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Posted to issues@hbase.apache.org by "stack (JIRA)" <ji...@apache.org> on 2016/07/03 06:36:11 UTC

[jira] [Updated] (HBASE-16146) Counters are expensive...

     [ https://issues.apache.org/jira/browse/HBASE-16146?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

stack updated HBASE-16146:
--------------------------
    Summary: Counters are expensive...  (was: Counter is a perf killer)

> Counters are expensive...
> -------------------------
>
>                 Key: HBASE-16146
>                 URL: https://issues.apache.org/jira/browse/HBASE-16146
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: stack
>         Attachments: 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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