generic.ObjectEqualityComparer<System.Net.WebOperation>
        16          1       16 System.ComponentModel.StringConverter
        16          1       16 System.UriTypeConverter
        16          1       16 System.Collections.Generic.ArraySortHelper<System.UInt64>
        16          1       16 System.Configuration.InternalConfigurationFactory
        16          1       16 System.Collections.Generic.GenericEqualityComparer<System.Int32>
        16          1       16 System.Text.EncoderExceptionFallback
        16          1       16 Mono.Globalization.Unicode.ContractionComparer
        16          1       16 System.Net.WebRequest.DesignerWebRequestCreate
Total memory allocated: 232994008 bytes in 2602987 objects

Method call summary
Total(ms) Self(ms)      Calls Method name
   47039        0          1 (wrapper runtime-invoke) object:runtime_invoke_void (object,intptr,intptr,intptr)
   47039       29          1 X:Main ()
   46797        0          7 (wrapper runtime-invoke) object:runtime_invoke_void__this__ (object,intptr,intptr,intptr)
   46796    46796          1 (wrapper managed-to-native) System.Threading.WaitHandle:Wait_internal (intptr*,int,bool,int)
   46524      130      38727 System.Net.WebConnectionStream:Read (byte[],int,int)
   35479       60      77454 System.Threading.Tasks.Task`1<int>:get_Result ()
   35419     2477      36969 System.Threading.Tasks.Task`1<int>:GetResultCore (bool)
   32402    32402      33174 (wrapper managed-to-native) System.Threading.Monitor:Monitor_wait (object,int)
   12770      446     154898 System.Net.WebReadStream/<ReadAsync>d__28:MoveNext ()
   12229      630     268110 System.Threading.Tasks.Task`1<int>:TrySetResult (int)
   11104      259      75747 System.Net.WebResponseStream/<ReadAsync>d__40:MoveNext ()
   10622       71      38727 System.Net.WebResponseStream:ReadAsync (byte[],int,int,System.Threading.CancellationToken)
   10516       92      38727 System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1<int>:Start<System.Net.WebResponseStream/<ReadAsync>d__40> (System.Net.WebResponseStream/<ReadAsync>d__40&)
    9691      223     232360 System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1<int>:SetResult (int)
    9130      127      38727 System.Net.WebResponseStream:ProcessRead (byte[],int,int,System.Threading.CancellationToken)
    8867      120      77453 System.Net.WebReadStream:ReadAsync (byte[],int,int,System.Threading.CancellationToken)
    8721      125      38727 System.Net.HttpWebRequest:RunWithTimeout<int> (System.Func`2<System.Threading.CancellationToken, System.Threading.Tasks.Task`1<int>>,int,System.Action,System.Func`1<bool>,System.Threading.CancellationToken)
    8688      135      77453 System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1<int>:Start<System.Net.WebReadStream/<ReadAsync>d__28> (System.Net.WebReadStream/<ReadAsync>d__28&)
    7434      824     161254 (wrapper runtime-invoke) <Module>:runtime_invoke_bool (object,intptr,intptr,intptr)
    6295      192      77452 System.Net.FixedSizeReadStream/<ProcessReadAsync>d__5:MoveNext ()
    5527       39      38727 System.Net.WebResponseStream/<>c__DisplayClass41_0:<ProcessRead>b__0 (System.Threading.CancellationToken)
    4709      209      77451 System.Net.BufferedReadStream/<ProcessReadAsync>d__2:MoveNext ()
    4367       62      38727 System.Net.FixedSizeReadStream:ProcessReadAsync (byte[],int,int,System.Threading.CancellationToken)
    4274       74      38727 System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1<int>:Start<System.Net.FixedSizeReadStream/<ProcessReadAsync>d__5> (System.Net.FixedSizeReadStream/<ProcessReadAsync>d__5&)
    3841      232      76196 System.Net.HttpWebRequest/<RunWithTimeoutWorker>d__244`1<int>:MoveNext ()
    3822     1848    2201934 (wrapper alloc) object:ProfilerAllocSmall (intptr,intptr)
    3479      691      76374 System.Net.ServicePointScheduler/<WaitAsync>d__46:MoveNext ()
    3453       69      38728 System.Net.Sockets.SocketAsyncResult/<>c:<Complete>b__27_0 (object)
    3342       90      38726 System.Threading.Tasks.TaskFactory`1/FromAsyncTrimPromise`1<int, System.IO.Stream>:CompleteFromAsyncResult (System.IAsyncResult)
    3208       73      38726 System.Threading.Tasks.TaskFactory`1/FromAsyncTrimPromise`1<int, System.IO.Stream>:Complete (System.IO.Stream,System.Func`3<System.IO.Stream, System.IAsyncResult, int>,System.IAsyncResult,bool)
    3008       62      38727 System.Net.HttpWebRequest:RunWithTimeoutWorker<int> (System.Threading.Tasks.Task`1<int>,int,System.Action,System.Func`1<bool>,System.Threading.CancellationTokenSource)
    2915       71      38727 System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1<int>:Start<System.Net.HttpWebRequest/<RunWithTimeoutWorker>d__244`1<int>> (System.Net.HttpWebRequest/<RunWithTimeoutWorker>d__244`1<int>&)
    2274       61      38726 System.Net.BufferedReadStream:ProcessReadAsync (byte[],int,int,System.Threading.CancellationToken)
    2183       81      38726 System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1<int>:Start<System.Net.BufferedReadStream/<ProcessReadAsync>d__2> (System.Net.BufferedReadStream/<ProcessReadAsync>d__2&)
    2045       65      38730 System.Net.ServicePointScheduler:WaitAsync (System.Threading.Tasks.Task,int)
    1959     1959    2315319 (wrapper managed-to-native) object:__icall_wrapper_mono_profiler_raise_gc_allocation (object)
    1949       55      38730 System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1<bool>:Start<System.Net.ServicePointScheduler/<WaitAsync>d__46> (System.Net.ServicePointScheduler/<WaitAsync>d__46&)
    1816       48      38728 System.IOSelectorJob:System.Threading.IThreadPoolWorkItem.ExecuteWorkItem ()
    1766       84      38726 System.Net.Sockets.Socket/<>c:<.cctor>b__318_8 (System.IOAsyncResult)
    1228       89      38726 System.Threading.Tasks.TaskFactory`1<int>:FromAsyncTrim<System.IO.Stream, System.IO.Stream/ReadWriteParameters> (System.IO.Stream,System.IO.Stream/ReadWriteParameters,System.Func`5<System.IO.Stream, System.IO.Stream/ReadWriteParameters, System.AsyncCallback, object, System.IAsyncResult>,System.Func`3<System.IO.Stream, System.IAsyncResult, int>)
    1133       41      38730 System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1<bool>:SetResult (bool)
    1089       73      37645 System.Threading.Tasks.Task`1<bool>:TrySetResult (bool)
    1060      266      77445 System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1<int>:AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1/ConfiguredTaskAwaiter<int>, System.Net.WebReadStream/<ReadAsync>d__28> (System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1/ConfiguredTaskAwaiter<int>&,System.Net.WebReadStream/<ReadAsync>d__28&)
    1009       49      38726 System.Net.Sockets.NetworkStream:BeginRead (byte[],int,int,System.AsyncCallback,object)
     943       34      38726 System.Net.Sockets.Socket:BeginReceive (byte[],int,int,System.Net.Sockets.SocketFlags,System.AsyncCallback,object)
     926      116      38726 System.Net.Sockets.Socket:Receive_internal (System.Net.Sockets.SafeSocketHandle,byte*,int,System.Net.Sockets.SocketFlags,int&,bool)
     909      161      38726 System.Net.Sockets.Socket:BeginReceive (byte[],int,int,System.Net.Sockets.SocketFlags,System.Net.Sockets.SocketError&,System.AsyncCallback,object)
     822      353     461744 System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1<int>:get_Task ()
     755       41      38727 System.Net.Sockets.SocketAsyncResult:Complete (int)
     713      234      38728 System.Net.Sockets.SocketAsyncResult:Complete ()
