[jira] [Created] (PROTON-1408) long-lived connections suffer large performance hit after many messages

["michael goulish (JIRA)" <ji...@apache.org>]

michael goulish created PROTON-1408:
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             Summary: long-lived connections suffer large performance hit after many messages
                 Key: PROTON-1408
                 URL: https://issues.apache.org/jira/browse/PROTON-1408
             Project: Qpid Proton
          Issue Type: Bug
          Components: proton-c
            Reporter: michael goulish


In long-running soak tests, in which connections are never taken down, I am seeing a sudden & severe performance degradation when the number of messages over the connection reaches about 6.4 billion.  

This is happening in tests with two senders, two receivers & one router intermediating.  

I have tried C libUV clients as well as CPP clients.  Behavior is not identical, but I see sudden performance drop, ie. 8x throughput decrease or worse, in both cases.

Alan / Ted / Ken see an issue in use of improper comparison logic in pn_do_disposition(), in transport.c  .     I am trying to prove this now.




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