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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-16146) Counter is a perf killer
Date Sun, 03 Jul 2016 06:36:11 GMT

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

stack updated HBASE-16146:
--------------------------
    Attachment: less_and_less_counters.png
                counters.patch

Also graph of my using less and then even less counters... w/ throughput going up.

> Counter is a perf killer
> ------------------------
>
>                 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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