yasio - socket库性能测试报告，遇到一些坑，记录下

Devices:

• Windows 10: Intel® Core™ i7-9700 CPU @ 3.00GHz / Windows 10(10.0.19041.264)
• Linux: Intel® Xeon® Platinum 8163 CPU @ 2.50GHz / Ubuntu 20.04 (Single Core CPU)
• macOS: Intel® Core™ i7-8850H CPU @ 2.60GHz / macOS 10.15.4
• Android: XIAOMI MIX2S (cocos2d-x game engine cpp-tests)

Test Code: speedtest

Architecture:

• PC: X64
• Android: armv7a

Compiling:

• Windows: VS2019 MSVC 14.25.28610
  Optimize Flag: /O2
  Commands:
  • mkdir build/build_w64
  • cd build/build_w64
  • cmake …/…/
  • cmake --build . --config Release --target speedtest
• Linux: gcc version 9.3.0 (Ubuntu 9.3.0-10ubuntu2)
  Optimize Flag: /O3
  Commands:
  • mkdir -p build/build_linux
  • cd build/build_linux
  • cmake …/…/ -DCMAKE_BUILD_TYPE=Release
  • cmake --build . --config Release --target speedtest
• macOS 10.15.4: Apple Clang 11.0.0 Release build

Send Parameters:

• Total Time: 10(s)
• KCP Send Interval: 10(us)
• Send Bytes Per Time: 62KB

Results:

• TCP speed:
  • Windows: 22.4Gbits/s+
    • libuv: 22.4Gbits/s+
  • macOS: 29.9Gbits/s
  • Ubuntu 20.04 On Aliyun: 18.4Gbits/s
  • Android 10(MI MIX2S): 480Mbits/s
• UDP speed:
  • Windows: 22.4Gbits/s
  • macOS: send=35.5Gbits/s, recv=25.8Gbits/s, lost=9.7Gbits/s
  • Ubuntu 20.04 On Aliyun: 20.8Gbits/s
  • Android 10(MI MIX2S): 488Mbits/s
• KCP speed:
  • Windows: 11.0Gbits/s
  • macOS: 21.0Gbits/s
  • Ubuntu 20.04 On Aliyun: 2.3~5.3Gbits/s, because it’s Single Core CPU, so speed not stable
  • Android 10(MI MIX2S): 184Mbits/s (kcp.send.internval=1ms)

注意事项

• 多核CPU，当 io_service任务饱和时可将 wait_duration设置为0，以便事件循环在下次tick立刻执行任务
• 单核CPU，当 io_service任务饱和时至少要给一定的 wait_duration到socket.select，详见提交记录，以防止占满CPU降低整体传输性能，例如阿里云单核CPU服务器，最早测试用例里将 kcp.interval设置成了0，传输性能很低，只有40Mbits/s，后来保持 kcp.interval=10ms，同时将发包间隔降低为100us，传输性能提高到1.9Gbit/s
• Android CPU相对PC比较弱，因此UDP/TCP传输速率均在480Mbits/s左右