[GitHub] [camel-kafka-connector] orpiske commented on issue #414: High CPU Usage with RabbitMQ Connector (polling interface implemented incorrectly?)

[GitBox]

orpiske commented on issue #414:
URL: 
https://github.com/apache/camel-kafka-connector/issues/414#issuecomment-687322786


   Today I did play a bit with this and I think we may have some room to 
improve the CamelSourceTask.
   
   I adjusted the code a little bit and managed to reduce both the CPU usage 
(from ~9% to ~0.4% on this computer), GC allocations and heap usage (from 
~350Mb to ~290Mb) while idle. 
   
   Before:
   <img width="1393" alt="before" 
src="https://user-images.githubusercontent.com/1851560/92276029-8b02ce00-eef0-11ea-88b7-1d5a2efad503.png";>
   
   After:
   <img width="1399" alt="after" 
src="https://user-images.githubusercontent.com/1851560/92276050-8fc78200-eef0-11ea-92ea-a5e420103e79.png";>
   
   With the change, the [code spends far less 
time](http://angusyoung.org/arquivos/tmp/profile-modified.svg) in the 
CamelTask.poll() than the [current one we 
have](http://angusyoung.org/arquivos/tmp/profile-current.svg).
   
   Of course, this is just an initial **proof of concept**. Although it passes 
through all the tests, we need to do more serious testing, reviews, cleanups, 
etc ... but it looks there's something we can do here.
   


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