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

["Alan Conway (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/PROTON-1408?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Alan Conway reassigned PROTON-1408:
-----------------------------------

    Assignee: Alan Conway

> 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
>            Assignee: Alan Conway
>
> 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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