     566      152      38725 System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1<int>:AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1/ConfiguredTaskAwaiter<int>, System.Net.BufferedReadStream/<ProcessReadAsync>d__2> (System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1/ConfiguredTaskAwaiter<int>&,System.Net.BufferedReadStream/<ProcessReadAsync>d__2&)
     549      549     376995 (wrapper managed-to-native) System.Threading.Thread:YieldInternal ()
     538      135      37469 System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1<int>:AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1/ConfiguredTaskAwaiter<bool>, System.Net.HttpWebRequest/<RunWithTimeoutWorker>d__244`1<int>> (System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1/ConfiguredTaskAwaiter<bool>&,System.Net.HttpWebRequest/<RunWithTimeoutWorker>d__244`1<int>&)
     534      138      38725 System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1<int>:AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1/ConfiguredTaskAwaiter<int>, System.Net.FixedSizeReadStream/<ProcessReadAsync>d__5> (System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1/ConfiguredTaskAwaiter<int>&,System.Net.FixedSizeReadStream/<ProcessReadAsync>d__5&)
     521      521     169602 (wrapper managed-to-native) System.Environment:get_ProcessorCount ()
     521      131      37020 System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1<int>:AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1/ConfiguredTaskAwaiter<int>, System.Net.WebResponseStream/<ReadAsync>d__40> (System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1/ConfiguredTaskAwaiter<int>&,System.Net.WebResponseStream/<ReadAsync>d__40&)
     489      112      37645 System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1<bool>:AwaitUnsafeOnCompleted<System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1/ConfiguredTaskAwaiter<System.Threading.Tasks.Task>, System.Net.ServicePointScheduler/<WaitAsync>d__46> (System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1/ConfiguredTaskAwaiter<System.Threading.Tasks.Task>&,System.Net.ServicePointScheduler/<WaitAsync>d__46&)
     477      477      38726 (wrapper managed-to-native) System.Net.Sockets.Socket:Receive_internal (intptr,byte*,int,System.Net.Sockets.SocketFlags,int&,bool)
     444      444     161254 (wrapper managed-to-native) System.Threading.ThreadPool:RequestWorkerThread ()
     432      108      38727 System.Net.Sockets.Socket:QueueIOSelectorJob (System.Threading.SemaphoreSlim,intptr,System.IOSelectorJob)
     398       33      38728 System.Net.WebCompletionSource:.ctor ()
     397      114      38728 (wrapper runtime-invoke) <Module>:runtime_invoke_void_object_byte (object,intptr,intptr,intptr)
     383      158     193632 System.Threading.Tasks.Task`1<int>:ConfigureAwait (bool)
     365      108      38731 System.Net.WebCompletionSource`1<T_REF>:.ctor (bool)
     358       44      38726 System.Net.Sockets.NetworkStream:EndRead (System.IAsyncResult)
     354      153     116195 System.Net.WebOperation:get_Aborted ()
     314       43      38726 System.Net.Sockets.Socket:EndReceive (System.IAsyncResult)
     298        2          1 System.Net.HttpWebRequest:GetResponse ()
     274       63      77457 System.Net.WebOperation:ThrowIfDisposed (System.Threading.CancellationToken)
     271      124      38726 System.Net.Sockets.Socket:EndReceive (System.IAsyncResult,System.Net.Sockets.SocketError&)
     268      135     157086 (wrapper alloc) object:ProfilerAllocVector (intptr,intptr)
     266       40      38730 System.Net.WebOperation:ThrowIfClosedOrDisposed ()
     260      170     193632 System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1/ConfiguredTaskAwaiter<int>:GetResult ()
     256      256     403143 (wrapper managed-to-native) System.Environment:get_TickCount ()
     226       41      38736 System.Net.WebOperation:ThrowIfClosedOrDisposed (System.Threading.CancellationToken)
     225      148     193632 System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1<int>:.ctor (System.Threading.Tasks.Task`1<int>,bool)
     212      212      38728 (wrapper managed-to-native) System.IOSelector:Add (intptr,System.IOSelectorJob)
     209      209     462362 (wrapper managed-to-native) System.Buffer:InternalMemcpy (byte*,byte*,int)
     207      207     421964 (wrapper managed-to-native) System.Threading.Interlocked:Exchange (object&,object)
     197      197     377301 (wrapper managed-to-native) System.Threading.Monitor:Exit (object)
     185       41      38736 System.Net.WebOperation:get_Closed ()
     183        0          2 System.Configuration.Configuration:.ctor (System.Configuration.InternalConfigurationSystem,string)
     182        1          1 System.Net.WebRequest:Create (string)
     179       77      38728 System.Net.WebCompletionSource`1<T_REF>:TrySetCompleted ()
     173      129      38728 System.Net.Sockets.SafeSocketHandle:RegisterForBlockingSyscall ()
     166        2          1 System.Net.WebRequest:Create (System.Uri,bool)
     165      165      33174 (wrapper managed-to-native) System.Threading.Monitor:Monitor_pulse_all (object)
     159      118      38728 System.Net.Sockets.SafeSocketHandle:UnRegisterForBlockingSyscall ()
     155       92      38730 (wrapper remoting-invoke-with-check) System.Threading.Timer:.ctor (System.Threading.TimerCallback,object,int,int)
     150       99     116195 (wrapper remoting-invoke-with-check) System.Net.HttpWebRequest:get_Aborted ()
     146        0          5 System.Configuration.ConfigurationManager:GetSection (string)
     146        0          5 System.Configuration.ClientConfigurationSystem:System.Configuration.Internal.IInternalConfigSystem.GetSection (string)
     144       61      76376 System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1<bool>:get_Task ()
     139      139      41676 (wrapper managed-to-native) object:__icall_wrapper_mono_gc_alloc_obj (intptr,intptr)
     137        3          1 System.Net.WebRequest:get_PrefixList ()
     133        0          1 System.Net.WebRequest:PopulatePrefixList ()
     131      131      68104 (wrapper managed-to-native) System.Threading.Thread:SleepInternal (int)
     109       97     191916 System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1/ConfiguredTaskAwaiter<int>:UnsafeOnCompleted (System.Action)
     109       72      77464 System.Net.Sockets.Socket:ThrowIfDisposedAndClosed ()
     105      105     268110 System.Threading.Tasks.Task`1<int>:.ctor ()
      95        0          5 System.Configuration.ClientConfigurationSystem:get_Configuration ()
      94        0          1 System.Configuration.ConfigurationManager:OpenExeConfigurationInternal (System.Configuration.ConfigurationUserLevel,System.Reflection.Assembly,string)
      94        0          1 System.Configuration.InternalConfigurationFactory:Create (System.Type,object[])
      92       92     232360 System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1<int>:Create ()
      91       91     229384 System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1<int>:SetStateMachine (System.Runtime.CompilerServices.IAsyncStateMachine)
      91        1          2 System.Configuration.Configuration:Init (System.Configuration.Internal.IConfigSystem,string,System.Configuration.Configuration)
      90       60      77445 System.Net.WebReadStream/<ReadAsync>d__28:SetStateMachine (System.Runtime.CompilerServices.IAsyncStateMachine)
      90       90     193632 System.Threading.Tasks.Task`1<int>:get_ResultOnSuccess ()
      89        0          2 System.Configuration.Configuration:Load ()
      83       32      38729 System.Threading.Tasks.Task`1<bool>:ConfigureAwait (bool)
      77        0         51 (wrapper runtime-invoke) object:runtime_invoke_void (object,intptr,intptr,intptr)
