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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-15967) Metric for active ipc Readers and make default fraction of cpu count
Date Sun, 05 Jun 2016 19:09:59 GMT
stack created HBASE-15967:
-----------------------------

             Summary: Metric for active ipc Readers and make default fraction of cpu count
                 Key: HBASE-15967
                 URL: https://issues.apache.org/jira/browse/HBASE-15967
             Project: HBase
          Issue Type: Sub-task
            Reporter: stack
            Assignee: stack


Our ipc Readers are hard coded at 10 regardless since . Running w/ less Readers, we go faster..(e.g.
12 Readers has us doing 135k with workloadc and 6 readers has us doing 145k).. .but hard to
tell what count of Readers are needed since no metric.

This issue changes Readers to be 1/4 the installed CPUs or 8, whichever is the minimum, and
then adds a new hbase.regionserver.ipc.runningReaders metric so you have a chance seeing whats
needed.



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