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Posted to commits@cassandra.apache.org by "Rick Branson (JIRA)" <ji...@apache.org> on 2015/02/19 20:14:11 UTC

[jira] [Created] (CASSANDRA-8835) 100% CPU spikes from disruptor thrift server

Rick Branson created CASSANDRA-8835:
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             Summary: 100% CPU spikes from disruptor thrift server
                 Key: CASSANDRA-8835
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8835
             Project: Cassandra
          Issue Type: Bug
          Components: Core
         Environment: 2.0.11, hsha, JDK7u65, ~6,000 connections per machine
            Reporter: Rick Branson


Seeing big CPU spikes (to 100%) inside of the TDisruptorServer when running hsha. perf top loaded with JVM symbols shows this one floating to the top for anywhere between 15 and 90 seconds and then falling down:

Lcom/thinkaurelius/thrift/TDisruptorServer$SelectorThread;.selectorIterationComplete in Lcom/thinkaurelius/thrift/TDisruptorServer$AbstractSelectorThread;.select



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