      77       77     193632 System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1/ConfiguredTaskAwaiter<int>:get_IsCompleted ()
      77       77     193632 System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1<int>:GetAwaiter ()
      77       77     193632 System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1/ConfiguredTaskAwaiter<int>:.ctor (System.Threading.Tasks.Task`1<int>,bool)
      75       56      38728 System.IOAsyncResult:set_IsCompleted (bool)
      72       51      38729 (wrapper remoting-invoke-with-check) System.Threading.Timer:Dispose ()
      64       64      80625 (wrapper managed-to-native) System.Threading.ThreadPool:NotifyWorkItemComplete ()
      63        1          1 System.Configuration.Configuration:ReadConfigFile (System.Xml.XmlReader,string)
      63       63      77471 (wrapper managed-to-native) System.GC:_SuppressFinalize (object)
      63       63     155867 (wrapper stelemref) object:virt_stelemref_class_small_idepth (intptr,object)
      62        0         93 System.Configuration.Configuration:GetSectionInstance (System.Configuration.SectionInfo,bool)
      57       57      80626 (wrapper managed-to-native) System.Threading.ThreadPool:NotifyWorkItemQueued ()
      54       54     105075 (wrapper managed-to-native) System.Threading.Monitor:Monitor_test_synchronised (object)
      53        3          2 System.Net.ServicePointScheduler/<RunScheduler>d__32:MoveNext ()
      53        0          1 System.Net.ServicePointScheduler:<Run>b__31_0 ()
      53        0          1 System.Net.ServicePointScheduler:RunScheduler ()
      52       35      38729 System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1/ConfiguredTaskAwaiter<bool>:GetResult ()
      52        1          1 System.Runtime.CompilerServices.AsyncTaskMethodBuilder:Start<System.Net.ServicePointScheduler/<RunScheduler>d__32> (System.Net.ServicePointScheduler/<RunScheduler>d__32&)
      52        1          1 System.Net.WebRequest:<GetResponseAsync>b__79_0 ()
      51        1          3 System.Net.HttpWebRequest/<MyGetResponseAsync>d__246:MoveNext ()
      51       51     116197 System.Net.HttpWebRequest:get_Aborted ()
      51        0          1 System.Net.HttpWebRequest:BeginGetResponse (System.AsyncCallback,object)
      50       33      38729 System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1<bool>:.ctor (System.Threading.Tasks.Task`1<bool>,bool)
      50       50     116196 System.Net.Sockets.Socket:get_CleanedUp ()
      50       50     116202 System.Net.WebOperation:get_Request ()
      49        0          5 System.Configuration.Configuration:GetSection (string)
      49        0          1 System.Net.HttpWebRequest:RunWithTimeout<T_REF> (System.Func`2<System.Threading.CancellationToken, System.Threading.Tasks.Task`1<T_REF>>)
      49        1          4 System.Net.WebOperation/<Run>d__58:MoveNext ()
      49       31      38728 System.Net.Sockets.SocketAsyncResult:get_Handle ()
      47        0          5 System.Configuration.ConfigurationSectionCollection:get_Item (string)
      47       30      38725 System.Net.BufferedReadStream/<ProcessReadAsync>d__2:SetStateMachine (System.Runtime.CompilerServices.IAsyncStateMachine)
      47        1          2 System.Net.WebConnection/<InitConnection>d__19:MoveNext ()
      46       30      38726 System.Threading.Tasks.TaskFactory`1/FromAsyncTrimPromise`1<int, System.IO.Stream>:.ctor (System.IO.Stream,System.Func`3<System.IO.Stream, System.IAsyncResult, int>)
      46       31      37469 System.Net.HttpWebRequest/<RunWithTimeoutWorker>d__244`1<int>:SetStateMachine (System.Runtime.CompilerServices.IAsyncStateMachine)
      46        0          1 System.Net.HttpWebRequest:MyGetResponseAsync (System.Threading.CancellationToken)
      45       29      37645 System.Net.ServicePointScheduler/<WaitAsync>d__46:SetStateMachine (System.Runtime.CompilerServices.IAsyncStateMachine)
      45        2          2 System.Net.WebConnection/<Connect>d__16:MoveNext ()
      45       30      38725 System.Net.FixedSizeReadStream/<ProcessReadAsync>d__5:SetStateMachine (System.Runtime.CompilerServices.IAsyncStateMachine)
      45       30      38728 System.Net.Sockets.SocketAsyncResult:.ctor (System.Net.Sockets.Socket,System.AsyncCallback,object,System.Net.Sockets.SocketOperation)
      45       45     116178 System.Net.WebReadStream:get_InnerStream ()
      44        3          1 System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1<System.Net.HttpWebResponse>:Start<System.Net.HttpWebRequest/<MyGetResponseAsync>d__246> (System.Net.HttpWebRequest/<MyGetResponseAsync>d__246&)
      44       30      37020 System.Net.WebResponseStream/<ReadAsync>d__40:SetStateMachine (System.Runtime.CompilerServices.IAsyncStateMachine)
      43       43      77962 (wrapper stelemref) object:virt_stelemref_sealed_class (intptr,object)
      42       42      38791 (wrapper managed-to-native) object:__icall_wrapper_ves_icall_object_new_specific (intptr)
      42        0          6 System.Threading.Tasks.Task`1<System.Threading.Tasks.VoidTaskResult>:TrySetResult (System.Threading.Tasks.VoidTaskResult)
      42        0          1 System.Net.ServicePointScheduler:RunSchedulerIteration ()
      41        1          2 System.Net.ServicePointScheduler:SchedulerIteration (System.Net.ServicePointScheduler/ConnectionGroup)
      39        1          1 System.Net.ServicePointScheduler/ConnectionGroup:CreateOrReuseConnection (System.Net.WebOperation,bool)
      38       38      77456 System.IOAsyncResult:get_AsyncCallback ()
      37        0          1 System.Net.HttpWebRequest:SendRequest (bool,System.Net.BufferOffsetSize,System.Threading.CancellationToken)
      37        0          4 System.Configuration.SectionGroupInfo:ReadContent (System.Xml.XmlReader,System.Configuration.Configuration,bool,bool)
      37        1         12 System.Configuration.SectionGroupInfo:ReadConfig (System.Configuration.Configuration,string,System.Xml.XmlReader)
      36       36      77456 System.IOAsyncResult:get_CompletedSynchronously ()
      36        0          1 System.Net.WebConnection:StartOperation (System.Net.WebOperation,bool)
      35        0          1 System.Net.WebOperation:Run ()
      35        0          1 System.Runtime.CompilerServices.AsyncVoidMethodBuilder:Start<System.Net.WebOperation/<Run>d__58> (System.Net.WebOperation/<Run>d__58&)
      33        0          1 System.Net.WebConnection:InitConnection (System.Net.WebOperation,System.Threading.CancellationToken)
      33        0          1 System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1<System.Net.WebRequestStream>:Start<System.Net.WebConnection/<InitConnection>d__19> (System.Net.WebConnection/<InitConnection>d__19&)
      32        1          1 System.Net.HttpWebRequest:GetServicePoint ()
      31       21      37470 System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1/ConfiguredTaskAwaiter<bool>:UnsafeOnCompleted (System.Action)
      31       31      77455 System.Net.WebReadStream:get_Operation ()
      31        0          1 System.Net.WebConnection:Connect (System.Net.WebOperation,System.Threading.CancellationToken)
      31        0          1 System.Runtime.CompilerServices.AsyncTaskMethodBuilder:Start<System.Net.WebConnection/<Connect>d__16> (System.Net.WebConnection/<Connect>d__16&)
      31        4         50 (wrapper managed-to-native) System.Reflection.RuntimeConstructorInfo:InternalInvoke (System.Reflection.RuntimeConstructorInfo,object,object[],System.Exception&)
      29        0          1 System.Configuration.SectionGroupInfo:ReadRootData (System.Xml.XmlReader,System.Configuration.Configuration,bool)
