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https://issues.apache.org/jira/browse/HBASE-15222?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15157996#comment-15157996
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Elliott Clark commented on HBASE-15222:
---------------------------------------
Even on a more beefy server with 32 cores the trend seems to be the same.
{code}
Benchmark Mode Cnt Score
Error Units
HistogramBenchmark.fastLong sample 35227492 3567.574 ±
62.455 ns/op
HistogramBenchmark.testHDRAtomic sample 66502547 7451.278 ±
27.255 ns/op
HistogramBenchmark.testHDRConcurrent sample 44092577 6178.153 ±
24.280 ns/op
HistogramBenchmark.testMutableTimeHistogram sample 59723205 3207.766 ±
17.421 ns/op
HistogramBenchmark.testYammer sample 55265767 14979.696 ±
42.628 ns/op
{code}
> Use less contended classes for metrics
> --------------------------------------
>
> 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
> Priority: Critical
> Fix For: 2.0.0, 1.3.0
>
> Attachments: HBASE-15222-v1.patch, HBASE-15222-v10.patch,
> HBASE-15222-v11.patch, HBASE-15222-v2.patch, HBASE-15222-v3.patch,
> HBASE-15222-v5.patch, HBASE-15222-v6.patch, HBASE-15222-v8.patch,
> HBASE-15222-v9.patch, HBASE-15222.patch
>
>
> 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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