[GitHub] [kafka] jasonk000 commented on pull request #11722: KAFKA-13630: reduce amount of time that producer network thread holds batch queue lock

[GitBox]

jasonk000 commented on pull request #11722:
URL: https://github.com/apache/kafka/pull/11722#issuecomment-1026000556


   This application has a single producer thread, a high `send()` rate. The 
change reduces spinlock CPU cycles from 14.6% to 2.5% of the `send()` path, or 
more clearly a 12.1% improvement in efficiency for the `send()` path by 
reducing the duration of contention events with the network thread.
   
   Before, with `*complete_monitor*` highlighted:
   
![image](https://user-images.githubusercontent.com/3196528/151838273-042e5220-a637-49c8-9772-f4fcfd0bde0f.png)
   
   After, with `*complete_monitor*` highlighted:
   
![image](https://user-images.githubusercontent.com/3196528/151838343-6476e628-4012-40e3-b1e8-504ecadcef01.png)
   


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