      28        1        562 System.Xml.XmlTextReader:Read ()
      28        3         19 (wrapper managed-to-native) object:__icall_wrapper_mono_generic_class_init (intptr)
      27        0         16 System.Configuration.SectionInfo:ReadData (System.Configuration.Configuration,System.Xml.XmlReader,bool)
      27        3        562 System.Xml.XmlTextReaderImpl:Read ()
      26        0         16 System.Xml.XmlReader:ReadOuterXml ()
      24        9         69 (wrapper runtime-invoke) object:runtime_invoke_void (object,intptr,intptr,intptr)
      23        0         37 System.ComponentModel.TypeDescriptor:GetConverter (System.Type)
      23        0          5 System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1<System.Threading.Tasks.VoidTaskResult>:SetResult (System.Threading.Tasks.Task`1<System.Threading.Tasks.VoidTaskResult>)
      23        0          9 System.Configuration.ConfigInfo:CreateInstance ()
      23        0          4 System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1<System.Threading.Tasks.VoidTaskResult>:SetResult (System.Threading.Tasks.VoidTaskResult)
      22        1         16 System.Xml.XmlWriter:WriteNode (System.Xml.XmlReader,bool)
      22        0          8 System.Configuration.SectionInfo:CreateInstance ()
      22       22      38740 System.Net.WebConnectionStream:get_Operation ()
      22        1          1 System.Net.ServicePointManager:FindServicePoint (System.Uri,System.Net.IWebProxy)
      22       22      38732 (wrapper managed-to-native) System.Threading.Timer:GetTimeMonotonic ()
      21       21      38727 System.Net.WebResponseStream:get_CanRead ()
      21       21      38728 System.IOAsyncResult:get_IsCompleted ()
      21       21      38728 System.Net.Sockets.SocketAsyncResult:CheckIfThrowDelayedException ()
      21       21      38727 (wrapper managed-to-native) System.Threading.Monitor:Monitor_pulse (object)
      21       21      38728 System.IOAsyncResult:get_AsyncState ()
      21       21      38727 System.Net.Sockets.SocketAsyncResult:get_ErrorCode ()
      20        0          1 System.Net.HttpRequestCreator:Create (System.Uri)
      20       20      38728 System.Net.Sockets.Socket:ValidateEndIAsyncResult (System.IAsyncResult,string,string)
      19       19      38732 (wrapper stelemref) object:virt_stelemref_complex (intptr,object)
      19        0         37 System.ComponentModel.TypeDescriptor/TypeDescriptionNode/DefaultTypeDescriptor:System.ComponentModel.ICustomTypeDescriptor.GetConverter ()
      19        0         37 System.ComponentModel.ReflectTypeDescriptionProvider:GetConverter (System.Type,object)
      18        1         37 System.ComponentModel.ReflectTypeDescriptionProvider/ReflectedTypeData:GetConverter (object)
      18       18      38729 System.Net.Sockets.Socket:get_Handle ()
      17       17      38736 System.Threading.Tasks.Task`1<System.Threading.Tasks.VoidTaskResult>:.ctor ()
      17        0          1 System.Net.ServicePoint:get_HostEntry ()
      17        0          3 System.Configuration.ConfigurationProperty:.ctor (string,System.Type,object,System.Configuration.ConfigurationPropertyOptions)
      17       17      38729 System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1/ConfiguredTaskAwaiter<bool>:.ctor (System.Threading.Tasks.Task`1<bool>,bool)
      17       17      38729 System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1/ConfiguredTaskAwaiter<bool>:get_IsCompleted ()
      17        0          1 System.Net.Dns:GetHostEntry (string)
      17        0          1 System.Net.Configuration.WebRequestModulesSection:.cctor ()
      17       17      38729 System.Threading.Tasks.Task`1<bool>:get_ResultOnSuccess ()
      16       16      37647 System.Threading.Tasks.Task`1<bool>:.ctor ()
      16        1        181 System.Xml.XmlWriter:WriteAttributes (System.Xml.XmlReader,bool)
      16        5       2976 System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1<int>:GetTaskForResult (int)
      16       16      38730 (wrapper remoting-invoke-with-check) System.Threading.Timer:KeepRootedWhileScheduled ()
      16       16      38728 System.Net.WebCompletionSource`1/Result<T_REF>:.ctor (System.Net.WebCompletionSource`1/Status<T_REF>,System.Runtime.ExceptionServices.ExceptionDispatchInfo)
      16       16      38728 System.IOSelectorJob:.ctor (System.IOOperation,System.IOAsyncCallback,System.IOAsyncResult)
      16       16      37645 System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1<bool>:SetStateMachine (System.Runtime.CompilerServices.IAsyncStateMachine)
      15       15      38727 System.Net.FixedSizeReadStream:get_ContentLength ()
      15        0          1 System.Threading.Tasks.TaskFactory`1/<>c__DisplayClass38_0`1<System.Threading.Tasks.VoidTaskResult, System.Net.EndPoint>:<FromAsyncImpl>b__0 (System.IAsyncResult)
      15        1        558 System.Xml.XmlTextReaderImpl:ParseElementContent ()
      15       15      38727 System.Net.WebResponseStream/<>c__DisplayClass41_0:.ctor ()
      15       15      38729 System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1<bool>:GetAwaiter ()
      15       15      38726 System.Net.Sockets.NetworkStream:get_CanRead ()
      15       15      38731 System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1<bool>:Create ()
      15        0          1 System.Threading.Tasks.TaskFactory`1<System.Threading.Tasks.VoidTaskResult>:FromAsyncCoreLogic (System.IAsyncResult,System.Func`2<System.IAsyncResult, System.Threading.Tasks.VoidTaskResult>,System.Action`1<System.IAsyncResult>,System.Threading.Tasks.Task`1<System.Threading.Tasks.VoidTaskResult>,bool)
      15        0          1 Mono.Net.CFNetwork/CFWebProxy:IsBypassed (System.Uri)
      15       15      38727 System.Net.WebConnectionStream:get_ReadTimeout ()
      15        0         75 System.Configuration.PropertyInformation:get_Value ()
      15        0          1 Mono.Net.CFNetwork/CFWebProxy:GetProxy (System.Uri)
      15       15      38727 System.Net.Sockets.Socket:ThrowIfBufferOutOfRange (byte[],int,int)
      15       15      38727 System.Net.Sockets.Socket:ThrowIfBufferNull (byte[])
      15        0          1 System.Net.Dns:GetHostByName (string)
      14       14      38727 System.Net.Sockets.Socket/<>c__DisplayClass308_0:.ctor ()
      14       14      38728 System.IOAsyncResult:.ctor (System.AsyncCallback,object)
      13        0          2 System.Net.WebRequestStream/<Initialize>d__36:MoveNext ()
      13        0         57 System.ComponentModel.TypeDescriptor:GetAttributes (System.Type)
      13        0          1 System.Configuration.ConfigurationSection:DeserializeSection (System.Xml.XmlReader)
      13        1          5 System.Configuration.ConfigurationElement:DeserializeElement (System.Xml.XmlReader,bool)
      12        1          1 System.Configuration.ConfigurationSection:DoDeserializeSection (System.Xml.XmlReader)
      12        0         60 System.Xml.XmlReader:MoveToContent ()
      12        0         57 System.ComponentModel.TypeDescriptor/TypeDescriptionNode/DefaultTypeDescriptor:System.ComponentModel.ICustomTypeDescriptor.GetAttributes ()
      12        0          2 System.Net.WebRequestStream/<SetHeadersAsync>d__37:MoveNext ()
      12        0         57 System.ComponentModel.ReflectTypeDescriptionProvider:GetAttributes (System.Type)
      12        1          2 System.Configuration.InternalConfigurationHost:OpenStreamForRead (string)
      11        2         57 System.ComponentModel.ReflectTypeDescriptionProvider/ReflectedTypeData:GetAttributes ()
      11        0          4 System.Net.WebCompletionSource`1/<WaitForCompletion>d__15<T_REF>:MoveNext ()
