[jira] [Moved] (DISPATCH-571) Driver spins when a listener accepts a socket while FDs are all in use

["Justin Ross (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/DISPATCH-571?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Justin Ross moved PROTON-586 to DISPATCH-571:
---------------------------------------------

        Fix Version/s:     (was: 0.16.0)
                       0.8.0
    Affects Version/s:     (was: 0.7)
          Component/s:     (was: proton-c)
                       Container
             Workflow: QPid Workflow  (was: classic default workflow)
                  Key: DISPATCH-571  (was: PROTON-586)
              Project: Qpid Dispatch  (was: Qpid Proton)

> Driver spins when a listener accepts a socket while FDs are all in use
> ----------------------------------------------------------------------
>
>                 Key: DISPATCH-571
>                 URL: https://issues.apache.org/jira/browse/DISPATCH-571
>             Project: Qpid Dispatch
>          Issue Type: Bug
>          Components: Container
>            Reporter: Ted Ross
>            Assignee: Alan Conway
>             Fix For: 0.8.0
>
>
> when operating as a server and using listeners, if the number of open FDs is equal to the limit on FDs, accept will return an error and the driver will spin at 100% cpu until an FD is freed up for the incoming connection.
> Suggested fix:
> If "accept" returns a "too many open files" error (ENFILE or EMFILE), the listening socket should be taken out of the read-fds for a time (say one second) before retrying.
> If this is not practical to do in Proton, the driver should provide hooks for the encapsulating application to use to provide this holdoff.



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