[jira] [Updated] (PROTON-586) 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/PROTON-586?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Justin Ross updated PROTON-586:
-------------------------------
    Assignee: Alan Conway

> Driver spins when a listener accepts a socket while FDs are all in use
> ----------------------------------------------------------------------
>
>                 Key: PROTON-586
>                 URL: https://issues.apache.org/jira/browse/PROTON-586
>             Project: Qpid Proton
>          Issue Type: Bug
>          Components: proton-c
>    Affects Versions: 0.7
>            Reporter: Ted Ross
>            Assignee: Alan Conway
>
> 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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