[Perf] Windows/x64: 2 Regressions on 10/31/2024 11:13:01 AM

Run Information

Name	Value
Architecture	x64
OS	Windows 10.0.22631
Queue	ViperWindows
Baseline	fe3dcc541a9fbf01a8f9807a956c77b50bb38e81
Compare	987f6b5c9e638ef921c71a530532f147788300c4
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Regressions in System.IO.Tests.Perf_FileStream

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio
[ReadByte - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.22631/ViperWindows/System.IO.Tests.Perf_FileStream.ReadByte(fileSize%3a%201024%2c%20options%3a%20None).html>) 📝 - Benchmark Source ADX - Test Multi Config Graph	13.65 μs	14.88 μs	1.09	0.10	False
[Read - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.22631/ViperWindows/System.IO.Tests.Perf_FileStream.Read(fileSize%3a%201024%2c%20userBufferSize%3a%201024%2c%20options%3a%20None).html>) 📝 - Benchmark Source ADX - Test Multi Config Graph	12.96 μs	13.73 μs	1.06	0.11	False

graph graph Test Report

Repro

General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.IO.Tests.Perf_FileStream*'

### System.IO.Tests.Perf_FileStream.ReadByte(fileSize: 1024, options: None) #### ETL Files #### Histogram #### JIT Disasms ### System.IO.Tests.Perf_FileStream.Read(fileSize: 1024, userBufferSize: 1024, options: None) #### ETL Files #### Histogram #### JIT Disasms ### Docs [Profiling workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/profiling-workflow-dotnet-runtime.md) [Benchmarking workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/benchmarking-workflow-dotnet-runtime.md)

dotnet / perf-autofiling-issues