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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-15971) Regression: Random Read/WorkloadC slower in 1.x than 0.98
Date Mon, 06 Jun 2016 21:53:21 GMT
stack created HBASE-15971:
-----------------------------

             Summary: Regression: Random Read/WorkloadC slower in 1.x than 0.98
                 Key: HBASE-15971
                 URL: https://issues.apache.org/jira/browse/HBASE-15971
             Project: HBase
          Issue Type: Sub-task
          Components: rpc
            Reporter: stack
            Assignee: stack
            Priority: Critical


branch-1 is slower than 0.98 doing YCSB random read/workloadC. It seems to be doing about
1/2 the throughput of 0.98.

In branch-1, we have low handler occupancy compared to 0.98. Hacking in reader thread occupancy
metric, is about the same in both. In parent issue, hacking out the scheduler, I am able to
get branch-1 to go 3x faster so will dig in here.



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