[GitHub] [pulsar] BewareMyPower commented on pull request #13023: Fix consume message order issue when use listener.

[GitBox <gi...@apache.org>]

BewareMyPower commented on PR #13023:
URL: https://github.com/apache/pulsar/pull/13023#issuecomment-1090045572

   I've verified the performance regression introduced by this PR. It's a really serious bug if we're using `MessageListener`. The affected Pulsar versions are:
   - 2.8.3 and later
   - 2.9.1 and later
   - 2.10.0 and later
   
   From my test, the consumer throughput is limited to at most 50+ MiB/s for single partition, even if the producer rate was downgraded to only 200 MiB/s. Here are my test results for the case that **only 1 partition** is used.
   
   ### Max throughput (10000 MB/s produce rate)
   
   <img width="1251" alt="image" src="https://user-images.githubusercontent.com/18204803/161939524-ea2d7867-ef5d-4353-b54c-32a2b8af899c.png">
   
   <img width="1240" alt="image" src="https://user-images.githubusercontent.com/18204803/161939607-f4137e7b-8acd-4bb5-a515-bba12f5d28ac.png">
   
   ### 200 MB/s produce rate
   
   <img width="1245" alt="image" src="https://user-images.githubusercontent.com/18204803/161941047-ca29e34b-9545-4e7f-9cf9-6fff4fd5e481.png">
   
   <img width="1253" alt="image" src="https://user-images.githubusercontent.com/18204803/161941127-82393457-c482-4592-b5a9-c686228610a0.png">
   
   /cc @merlimat @codelipenghui @dave2wave @Jason918 @eolivelli 


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