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https://issues.apache.org/jira/browse/DISPATCH-1281?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16789918#comment-16789918
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ASF subversion and git services commented on DISPATCH-1281:
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Commit e87577bb401490800716fd482d0b9eaf169d2fae in qpid-dispatch's branch
refs/heads/master from Ted Ross
[ https://gitbox.apache.org/repos/asf?p=qpid-dispatch.git;h=e87577b ]
DISPATCH-1281 - Batch the cleanup of freed messages so they share a single unit
of general-work per core-thread action sweep.
This closes #457
> Performance - Batch the freeing of messages from the core thread
> ----------------------------------------------------------------
>
> Key: DISPATCH-1281
> URL: https://issues.apache.org/jira/browse/DISPATCH-1281
> Project: Qpid Dispatch
> Issue Type: Improvement
> Components: Router Node
> Reporter: Ted Ross
> Assignee: Ted Ross
> Priority: Major
> Fix For: 1.6.0
>
>
> Profiling has identified a disproportionate amount of core-thread time being
> spent in qdr_delete_delivery_internal_CT. This is due to the fact that every
> in-core delivery-free results in the posting of one unit of general work
> (work to be performed by an I/O thread without any association with a
> particular connection).
> This improvement batches the freed messages to be handled at one time, with
> one unit of general work, at the end of the processing of each set of
> core-thread actions.
> The result is a greater degree of batching of message-cleanups when the core
> thread is busier. This will free up core-thread CPU capacity for when the
> router is the busiest.
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