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https://issues.apache.org/jira/browse/CASSANDRA-19700?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17854472#comment-17854472
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Brandon Williams commented on CASSANDRA-19700:
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What I would do next to investigate further is produce a flamegraph for each to
see where the CPU is going.
> Disabling internode compression causes high CPU usage and load
> --------------------------------------------------------------
>
> Key: CASSANDRA-19700
> URL: https://issues.apache.org/jira/browse/CASSANDRA-19700
> Project: Cassandra
> Issue Type: Task
> Reporter: Zbyszek Z
> Priority: Normal
> Attachments: image001.jpg
>
>
> I am not sure this is BUG or feature but cassandra is acting contrary to the
> belief that compression causes higher CPU usage. I have attached comparision
> graph - first part (left) is a identical cluster that have
> internode_compression={*}dc{*} and second part (right hand) is
> internode_compression={*}all.{*}
> Contrary to what one would thought, enabling compression causes signifficant
> drop in load and cpu usage.
> !image001.jpg|width=532,height=327!
> I am reporting it only becouse maybe there is different pipeline in cassandra
> that handles networking that is sub-optimal and does not handle high traffic
> well (just blind-shoot).
> Any thoughts?
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