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Posted to commits@servicecomb.apache.org by GitBox <gi...@apache.org> on 2021/06/23 02:51:20 UTC

[GitHub] [servicecomb-java-chassis] wujimin commented on issue #2429: 有2个provider，当某个provider出现网络时延时，2个provider的吞吐量都下降了，是什么机制导致的吗？

wujimin commented on issue #2429:
URL: https://github.com/apache/servicecomb-java-chassis/issues/2429#issuecomment-866480720


   ```
   jmeter -> consumer -> provider 1/2
   ```
   如果是这个流程  
   consumer首先是一个provider，默认使用一个共享线程池处理所有请求  
   收到请求后，再   **同步**   调用后面的provider，此时会阻塞当前线程等待provider应答，这个“当前线程”，就是共享线程池里的线程  
   所以，某个provider慢，会影响整体速度  
   
   所有的同步调用，都会面临这种问题，要彻底解决，业务需要从同步改为异步方式调用后面的provider
   


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