      11        0          1 (wrapper remoting-invoke-with-check) System.Net.HttpWebRequest:.ctor (System.Uri)
      10        0          1 System.Net.HttpWebRequest:.ctor (System.Uri)
      10        1        215 System.Xml.XmlTextReaderImpl:ParseElement ()
      10        0          1 (wrapper remoting-invoke-with-check) System.Net.WebRequestStream:Initialize (System.Threading.CancellationToken)
      10        0         16 System.Configuration.ConfigurationElement:Reset (System.Configuration.ConfigurationElement)
      10        0          1 System.Net.WebRequestStream:Initialize (System.Threading.CancellationToken)
      10        0          1 System.Runtime.CompilerServices.AsyncTaskMethodBuilder:Start<System.Net.WebRequestStream/<Initialize>d__36> (System.Net.WebRequestStream/<Initialize>d__36&)
       9        0         13 System.Configuration.ElementInformation:Reset (System.Configuration.ElementInformation)
       9        0          1 System.Net.Sockets.Socket:get_FamilyHint ()
       9        0          1 ConfigXmlTextReader:.ctor (System.IO.Stream,string)
       9        0          1 System.Net.HttpWebRequest:.cctor ()
       9        0          4 System.Net.Sockets.Socket:get_OSSupportsIPv4 ()
       9        0          1 System.Net.ServicePointManager:.cctor ()
       9        0          1 Mono.Net.CFNetwork:GetSystemProxySettings ()
       9        2          2 System.Net.WebResponseStream/<InitReadAsync>d__51:MoveNext ()
       9        0         12 System.Net.Sockets.Socket:InitializeSockets ()
       9        0          1 System.Configuration.ConfigurationSettings:GetConfig (string)
       9        0         31 System.Configuration.PropertyInformation:Reset (System.Configuration.PropertyInformation)
       9        0          1 System.Net.WebRequestStream:SetHeadersAsync (bool,System.Threading.CancellationToken)
       8        0          1 System.Runtime.CompilerServices.AsyncTaskMethodBuilder:Start<System.Net.WebRequestStream/<SetHeadersAsync>d__37> (System.Net.WebRequestStream/<SetHeadersAsync>d__37&)
       8        0          1 System.Xml.XmlTextReader:.ctor (System.IO.Stream)
       8        0          3 System.Configuration.SectionGroupInfo:ReadData (System.Configuration.Configuration,System.Xml.XmlReader,bool)
       8        0          2 System.Net.Sockets.Socket:IsProtocolSupported (System.Net.NetworkInformation.NetworkInterfaceComponent)
       8        0          1 System.Net.WebRequest:get_InternalDefaultWebProxy ()
       8        1         85 System.Configuration.SectionInfo:ReadConfig (System.Configuration.Configuration,string,System.Xml.XmlReader)
       8        0          1 System.Net.Configuration.DefaultProxySectionInternal:GetSection ()
       8        0        211 System.Xml.XmlTextReader:Skip ()
       8        0          1 System.Xml.XmlTextReaderImpl:.ctor (System.IO.Stream)
       8        0          2 System.Net.NetworkInformation.NetworkInterface:GetAllNetworkInterfaces ()
       7        0         36 System.Configuration.ConfigurationElement:get_Item (System.Configuration.ConfigurationProperty)
       7        7       2025 (wrapper managed-to-native) object:__icall_wrapper_mono_gc_alloc_vector (intptr,intptr,intptr)
       7        0         36 System.Configuration.ConfigurationElement:get_Item (string)
       7        0          1 System.Uri:.cctor ()
       7        0        211 System.Xml.XmlTextReaderImpl:Skip ()
       7        1          1 System.Xml.XmlTextReaderImpl:.ctor (string,System.IO.Stream,System.Xml.XmlNameTable)
       7        0          1 System.Net.Configuration.DefaultProxySectionInternal:GetDefaultProxy_UsingOldMonoCode ()
       7        3        172 System.Xml.XmlTextReaderImpl:ParseAttributes ()
       7        1          2 System.Net.NetworkInformation.SystemNetworkInterface:GetNetworkInterfaces ()
       7        0          6 System.Uri:GetParts (System.UriComponents,System.UriFormat)
       7        0          3 System.Uri:.ctor (string)
       7        0          7 System.Uri:GetComponents (System.UriComponents,System.UriFormat)
       7        0          3 System.Uri:CreateThis (string,bool,System.UriKind)
       6        1         32 System.Configuration.ElementInformation:.ctor (System.Configuration.ConfigurationElement,System.Configuration.PropertyInformation)
       6        0          8 System.Uri:GetComponentsHelper (System.UriComponents,System.UriFormat)
       6        3          1 (wrapper remoting-invoke-with-check) System.IO.FileStream:.ctor (string,System.IO.FileMode,System.IO.FileAccess,System.IO.FileShare,int,System.IO.FileOptions)
       6        0          1 System.Net.Sockets.SocketTaskExtensions:ConnectAsync (System.Net.Sockets.Socket,System.Net.EndPoint)
       6        0         27 System.Configuration.ConfigurationProperty:.ctor (string,System.Type,object)
       6        0          1 System.Threading.Tasks.TaskFactory`1<System.Threading.Tasks.VoidTaskResult>:FromAsyncImpl<System.Net.EndPoint> (System.Func`4<System.Net.EndPoint, System.AsyncCallback, object, System.IAsyncResult>,System.Func`2<System.IAsyncResult, System.Threading.Tasks.VoidTaskResult>,System.Action`1<System.IAsyncResult>,System.Net.EndPoint,object,System.Threading.Tasks.TaskCreationOptions)
       6        1          2 System.Net.NetworkInformation.MacOsNetworkInterfaceAPI:GetAllNetworkInterfaces ()
       6        0          4 System.Configuration.ConfigurationElementCollection:InitFromProperty (System.Configuration.PropertyInformation)
       6        0          1 System.Net.HttpWebRequest:GetResponseFromData (System.Net.WebResponseStream,System.Threading.CancellationToken)
       5        0          1 System.Net.Sockets.SocketTaskExtensions/<>c:<ConnectAsync>b__2_0 (System.Net.EndPoint,System.AsyncCallback,object)
       5        0         17 System.Configuration.ConfigurationElement:InitFromProperty (System.Configuration.PropertyInformation)
       5        1          2 System.Net.Configuration.ConnectionManagementData:GetMaxConnections (string)
       5        2          2 System.Xml.XmlTextReaderImpl:ParseXmlDeclaration (bool)
       5        0          1 System.Net.Sockets.Socket:BeginConnect (System.Net.EndPoint,System.AsyncCallback,object)
       5        0          2 System.Net.ServicePointScheduler/AsyncManualResetEvent:WaitAsync (int)
       5        0          1 (wrapper remoting-invoke-with-check) System.Net.HttpWebRequest:GetRequestHeaders ()
       5        0          1 Mono.Net.CFProxySettings:.cctor ()
       5        3          1 System.UriParser:.cctor ()
       5        0          2 System.Uri:get_AbsoluteUri ()
       5        0         18 System.ComponentModel.ReflectTypeDescriptionProvider:SearchIntrinsicTable (System.Collections.Hashtable,System.Type)
       5        2          1 System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1<System.ValueTuple`5<System.Net.HttpWebResponse, bool, bool, System.Net.BufferOffsetSize, System.Net.WebOperation>>:Start<System.Net.HttpWebRequest/<GetResponseFromData>d__247> (System.Net.HttpWebRequest/<GetResponseFromData>d__247&)
       5        1          1 System.Net.HttpWebRequest:GetRequestHeaders ()
       5        0          1 System.Threading.Tasks.TaskFactory`1/FromAsyncTrimPromise`1<System.Threading.Tasks.VoidTaskResult, System.IO.Stream>:CompleteFromAsyncResult (System.IAsyncResult)
       5        0         94 System.ComponentModel.TypeDescriptor:GetDescriptor (System.Type,string)
       5        5          4 (wrapper managed-to-native) Mono.CFObject:dlopen (string,int)
       5        1          3 System.Uri:InitializeUri (System.ParsingError,System.UriKind,System.UriFormatException&)
       5        0          4 System.Configuration.ConfigurationElement:GetDefaultCollection ()
