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Posted to issues@hbase.apache.org by "Elliott Clark (JIRA)" <ji...@apache.org> on 2015/12/18 07:05:46 UTC

[jira] [Created] (HBASE-15004) Use nanoTime for all metrics

Elliott Clark created HBASE-15004:
-------------------------------------

             Summary: Use nanoTime for all metrics
                 Key: HBASE-15004
                 URL: https://issues.apache.org/jira/browse/HBASE-15004
             Project: HBase
          Issue Type: Improvement
            Reporter: Elliott Clark


{code}
Benchmark                  Mode       Cnt    Score   Error  Units
TimeBench.testMilliTime  sample  50615439  113.843 ± 3.106  ns/op
TimeBench.testNanoTime   sample  49392444  109.096 ± 1.976  ns/op
{code}

On any recent version of Linux (where > 95% of HBase regionservers run) the gettimeofday is cheap.



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