[GitHub] [kafka] mumrah commented on pull request #9008: KAFKA-9629 Use generated protocol for Fetch API

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mumrah commented on pull request #9008:
URL: https://github.com/apache/kafka/pull/9008#issuecomment-665795947


   I ran a console consumer perf test (at @hachikuji's suggestion) and took a 
profile. 
   
   
![image](https://user-images.githubusercontent.com/55116/88832229-81be6d00-d19e-11ea-9ee9-51b6054a6731.png)
   
   Zoomed in a bit on the records part:
   
   
![image](https://user-images.githubusercontent.com/55116/88832276-93a01000-d19e-11ea-9293-a138c38f6ed3.png)
   
   This was with only a handful of partitions on a single broker (on my 
laptop), but it confirms that the new FetchResponse serialization is hitting 
the same sendfile path as the previous code.
   
   


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