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assistd / scrcpy

Apache License 2.0
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scrcpy申请系统内存失败 #7

Closed HEZI0427 closed 1 year ago

HEZI0427 commented 1 year ago

现象：

企业微信截图_6ac41d9f-92b9-4a3f-8f3f-413b1f9c2c24
HEZI0427 commented 1 year ago

分析： 获取 scrcpy 运行pid

root@VM-46-13-centos:/data# adb -s 10.80.50.103:5555 shell ps -ef| grep 'udt-scrcpy-server'
shell         9659   403 0 10:42:44 ?     00:00:00 sh -c  CLASSPATH=/data/local/tmp/udt/udt-scrcpy-server.jar app_process / com.genymobile.scrcpy.Server 1.24 max_size=1080 bit_rate=1000000 max_fps=25 tunnel_forward=true rotation_autosync=true  udt_socket_name=udt-scrcpy-server codec_options=duration=2
shell         9661  9659 1 10:42:44 ?     00:01:09 udt-scrcpy-server

查看当前占用(99M)

WeTestC2:/ # dumpsys meminfo 9661                                                                                                                                                      
Applications Memory Usage (in Kilobytes):
Uptime: 139286007 Realtime: 139286007
                   Pss  Private  Private     Swap     Heap     Heap     Heap
                 Total    Dirty    Clean    Dirty     Size    Alloc     Free
                ------   ------   ------   ------   ------   ------   ------
  Native Heap     8036     8036        0        0        0        0        0
  Dalvik Heap    64492    64492        0        0        0        0        0
 Dalvik Other      752      752        0        0                           
        Stack       40       40        0        0                           
       Ashmem      106        0        0        0                           
    Other dev       24        0       24        0                           
     .so mmap     7084     4116      448        0                           
    .jar mmap     1106        0       16        0                           
    .dex mmap      229      228        0        0                           
    .oat mmap      497       76        0        0                           
    .art mmap    14713    14708        0        0                           
   Other mmap      364       68        0        0                           
      Unknown     2188     2188        0        0                           
        TOTAL    99631    94704      488        0        0        0        0

 App Summary
                       Pss(KB)
                        ------
           Java Heap:    79200
         Native Heap:     8036
                Code:     4884
               Stack:       40
            Graphics:        0
       Private Other:     3032
              System:     4439

               TOTAL:    99631      TOTAL SWAP (KB):        0

第一次启动时内存占用(37M)

Applications Memory Usage (in Kilobytes):
Uptime: 140998266 Realtime: 140998266
                   Pss  Private  Private     Swap     Heap     Heap     Heap
                 Total    Dirty    Clean    Dirty     Size    Alloc     Free
                ------   ------   ------   ------   ------   ------   ------
  Native Heap     5164     5164        0        0        0        0        0
  Dalvik Heap     5900     5900        0        0        0        0        0
 Dalvik Other      584      584        0        0
        Stack       40       40        0        0
       Ashmem      202        0        0        0
    Other dev       16        0       16        0
     .so mmap     7140     4124      496        0
    .jar mmap     1272        0       44        0
    .dex mmap      232      232        0        0
    .oat mmap      459       76        0        0
    .art mmap    14737    14708       12        0
   Other mmap      385       60        0        0
      Unknown     1728     1728        0        0
        TOTAL    37859    32616      568        0        0        0        0

存在内存泄露

HEZI0427 commented 1 year ago

分析2: 需要实时dump scrcpy程序内存占用 方案一：无需添加代码，但需要Android应用包名，scrcpy程序不支持此方法 https://juejin.cn/post/6844904080691691533

方案二：在scrcpy中添加dump代码

android.os.Debug.dumpHprofData("/sdcard/data.hprof");

此时获取的hprof无法被MAT直接使用，需要转换，

<AndroidSDK>/platform-tools/hprof-conv data.hprof data-android.hprof

通过MAT打开转换后的hprof文件

image

data-2023-54-14-12-54-17-android.hprof.zip

HEZI0427 commented 1 year ago

分析3: org.libjpegturbo.turbojpeg.TJCompressor 为例，查看泄漏堆栈

image image image image

初步确定内线程内持有外部类对象没有及时释放

HEZI0427 commented 1 year ago

分析5: 测试2小时（10次），测试结束后，内存维持在37M左右

WeTestC2:/sdcard # dumpsys meminfo 29691
Applications Memory Usage (in Kilobytes):
Uptime: 142712995 Realtime: 142712995
                   Pss  Private  Private     Swap     Heap     Heap     Heap
                 Total    Dirty    Clean    Dirty     Size    Alloc     Free
                ------   ------   ------   ------   ------   ------   ------
  Native Heap     6076     6076        0        0        0        0        0
  Dalvik Heap     4328     4328        0        0        0        0        0
 Dalvik Other      484      484        0        0
        Stack       40       40        0        0
    Other dev       17        0       16        0
     .so mmap     7721     4124      524        0
    .jar mmap     1489        0       36        0
    .dex mmap      232      232        0        0
    .oat mmap      524       76        0        0
    .art mmap    14739    14708       16        0
   Other mmap      442       68        0        0
      Unknown     1732     1732        0        0
        TOTAL    37824    31868      592        0        0        0        0
image image

无设计之外重复大内存对象