[GitHub] [brpc] Tuvie opened a new pull request, #2100: Reduce cpu overhead when using rdma

["Tuvie (via GitHub)" <gi...@apache.org>]

Tuvie opened a new pull request, #2100:
URL: https://github.com/apache/brpc/pull/2100

   ### What problem does this PR solve?
   
   Issue Number:
   
   Problem Summary: 
   1. In performance test, using rdma may cost more cpu than TCP because of more bthreads.
   2. In a very rare case, the ibv_post_send operation may fail because of full SQ.
   
   ### What is changed and the side effects?
   
   Changed: 
   1. Reduce the bthread_flush called.
   2. Introduce redundant SQ size to avoid SQ overflow caused by unsignaled WQE.
   
   Side effects:
   - Performance effects(性能影响):  CPU overhead will be reduced in rdma_performance.
   
   - Breaking backward compatibility(向后兼容性): None
   
   ---
   ### Check List:
   - Please make sure your changes are compilable(请确保你的更改可以通过编译).
   - When providing us with a new feature, it is best to add related tests(如果你向我们增加一个新的功能, 请添加相关测试).
   - Please follow [Contributor Covenant Code of Conduct](../../master/CODE_OF_CONDUCT.md).(请遵循贡献者准则).
   


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[GitHub] [brpc] wwbmmm merged pull request #2100: Reduce cpu overhead when using rdma

["wwbmmm (via GitHub)" <gi...@apache.org>]

wwbmmm merged PR #2100:
URL: https://github.com/apache/brpc/pull/2100


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