You are viewing a plain text version of this content. The canonical link for it is here.
Posted to dev@qpid.apache.org by "Andrew Stitcher (Jira)" <ji...@apache.org> on 2022/07/12 08:58:00 UTC
[jira] [Commented] (PROTON-2573) Proton in endless yielding loop
[ https://issues.apache.org/jira/browse/PROTON-2573?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17565377#comment-17565377 ]
Andrew Stitcher commented on PROTON-2573:
-----------------------------------------
I'm not sure there is very much to go on here - the debug output is exactly what you expect for the event loop waiting for an event that is never going to happen as there is a break from the loop every 3s or so (actually pi seconds for some bizarre reason!)
The fact that the event loop is still running implies that there is no tight loop happening that starves the event loop. though.
> Proton in endless yielding loop
> -------------------------------
>
> Key: PROTON-2573
> URL: https://issues.apache.org/jira/browse/PROTON-2573
> Project: Qpid Proton
> Issue Type: Bug
> Affects Versions: proton-c-0.37.0
> Environment: centos 7
> Reporter: AndyG
> Priority: Major
>
> I'm using the python wrapper and have seen this behaviour a number of times but don't know what precipitates it.
> Symptoms are 100% cpu usage and a tcp connection status to 2 (send and receive) C qpid brokers in "close_wait" (the broker has timed out the connection due to a lack of heartbeat from the client)
> It had, on startup, successfully connected to the broker but sometime later lost the connection. Scheduled tasks (_timers in _reactor.py) are not running (presumably starved by a tight loop in the process code)
> On turning on debug logging it repeats (endlessly)
> *[DEBUG] <proton._reactor.Container object at 0x7fc91cf93310> Yielding*
> (presumably from line 251 of _reactor.py)
>
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscribe@qpid.apache.org
For additional commands, e-mail: dev-help@qpid.apache.org