[I] brpc压测，主机CPU压不满 (brpc)

via GitHub Mon, 07 Aug 2023 00:31:50 -0700


zzjshaok opened a new issue, #2347:
URL: https://github.com/apache/brpc/issues/2347


   **Describe the bug (描述bug)**
   brpc/example/multi_threaded_echo_c++ 
启动brpc服务端，启动brpc客户端进行压测，thread_num为200，在同一台主机上启动多个客户端，系统CPU始终占不完，top命令查看，最多只能占用到85%左右，还有10%+的idle.
  
server进程的CPU占用在1700%左右。如果启动两个server，一个监听8002端口，一个监听8003端口，在同一台主机上分别启动多个客户端对这两个server进行压测，加大压力，系统CPU还是只能占到85%左右，此时两个server进程的CPU占用合起来在1700%左右。看起来像是rpc服务端受到什么系统资源的限制，压测时无法占满主机的CPU，调整client.cpp中的attachment_size和request_size大小还是如此，压测无法将主机CPU资源占满
   
   **To Reproduce (复现方法)**
   见 (描述bug)
   
   **Expected behavior (期望行为)**
   同一台主机，加大客户端压力，可以压满主机的CPU；或者启动不同的rpc服务端，分别进行压测，可以压满主机的CPU
   
   **Versions (各种版本)**
   OS: Linux optane152 
   Compiler: gcc version 8.3.0 (GCC)
   brpc: 当前git上最新版本的代码
   protobuf:
   
   **Additional context/screenshots (更多上下文/截图)**
   
   
![image](https://github.com/apache/brpc/assets/39356300/e432b7ab-ed27-4df2-a839-b2a859a0e40c)
   
   
   


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[I] brpc压测，主机CPU压不满 (brpc)

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