       4        0          1 System.Threading.Tasks.TaskFactory`1/FromAsyncTrimPromise`1<System.Threading.Tasks.VoidTaskResult, System.IO.Stream>:Complete (System.IO.Stream,System.Func`3<System.IO.Stream, System.IAsyncResult, System.Threading.Tasks.VoidTaskResult>,System.IAsyncResult,bool)
       4        0          1 System.Net.Sockets.Socket:BeginSConnect (System.Net.Sockets.SocketAsyncResult)
       4        0          1 Mono.Net.CFNetwork:GetProxiesForUri (System.Uri,Mono.Net.CFProxySettings)
       4        0          4 System.Configuration.ConfigurationElementCollection:OnDeserializeUnrecognizedElement (string,System.Xml.XmlReader)
       4        0         95 System.ComponentModel.TypeDescriptor:NodeFor (System.Type)
       4        0          4 System.Configuration.ConfigurationElement:get_Properties ()
       4        1          1 System.Net.WebResponseStream:GetResponse (System.Net.BufferOffsetSize,int&,System.Net.ReadState&)
       4        0          4 System.Configuration.ElementMap:GetMap (System.Type)
       4        1         50 (wrapper runtime-invoke) object:runtime_invoke_virtual_void__this__ (object,intptr,intptr,intptr)
       4        0         19 System.ComponentModel.ReflectTypeDescriptionProvider:CreateInstance (System.Type,System.Type)
       4        1          1 System.Net.WebRequest:.cctor ()
       3        0         95 System.ComponentModel.TypeDescriptor:NodeFor (System.Type,bool)
       3        0          1 System.Net.ServicePoint:SendRequest (System.Net.WebOperation,string)
       3        0         12 System.Configuration.SectionGroupInfo:ResetModified (System.Configuration.Configuration)
       3        2          2 System.Configuration.ElementMap:.ctor (System.Type)
       3        0          1 System.Net.ServicePointScheduler:SendRequest (System.Net.WebOperation,string)
       3        1          2 System.Xml.XmlTextReaderImpl:.ctor (System.Xml.XmlNameTable)
       3        0          1 System.Net.HttpWebRequest:GetHeaders ()
       3        0          7 System.Net.IPAddressParser:Parse (System.ReadOnlySpan`1<char>,bool)
       3        0          1 (wrapper remoting-invoke-with-check) System.Net.WebResponseStream:InitReadAsync (System.Threading.CancellationToken)
       3        0          1 System.Net.ServicePointScheduler:Run ()
       3        0          1 System.Net.Dns:hostent_to_IPHostEntry (string,string,string[],string[])
       3        0          1 System.Net.WebResponseStream:InitReadAsync (System.Threading.CancellationToken)
       3        0          1 System.Configuration.Configuration:ResetModified ()
       3        0          1 System.Net.HttpWebRequest:RunWithTimeoutWorker<T_REF> (System.Threading.Tasks.Task`1<T_REF>,int,System.Action,System.Func`1<bool>,System.Threading.CancellationTokenSource)
       2        1          1 System.Net.HttpWebRequest/<GetResponseFromData>d__247:MoveNext ()
       2        0          1 System.Runtime.CompilerServices.AsyncTaskMethodBuilder:Start<System.Net.WebResponseStream/<InitReadAsync>d__51> (System.Net.WebResponseStream/<InitReadAsync>d__51&)
       2        1          1 System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1<System.Net.HttpWebResponse>:Start<System.Net.HttpWebRequest/<RunWithTimeoutWorker>d__244`1<System.Net.HttpWebResponse>> (System.Net.HttpWebRequest/<RunWithTimeoutWorker>d__244`1<System.Net.HttpWebResponse>&)
       2        1       1086 System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1<bool>:GetTaskForResult (bool)
       2        0          1 System.Net.Configuration.DefaultProxySection:get_Proxy ()
       2        0          6 System.Net.IPAddress:Parse (string)
       2        1        120 System.ComponentModel.TypeDescriptor:CheckDefaultProvider (System.Type)
       2        1          3 System.Uri:PrivateParseMinimal ()
       2        1        279 System.Xml.XmlTextReaderImpl:ParseText ()
       2        0          2 System.Net.WebCompletionSource`1<T_REF>:WaitForCompletion ()
       2        0          1 System.Xml.XmlTextReaderImpl:InitStreamInput (System.IO.Stream,System.Text.Encoding)
       2        0         16 System.SecurityUtils:SecureCreateInstance (System.Type)
       2        0         58 System.ComponentModel.ReflectTypeDescriptionProvider:ReflectGetAttributes (System.Type)
       2        0          1 System.Net.WebOperation:GetRequestStreamInternal ()
       2        0          1 System.Net.Configuration.DefaultProxySectionInternal:GetSystemWebProxy ()
       2        0          1 System.Net.Sockets.Socket:.ctor (System.Net.Sockets.AddressFamily,System.Net.Sockets.SocketType,System.Net.Sockets.ProtocolType)
       2        1         16 System.SecurityUtils:SecureCreateInstance (System.Type,object[],bool)
       2        0        566 System.Xml.XmlTextReader:get_Value ()
       2        0         31 (wrapper runtime-invoke) object:runtime_invoke_void (object,intptr,intptr,intptr)
       2        0          7 System.Configuration.ConfigurationProperty:.ctor (string,System.Type)
       2        1          1 Mono.Net.CFNetwork:GetProxiesForURL (Mono.Net.CFUrl,Mono.Net.CFProxySettings)
       2        2          4 System.Uri:GetEscapedParts (System.UriComponents)
       2        0        413 System.Xml.XmlTextReaderImpl:AddAttribute (int,int)
       2        2          1 (wrapper managed-to-native) Mono.Net.CFNetwork:CFNetworkCopySystemProxySettings ()
       2        1          1 System.Xml.XmlTextReaderImpl:InitStreamInput (System.Uri,string,System.IO.Stream,byte[],int,System.Text.Encoding)
       2        0          1 System.Net.Configuration.ProxyElement:.cctor ()
       2        0          1 System.Net.WebProxy:CreateDefaultProxy ()
       2        0         16 System.Xml.XmlReader:CreateWriterForInnerOuterXml (System.IO.StringWriter)
       2        1          2 System.Platform:get_IsMacOS ()
       2        0          1 (wrapper remoting-invoke-with-check) System.IO.Stream/NullStream:.ctor ()
       2        0          1 System.Net.Configuration.SettingsSection:.cctor ()
       1        1          1 System.Xml.XmlTextReaderImpl:SwitchEncoding (System.Text.Encoding)
       1        1          8 System.Uri:EnsureParseRemaining ()
       1        1          1 System.Net.WebRequest:GetResponseAsync ()
       1        0        566 System.Xml.XmlTextReaderImpl:get_Value ()
       1        0          1 System.Net.IPEndPoint:Serialize ()
       1        0          2 System.Net.HttpWebRequest/<RunWithTimeoutWorker>d__244`1<T_REF>:MoveNext ()
       1        0         35 System.Xml.XmlCharType:get_Instance ()
       1        0          1 System.Net.Configuration.HttpWebRequestElement:.cctor ()
       1        0        740 System.Xml.XmlTextReaderImpl/NodeData:get_StringValue ()
       1        0         19 System.ComponentModel.AttributeCollection:get_Item (System.Type)
       1        0        662 (wrapper managed-to-managed) string:.ctor (char[],int,int)
       1        0          1 System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1<System.Threading.Tasks.VoidTaskResult>:SetException (System.Exception)
       1        0        348 System.Xml.XmlTextReader:ReadAttributeValue ()
       1        1          3 System.Net.IPAddressParser:Ipv6StringToAddress (System.ReadOnlySpan`1<char>,uint16*,int,uint&)
       1        0          8 System.Configuration.ConfigurationElementCollection:CreateNewElementInternal (string)
       1        0         17 System.Xml.XmlReader:ReadStartElement ()
       1        0        628 System.Xml.NameTable:Add (char[],int,int)
       1        0          1 System.Net.WebHeaderCollection:.cctor ()
