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From "Brandon Williams (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (CASSANDRA-8835) 100% CPU spikes from disruptor thrift server
Date Fri, 20 Feb 2015 16:14:12 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-8835?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Brandon Williams reassigned CASSANDRA-8835:
-------------------------------------------

    Assignee: Pavel Yaskevich

> 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
>            Assignee: Pavel Yaskevich
>
> 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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