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https://issues.apache.org/jira/browse/HBASE-16890?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15610351#comment-15610351
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Duo Zhang commented on HBASE-16890:
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I have some ideas on reducing the contentions in append and sync by using the
RingBuffer in disruptor without introducing a new thread. Will prepare a patch
when I have time. We can test it along with ram's patch to see which one is
better.
> Analyze the performance of AsyncWAL and fix the same
> ----------------------------------------------------
>
> Key: HBASE-16890
> URL: https://issues.apache.org/jira/browse/HBASE-16890
> Project: HBase
> Issue Type: Sub-task
> Components: wal
> Affects Versions: 2.0.0
> Reporter: ramkrishna.s.vasudevan
> Assignee: ramkrishna.s.vasudevan
> Fix For: 2.0.0
>
> Attachments: Screen Shot 2016-10-25 at 7.34.47 PM.png, Screen Shot
> 2016-10-25 at 7.39.07 PM.png, Screen Shot 2016-10-25 at 7.39.48 PM.png,
> async.svg, classic.svg, contention.png, contention_defaultWAL.png
>
>
> Tests reveal that AsyncWAL under load in single node cluster performs slower
> than the Default WAL. This task is to analyze and see if we could fix it.
> See some discussions in the tail of JIRA HBASE-15536.
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