       1        0          1 System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1<System.Net.WebRequestStream>:Start<System.Net.WebCompletionSource`1/<WaitForCompletion>d__15<System.Net.WebRequestStream>> (System.Net.WebCompletionSource`1/<WaitForCompletion>d__15<System.Net.WebRequestStream>&)
       1        0          3 System.Buffers.TlsOverPerCoreLockedStacksArrayPool`1<byte>:Gen2GcCallbackFunc (object)
       1        1       1566 System.Xml.XmlTextReader:get_NodeType ()
       1        0          1 System.Net.Sockets.Socket:SocketDefaults ()
       1        0          8 System.Net.Configuration.WebRequestModuleElementCollection:CreateNewElement ()
       1        1        113 (wrapper managed-to-native) object:__icall_wrapper_mono_monitor_enter_v4_internal (object,intptr)
       1        0          1 System.Net.SocketAddress:.ctor (System.Net.IPAddress,int)
       1        0          2 System.Net.ServicePointManager/SPKey:GetHashCode ()
       1        0          1 System.Net.WebConnection:CreateStream (System.Net.WebOperation,bool,System.Threading.CancellationToken)
       1        1        169 (wrapper managed-to-native) System.MonoCustomAttrs:GetCustomAttributesInternal (System.Reflection.ICustomAttributeProvider,System.Type,bool)
       1        0          2 System.Uri:get_Authority ()
       1        0          1 System.Net.Configuration.DefaultProxySection:.cctor ()
       1        0          2 System.Array:Sort<ulong, string> (ulong[],string[],System.Collections.Generic.IComparer`1<ulong>)
       1        0         79 System.Configuration.ConfigurationElement:get_ElementInformation ()
       1        0          2 System.Threading.Tasks.UnwrapPromise`1<System.Threading.Tasks.VoidTaskResult>:Invoke (System.Threading.Tasks.Task)
       1        0        142 System.Xml.XmlTextWriter:WriteWhitespace (string)
       1        0          1 System.Net.Configuration.WebRequestModuleElement:.cctor ()
       1        0          1 System.Xml.XmlCharType:InitInstance ()
       1        0          2 System.Uri:GetHashCode ()
       1        1       2973 System.Threading.Tasks.Task`1<int>:.ctor (int)
       1        0          1 System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1<bool>:Start<System.Net.WebConnection/<CreateStream>d__18> (System.Net.WebConnection/<CreateStream>d__18&)
       1        0          1 System.ComponentModel.TypeDescriptor:.cctor ()
       1        0          1 System.Net.TimerThread:.cctor ()
       1        0        888 System.Xml.XmlTextWriter:AutoComplete (System.Xml.XmlTextWriter/Token)
       1        0          1 System.Net.ServicePointScheduler/AsyncManualResetEvent:Set ()
       1        0          3 System.Xml.XmlTextReaderImpl:ParseDocumentContent ()
       1        0         96 System.Configuration.SectionGroupInfo:AddChild (System.Configuration.ConfigInfo)
       1        0          1 System.Net.ServicePoint:.ctor (System.Net.ServicePointManager/SPKey,System.Uri,int,int)
       1        0          2 System.Threading.Tasks.UnwrapPromise`1<System.Threading.Tasks.VoidTaskResult>:InvokeCore (System.Threading.Tasks.Task)
       1        0          1 System.Net.Sockets.Socket/<>c:<.cctor>b__318_4 (System.IOAsyncResult)
       1        0          1 System.Net.Sockets.Socket:Connect_internal (System.Net.Sockets.SafeSocketHandle,System.Net.SocketAddress,int&,bool)
       1        0          2 System.Array:Sort<ulong, string> (ulong[],string[],int,int,System.Collections.Generic.IComparer`1<ulong>)
       1        0          1 (wrapper remoting-invoke-with-check) System.Net.WebRequestStream:WriteRequestAsync (System.Threading.CancellationToken)
       1        1          1 (wrapper managed-to-native) System.Net.Dns:GetHostByName_internal (string,string&,string[]&,string[]&,int)
       1        0          1 Mono.Net.CFUrl:Create (string)
       1        0          3 System.Uri:ParseScheme (string,System.Uri/Flags&,System.UriParser&)
       1        0        348 System.Xml.XmlTextReaderImpl:ReadAttributeValue ()
       1        0          1 (wrapper remoting-invoke-with-check) System.Net.HttpWebResponse:.ctor (System.Uri,string,System.Net.WebResponseStream,System.Net.CookieContainer)
       1        0          3 System.Uri:CheckForUnicode (string)
       1        0          1 System.Net.SocketAddress:.ctor (System.Net.IPAddress)
       1        0        152 (wrapper managed-to-native) System.Runtime.InteropServices.Marshal:PtrToStructure (intptr,System.Type)
       1        0         19 System.SecurityUtils:SecureConstructorInvoke (System.Type,System.Type[],object[],bool)
       1        0          5 System.Configuration.ConfigurationSectionGroupCollection:get_Item (string)
       1        0          3 System.Net.Sockets.Socket:SetSocketOption (System.Net.Sockets.SocketOptionLevel,System.Net.Sockets.SocketOptionName,int)
       1        0          1 System.Diagnostics.BooleanSwitch:.ctor (string,string)
       1        0          1 System.Threading.Tasks.TaskFactory`1<System.Threading.Tasks.VoidTaskResult>:FromAsyncTrim<System.IO.Stream, System.IO.Stream/ReadWriteParameters> (System.IO.Stream,System.IO.Stream/ReadWriteParameters,System.Func`5<System.IO.Stream, System.IO.Stream/ReadWriteParameters, System.AsyncCallback, object, System.IAsyncResult>,System.Func`3<System.IO.Stream, System.IAsyncResult, System.Threading.Tasks.VoidTaskResult>)
       1        0        109 System.Xml.XmlTextWriter:WriteStartElement (string,string,string)
       1        0          8 System.Net.WebHeaderCollection:SetInternal (string,string)
       1        0          1 System.Net.WebRequestStream:WriteRequestAsync (System.Threading.CancellationToken)
       1        0        515 System.Xml.XmlTextReader:MoveToNextAttribute ()
       1        0         96 System.Configuration.ConfigInfoCollection:set_Item (string,System.Configuration.ConfigInfo)
       1        0          1 System.Net.Sockets.Socket:set_DontFragment (bool)
       1        1          4 System.Uri:ReCreateParts (System.UriComponents,uint16,System.UriFormat)
       1        0          1 System.Net.TimerThread:CreateQueue (int)
       1        0          3 System.Buffers.TlsOverPerCoreLockedStacksArrayPool`1<byte>:Trim ()
       1        1          7 System.UriHelper:UnescapeString (string,int,int,char[],int&,char,char,char,System.UnescapeMode,System.UriParser,bool)
       1        0         18 System.ComponentModel.AttributeCollection:GetDefaultAttribute (System.Type)
       1        0         19 System.SecurityUtils:SecureConstructorInvoke (System.Type,System.Type[],object[],bool,System.Reflection.BindingFlags)
       1        0          1 System.Configuration.InternalConfigurationSystem:Init (System.Type,object[])
       1        0          2 System.Uri:GetUnescapedParts (System.UriComponents,System.UriFormat)
       1        0          4 (wrapper runtime-invoke) object:runtime_invoke_void (object,intptr,intptr,intptr)
       1        0        184 System.Collections.Specialized.NameObjectCollectionBase:BaseAdd (string,object)
       1        0          1 (wrapper remoting-invoke-with-check) System.Net.WebRequestStream:.ctor (System.Net.WebConnection,System.Net.WebOperation,System.IO.Stream,System.Net.WebConnectionTunnel)
       1        0          1 System.Configuration.Configuration:GetSectionGroupInstance (System.Configuration.SectionGroupInfo)
       1        0          3 System.Uri:CheckAuthorityHelper (char*,uint16,uint16,System.ParsingError&,System.Uri/Flags&,System.UriParser,string&)
       1        0        110 System.Collections.Specialized.NameObjectCollectionBase:BaseSet (string,object)
       1        1          1 (wrapper managed-to-native) System.Globalization.CultureInfo:get_current_locale_name ()
Total calls: 17018724

