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From "Duo Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-16890) Analyze the performance of AsyncWAL and fix the same
Date Fri, 04 Nov 2016 08:40:58 GMT

    [ https://issues.apache.org/jira/browse/HBASE-16890?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15635680#comment-15635680
] 

Duo Zhang commented on HBASE-16890:
-----------------------------------

Can you try the latest patch to see if it performs better? HBASE-16890-rc-v3.patch.

I just tested with it and your disruptor_4.

{noformat}
AsyncFSWAL-duo: Min: 83736ms Max: 98340ms Avg: 94915ms
AsyncFSWAL-ram: Min: 101365ms Max: 112375ms Avg: 109306ms
{noformat}

Let me test again to confirm.

> 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: AsyncWAL_disruptor.patch, AsyncWAL_disruptor_1 (2).patch, AsyncWAL_disruptor_3.patch,
AsyncWAL_disruptor_3.patch, AsyncWAL_disruptor_4.patch, HBASE-16890-rc-v2.patch, HBASE-16890-rc-v3.patch,
HBASE-16890-remove-contention-v1.patch, HBASE-16890-remove-contention.patch, 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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