[jira] [Commented] (HBASE-15222) Use less contended classes for metrics

["Elliott Clark (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-15222?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15154668#comment-15154668 ] 

Elliott Clark commented on HBASE-15222:
---------------------------------------

I pushed a new benchmark for Counter/AtomicLong/LongAdder. After seeing the results I started using Counter more.
I also pushed a new benchmark for FastLongHistogram to see if it's good enough for our purposes.

> 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-v2.patch, HBASE-15222-v3.patch, HBASE-15222-v5.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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