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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-12040) Performances issues with FilteredScanTest
Date Sat, 27 Sep 2014 03:34:34 GMT

    [ https://issues.apache.org/jira/browse/HBASE-12040?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14150368#comment-14150368
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stack commented on HBASE-12040:
-------------------------------

When I compare on a cluster doing 100 scans, 0.99.0 dev release is 30% faster than 0.98. 
This is one run of 0.98.6 and two of 0.99.0.

Let me use JMS's script and see what I get over ten runs.




> Performances issues with FilteredScanTest 
> ------------------------------------------
>
>                 Key: HBASE-12040
>                 URL: https://issues.apache.org/jira/browse/HBASE-12040
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 0.99.1
>            Reporter: Jean-Marc Spaggiari
>            Assignee: stack
>            Priority: Blocker
>             Fix For: 0.98.7, 0.99.1
>
>         Attachments: at-HBASE-11331.html, pre-HBASE-11331.html
>
>
> While testing 0.99.0RC1 release performances, compared to 0.98.6, figured that:
> - FilteredScanTest is 100 times slower;
> - RandomReadTest is 1.5 times slower;
> - RandomSeekScanTest is 3.2 times slower;
> - RandomScanWithRange10Test is 1,2 times slower;
> - RandomScanWithRange100Test is 1,3 times slower;
> - RandomScanWithRange1000Test is 4 times slower;
> - SequentialReadTest is 1,7 times slower;
> - SequentialWriteTest is just a bit faster;
> - RandomWriteTest	 is just a bit faster;
> - GaussianRandomReadBenchmark is just a beat slower;
> - SequentialReadBenchmark is 1,1 times slower;
> - SequentialWriteBenchmark is 1,1 times slower;
> - UniformRandomReadBenchmark crashed;
> - UniformRandomSmallScan is 1,3 times slower.



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