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https://issues.apache.org/jira/browse/ARTEMIS-2239?focusedWorklogId=197538&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-197538
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ASF GitHub Bot logged work on ARTEMIS-2239:
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Author: ASF GitHub Bot
Created on: 12/Feb/19 12:31
Start Date: 12/Feb/19 12:31
Worklog Time Spent: 10m
Work Description: franz1981 commented on issue #2522: ARTEMIS-2239
Zero-copy NIO/MAPPED TimedBuffer
URL: https://github.com/apache/activemq-artemis/pull/2522#issuecomment-462741716
This one should be kinda independent from the rest so can be merged without
worrying about any conflicts, thanks!!!
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Issue Time Tracking
-------------------
Worklog Id: (was: 197538)
Time Spent: 5h 40m (was: 5.5h)
> Zero-copy NIO/MAPPED TimedBuffer
> --------------------------------
>
> Key: ARTEMIS-2239
> URL: https://issues.apache.org/jira/browse/ARTEMIS-2239
> Project: ActiveMQ Artemis
> Issue Type: Improvement
> Components: Broker
> Affects Versions: 2.6.4
> Reporter: Francesco Nigro
> Assignee: Francesco Nigro
> Priority: Major
> Time Spent: 5h 40m
> Remaining Estimate: 0h
>
> NIO/MAPPED journal types are currently performing the copy of the buffer used
> on TimedBuffer to accumulate writes, but this copy (and the zeroing of the
> new buffer) could be avoided, reducing dramatically the CPU usage and
> latencies during a burst of writes.
> An added benefit of this change is that isn't necessary anymore to stress the
> thread pool of the file factory, because there is no need to pool the buffer
> used to perform the write.
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