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Posted to dev@qpid.apache.org by "Ganesh Murthy (Jira)" <ji...@apache.org> on 2019/09/17 20:21:00 UTC
[jira] [Updated] (DISPATCH-1342) Replaced mutex with spin lock on
qd_message content
[ https://issues.apache.org/jira/browse/DISPATCH-1342?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Ganesh Murthy updated DISPATCH-1342:
------------------------------------
Labels: performance (was: )
> Replaced mutex with spin lock on qd_message content
> ---------------------------------------------------
>
> Key: DISPATCH-1342
> URL: https://issues.apache.org/jira/browse/DISPATCH-1342
> Project: Qpid Dispatch
> Issue Type: Improvement
> Components: Routing Engine
> Affects Versions: 1.7.0
> Reporter: Francesco Nigro
> Priority: Minor
> Labels: performance
>
> Given that qd_message creation and qd_message_free involves sys_mutex allocation/free and they are OS resources too, using spin locks will reduce the CPU/memory usage while performing such frequent operations.
> In addition it would make the router more reactive and resilient to OS thread scheduling while message->content is being concurrently accessed too, given that such accesses are meant to not last long and there is no need to involve OS arbitration to park/awake threads,
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