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https://issues.apache.org/jira/browse/DISPATCH-571?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16033419#comment-16033419
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Alan Conway commented on DISPATCH-571:
--------------------------------------
This can be solved without a time out if we handle the ENFILE/EMFILE errors
properly in the proactor (PROTON-1495). The router should reject connections as
long as it has no FDs and resume normal operation when some existing FDs are
closed.
> 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: 1.0.0
>
>
> 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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