Metadata summary
    Loaded images: 11
    Loaded assemblies: 6

Exception summary
    Throws: 5
    Executed catch clauses: 5
    Executed finally clauses: 850086

Thread summary
    Thread: 0x700005c66000, name: "Thread Pool Worker"
    Thread: 0x700005a63000, name: "Thread Pool I/O Selector"
    Thread: 0x700005860000, name: "Timer-Scheduler"
    Thread: 0x70000565d000, name: "Thread Pool Worker"
    Thread: 0x70000545a000, name: "Thread Pool Worker"
    Thread: 0x700004d4b000, name: ""
    Thread: 0x700005151000, name: "Thread Pool Worker"
    Thread: 0x700004f4e000, name: "Thread Pool Worker"
    Thread: 0x7000049bf000, name: "Profiler Sampler"
    Thread: 0x7000047bc000, name: "Finalizer"
    Thread: 0x113a585c0, name: "Main"
    Thread: 0x700004b48000, name: "Profiler Dumper"
    Thread: 0x700004a42000, name: "Profiler Helper"
    Thread: 0x700004ac5000, name: "Profiler Writer"

Domain summary
    Domain: 0x0, friendly name: "Program.exe"

Context summary
    Context: 0x0, domain: 0x0

Heap shot summary

    Heap shot 0 at 0.059 secs: size: 41070024, object count: 587, class count: 101, roots: 0
         Bytes      Count  Average Class name
      41031328          5  8206265 System.Byte[]
         23408        400       58 unresolved class 0x0
          1680          2      840 System.Collections.Generic.Dictionary.Entry<System.String,System.UriParser>[]
          1152         16       72 System.String[]
          1064          9      118 System.Int32[]
           640         16       40 System.UriParser.BuiltInUriParser
           576          1      576 System.Xml.XmlTextReaderImpl
           512          4      128 System.Collections.Hashtable.bucket[]
           512          2      256 System.Runtime.CompilerServices.Ephemeron[]
           392          8       49 System.Char[]
           384          3      128 System.Reflection.MemberFilter
           328          1      328 System.Xml.NameTable.Entry[]
           320          4       80 System.Collections.Hashtable
           256          1      256 System.Globalization.CultureInfo
           256          1      256 System.Globalization.NumberFormatInfo
           256          1      256 System.Globalization.CalendarData[]
           240          2      120 System.Configuration.Configuration
           200          1      200 System.Buffers.TlsOverPerCoreLockedStacksArrayPool.PerCoreLockedStacks<System.Byte>[]
           200          1      200 System.Buffers.TlsOverPerCoreLockedStacksArrayPool.PerCoreLockedStacks<System.Int32>[]
           200          1      200 System.AppDomainSetup
           200          1      200 System.Byte[][]
           192         12       16 System.Object
           168          3       56 System.Runtime.Serialization.SafeSerializationManager
           160          1      160 System.Xml.XmlTextReaderImpl.NodeData
           160          1      160 System.AppDomain
           160          1      160 System.Globalization.CultureData
           160          1      160 System.StackOverflowException
           160          1      160 System.Globalization.CalendarData
           160          1      160 System.NullReferenceException
           160          1      160 System.OutOfMemoryException

    Heap shot 1 at 37.179 secs: size: 57095136, object count: 215552, class count: 343, roots: 0
         Bytes      Count  Average Class name
      41037712         15  2735847 System.Byte[] (bytes: +6384, count: +10)
       3857792      30139      128 System.Threading.Tasks.Task.DelayPromise
       2411600      30145       80 System.Threading.Tasks.Task.ContingentProperties
       2411120      30139       80 System.Threading.Timer
       1929152      30143       64 System.Threading.CancellationTokenSource
       1929024      30141       64 System.Threading.CancellationCallbackInfo[]
       1446768      30141       48 System.Threading.CancellationCallbackInfo
       1446768      30141       48 System.Threading.SparselyPopulatedArrayFragment<System.Threading.CancellationCallbackInfo>
        262208          2   131104 System.Threading.Timer[]
        185808       2357       78 unresolved class 0x0 (bytes: +162400, count: +1957)
         29504         69      427 System.Collections.Hashtable.bucket[] (bytes: +28992, count: +65)
         13128        123      106 System.Char[] (bytes: +12736, count: +115)
          8000          1     8000 System.Globalization.InternalEncodingDataItem[]
          6800         85       80 System.Configuration.SectionInfo
          5888        184       32 System.Collections.Specialized.NameObjectCollectionBase.NameObjectEntry
          5528         70       78 System.Object[] (bytes: +5448, count: +68)
          5440         68       80 System.Collections.Hashtable (bytes: +5120, count: +64)
          5376         56       96 System.Reflection.RuntimePropertyInfo
          5040        105       48 Mono.Globalization.Unicode.Contraction
          4608         72       64 System.Configuration.PropertyInformation
          4264         26      164 System.Int32[] (bytes: +3200, count: +17)
          3280         82       40 System.Reflection.RuntimeMethodInfo
          3144         40       78 System.String[] (bytes: +1992, count: +24)
          2960         37       80 System.Configuration.ConfigurationProperty
          2928         75       39 System.Attribute[]
          2800         70       40 System.Collections.ArrayList (bytes: +2720, count: +68)
          2800         35       80 System.ComponentModel.ReflectTypeDescriptionProvider.ReflectedTypeData
          2560         32       80 System.Configuration.PropertyInformationCollection
          2432         19      128 System.ComponentModel.AttributeCollection.AttributeEntry[]
          2120         53       40 System.Net.HeaderInfo

    Heap shot 2 at 48.050 secs: size: 20796376, object count: 275695, class count: 345, roots: 0
         Bytes      Count  Average Class name
       4957440      38730      128 System.Threading.Tasks.Task.DelayPromise (bytes: +1099648, count: +8591)
       3098800      38735       80 System.Threading.Tasks.Task.ContingentProperties (bytes: +687200, count: +8590)
       3098400      38730       80 System.Threading.Timer (bytes: +687280, count: +8591)
       2478912      38733       64 System.Threading.CancellationTokenSource (bytes: +549760, count: +8590)
       2478848      38732       64 System.Threading.CancellationCallbackInfo[] (bytes: +549824, count: +8591)
       1859136      38732       48 System.Threading.CancellationCallbackInfo (bytes: +412368, count: +8591)
       1859136      38732       48 System.Threading.SparselyPopulatedArrayFragment<System.Threading.CancellationCallbackInfo> (bytes: +412368, count: +8591)
        524352          2   262176 System.Threading.Timer[] (bytes: +262144, count: +0)
        187104       2372       78 unresolved class 0x0 (bytes: +1296, count: +15)
         77680         14     5548 System.Byte[] (bytes: -40960032, count: -1)
         29504         69      427 System.Collections.Hashtable.bucket[] (bytes: +0, count: +0)
         13128        123      106 System.Char[] (bytes: +0, count: +0)
          8000          1     8000 System.Globalization.InternalEncodingDataItem[] (bytes: +0, count: +0)
          6800         85       80 System.Configuration.SectionInfo (bytes: +0, count: +0)
          5888        184       32 System.Collections.Specialized.NameObjectCollectionBase.NameObjectEntry (bytes: +0, count: +0)
          5528         70       78 System.Object[] (bytes: +0, count: +0)
          5440         68       80 System.Collections.Hashtable (bytes: +0, count: +0)
          5376         56       96 System.Reflection.RuntimePropertyInfo (bytes: +0, count: +0)
          5040        105       48 Mono.Globalization.Unicode.Contraction (bytes: +0, count: +0)
          4608         72       64 System.Configuration.PropertyInformation (bytes: +0, count: +0)
          4216         25      168 System.Int32[] (bytes: -48, count: -1)
          3360         84       40 System.Reflection.RuntimeMethodInfo (bytes: +80, count: +2)
          3112         39       79 System.String[] (bytes: -32, count: -1)
          2960         37       80 System.Configuration.ConfigurationProperty (bytes: +0, count: +0)
          2928         75       39 System.Attribute[] (bytes: +0, count: +0)
          2800         70       40 System.Collections.ArrayList (bytes: +0, count: +0)
          2800         35       80 System.ComponentModel.ReflectTypeDescriptionProvider.ReflectedTypeData (bytes: +0, count: +0)
          2560         32       80 System.Configuration.PropertyInformationCollection (bytes: +0, count: +0)
          2432         19      128 System.ComponentModel.AttributeCollection.AttributeEntry[] (bytes: +0, count: +0)
          2120         53       40 System.Net.HeaderInfo (bytes: +0, count: +0)

Counters:
    Mono System:
        User Time                      : 93621.615ms
        System Time                    : 57484.400ms
        Total Time                     : 151106.081ms
        Working Set                    : 70492160
        Private Bytes                  : 52609024
        Virtual Bytes                  : 1110384640
        Page Faults                    : 0
        CPU Load Average - 1min        : 4.664551
        CPU Load Average - 5min        : 2.745605
        CPU Load Average - 15min       : 2.180176
    Mono JIT:
        Methods from AOT               : 1277
        Methods JITted using mono JIT  : 1618
        Methods JITted using LLVM      : 0
baulig commented 5 years ago

The above was with

using System;
using System.IO;
using System.Net;
using System.Net.Sockets;
using System.Net.Security;

class X
{
    static void Main ()
    {
        byte[] buffer = new byte[40960000];
        WebRequest wr = WebRequest.Create ("http://cdimage.ubuntu.com/releases/18.04.2/release/ubuntu-18.04.2-server-amd64.iso");
        WebResponse wresp = wr.GetResponse ();
        using (var respstream = wresp.GetResponseStream ()) {
            int readed = 0;
            do {
                readed = respstream.Read (buffer, 0, buffer.Length);
            } while (readed > 0);
        }
    }
}
pr0vieh commented 5 years ago

If you For example, have 200 worker threads and execute one web request at a time. The asynchronization of the webstack creates so many additional threads that Linux dies.

Is there a way to disable the asynchronization in the webstack?