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https://issues.apache.org/jira/browse/HBASE-11074?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13981453#comment-13981453
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stack commented on HBASE-11074:
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bq. Why not backport the histogram support?
Sorry. Working on trunk. PE seems to be under a bit of churn at the moment
(folks are using it). Lets backport the whole thing when it settles.
> Have PE emit histogram stats as it runs rather than dump once at end of test
> ----------------------------------------------------------------------------
>
> Key: HBASE-11074
> URL: https://issues.apache.org/jira/browse/HBASE-11074
> Project: HBase
> Issue Type: Improvement
> Components: Performance
> Reporter: stack
> Assignee: stack
> Priority: Minor
> Fix For: 0.99.0
>
> Attachments: 11074.txt
>
>
> PE emits progress reading and writing. Add to the progress emission current
> histogram snapshot readings. Means don' t have to wait till test completes
> to get idea of latencies. Here is sample:
> {code}
> 2014-04-24 22:47:28,085 INFO [TestClient-0] hbase.PerformanceEvaluation:
> 0/188730/1048576, Min=137.00, Mean=578.74, Max=5152756.00, StdDev=11884.79,
> 95th=1590.00, 99th=2950.68
> 2014-04-24 22:47:32,465 INFO [TestClient-0] hbase.PerformanceEvaluation:
> 0/199215/1048576, Min=137.00, Mean=570.19, Max=5152756.00, StdDev=11591.56,
> 95th=1543.00, 99th=2911.00
> 2014-04-24 22:47:37,334 INFO [TestClient-0] hbase.PerformanceEvaluation:
> 0/209700/1048576, Min=137.00, Mean=564.80, Max=5152756.00, StdDev=11317.96,
> 95th=1480.00, 99th=2863.00
> {code}
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