[
https://issues.apache.org/jira/browse/HBASE-16890?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15635789#comment-15635789
]
Duo Zhang commented on HBASE-16890:
-----------------------------------
Another round, the old AsyncFSWAL is still the slowest. The other three are
almost same.
{noformat}
./bin/hbase org.apache.hadoop.hbase.PerformanceEvaluation --nomapred
--presplit=50 --size=10 --columns=50 --valueSize=200 --writeToWAL=true
--bloomFilter=NONE randomWrite 50
FSHLog Min: 75930ms Max: 88080ms Avg: 84743ms
AsyncFSWAL: Min: 89337ms Max: 103743ms Avg: 100205ms
AsyncFSWAL-duo: Min: 72335ms Max: 86026ms Avg: 81308ms
AsyncFSWAL-ram: Min: 74423ms Max: 85647msAvg: 82212ms
{noformat}
What's your new result [~ram_krish]?
And boss [~stack], could you please try the new patches to see they work for
you? Both ram's and mine. Thanks.
> 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.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
