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Posted to dev@qpid.apache.org by "ASF subversion and git services (Jira)" <ji...@apache.org> on 2020/11/08 20:03:00 UTC

[jira] [Commented] (PROTON-1496) C epoll proactor needs better timer implementation for connections

    [ https://issues.apache.org/jira/browse/PROTON-1496?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17228278#comment-17228278 ] 

ASF subversion and git services commented on PROTON-1496:
---------------------------------------------------------

Commit d31ad9652a1a63f856ed10772e362b4a155ecbf4 in qpid-proton's branch refs/heads/master from Clifford Jansen
[ https://gitbox.apache.org/repos/asf?p=qpid-proton.git;h=d31ad96 ]

PROTON-1496: epoll proactor - improved timers implementation with single timerfd kernel resource


> C epoll proactor needs better timer implementation for connections
> ------------------------------------------------------------------
>
>                 Key: PROTON-1496
>                 URL: https://issues.apache.org/jira/browse/PROTON-1496
>             Project: Qpid Proton
>          Issue Type: Improvement
>          Components: proton-c
>    Affects Versions: proton-c-0.18.0
>         Environment: Linux environments with epoll support
>            Reporter: Clifford Jansen
>            Assignee: Clifford Jansen
>            Priority: Major
>
> The epoll proactor allocates a timerfd per connection.  This is a convenience for the initial implementation and may surprise some applications running into system limits on file descriptors twice as fast as expected.
> The timer is used for heartbeats.  It should be possible to write a per-proactor heartbeat timer that is shared among the connections



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