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https://issues.apache.org/jira/browse/HBASE-15222?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15135084#comment-15135084
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Elliott Clark commented on HBASE-15222:
---------------------------------------
Initial results:
{code}
Benchmark Mode Cnt Score Error Units
HistogramBenchmark.testHDRAtomic avgt 2 1117.988 ns/op
HistogramBenchmark.testHDRConcurrent avgt 2 2330.014 ns/op
HistogramBenchmark.testNormal avgt 2 6085.187 ns/op
HistogramBenchmark.testQuant avgt 2 397337.211 ns/op
{code}
So HDR is much faster. I'm going to re-run the test on server hardware with
more cores than my laptop. I'm also going to run it for longer.
> Use HDR histograms rather than hadoop or yammer's
> -------------------------------------------------
>
> Key: HBASE-15222
> URL: https://issues.apache.org/jira/browse/HBASE-15222
> Project: HBase
> Issue Type: Bug
> Components: metrics
> Affects Versions: 2.0.0, 1.2.0, 1.3.0
> Reporter: Elliott Clark
> Assignee: Elliott Clark
> Fix For: 2.0.0, 1.3.0
>
>
> Running the benchmarks now, but it looks like the results are pretty extreme.
> The locking in our histograms is pretty extreme.
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