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https://issues.apache.org/jira/browse/HBASE-16146?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15514911#comment-15514911
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Enis Soztutar commented on HBASE-16146:
---------------------------------------

Maybe we can make it so that Counter just delegates to LongAdder if it is 
available.  

> Counters are expensive...
> -------------------------
>
>                 Key: HBASE-16146
>                 URL: https://issues.apache.org/jira/browse/HBASE-16146
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: stack
>         Attachments: HBASE-16146.branch-1.3.001.patch, counters.patch, 
> less_and_less_counters.png
>
>
> Doing workloadc, perf shows 10%+ of CPU being spent on counter#add. If I 
> disable some of the hot ones -- see patch -- I can get 10% more throughput 
> (390k to 440k). Figure something better.



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