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https://issues.apache.org/jira/browse/HBASE-20875?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16541074#comment-16541074
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Hadoop QA commented on HBASE-20875:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 0m
33s{color} | {color:blue} Docker mode activated. {color} |
| {color:red}-1{color} | {color:red} patch {color} | {color:red} 0m 3s{color}
| {color:red} HBASE-20875 does not apply to master. Rebase required? Wrong
Branch? See https://yetus.apache.org/documentation/0.7.0/precommit-patchnames
for help. {color} |
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|| Subsystem || Report/Notes ||
| Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/hbase:b002b0b |
| JIRA Issue | HBASE-20875 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12931264/0001-HBASE-20875-MemStoreLABImp-copyIntoCell-uses-7-CPU-w.patch
|
| Console output |
https://builds.apache.org/job/PreCommit-HBASE-Build/13602/console |
| Powered by | Apache Yetus 0.7.0 http://yetus.apache.org |
This message was automatically generated.
> MemStoreLABImp::copyIntoCell uses 7% CPU when writing
> -----------------------------------------------------
>
> Key: HBASE-20875
> URL: https://issues.apache.org/jira/browse/HBASE-20875
> Project: HBase
> Issue Type: Sub-task
> Components: Performance
> Affects Versions: 2.0.1
> Reporter: stack
> Assignee: stack
> Priority: Major
> Fix For: 2.0.2
>
> Attachments:
> 0001-HBASE-20875-MemStoreLABImp-copyIntoCell-uses-7-CPU-w.patch,
> 2.0707.baseline.91935.cpu.svg, 2.0711.patched.145414.cpu.svg, Screen Shot
> 2018-07-11 at 9.52.46 PM.png
>
>
> Looks like this with a PE random write loading:
> {code}
> ./hbase/bin/hbase --config ~/conf_hbase
> org.apache.hadoop.hbase.PerformanceEvaluation --nomapred --presplit=40
> --size=30 --columns=10 --valueSize=100 randomWrite 200
> {code}
> ... against a single server.
> {code}
> 12.47% perf-91935.map
> [.] Lorg/apache/hadoop/hbase/BBKVComparator;::compare
> 10.42% libjvm.so
> [.]
> ParNewGeneration::copy_to_survivor_space_avoiding_promotion_undo(ParScanThreadState*,
> oopDesc*, unsigned long, markOopDesc*)
> 6.78% perf-91935.map
> [.]
> Lorg/apache/hadoop/hbase/regionserver/MemStoreLABImpl;::copyCellInto
> ....
> {code}
> These are top CPU consumers using perf-map-agent ./bin/perf-java-top...
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