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Posted to dev@qpid.apache.org by "Ganesh Murthy (JIRA)" <ji...@apache.org> on 2019/05/30 13:02:00 UTC
[jira] [Assigned] (DISPATCH-1348) Save qdr_error_t allocation if
not necessary
[ https://issues.apache.org/jira/browse/DISPATCH-1348?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Ganesh Murthy reassigned DISPATCH-1348:
---------------------------------------
Assignee: Ganesh Murthy
> Save qdr_error_t allocation if not necessary
> --------------------------------------------
>
> Key: DISPATCH-1348
> URL: https://issues.apache.org/jira/browse/DISPATCH-1348
> Project: Qpid Dispatch
> Issue Type: Improvement
> Components: Routing Engine
> Affects Versions: 1.7.0
> Reporter: Francesco Nigro
> Assignee: Ganesh Murthy
> Priority: Major
>
> qdr_error_from_pn on error.c is allocating qdr_error_t on the hot path ie AMQP_disposition_handler: saving those allocations would reduce CPU usage (and cache misses) on both core and worker threads, making the router able to scale better while under load.
> Initial tests has shown some improvements under load (ie with core CPU thread ~97% with the new version and ~99% with master):
> 5 pairs with master - 490 K msg/sec
> 5 pairs with new version - 530 K msg/sec
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