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https://issues.apache.org/jira/browse/CASSANDRA-9896?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14643304#comment-14643304
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Brandon Williams commented on CASSANDRA-9896:
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Here's a comparison of 1ms with 64 concurrent writes, 2.0.15, and a patch given
to me by a third party that removes the sleep, with a smaller size (1k vs 64k):
http://cstar.datastax.com/graph?stats=761a933c-3498-11e5-b142-42010af0688f&metric=op_rate&operation=1_write&smoothing=1&show_aggregates=true&xmin=0&xmax=34.32&ymin=0&ymax=630.3
That patch performs significantly better, so I'm less certain that disabling
the commitlog recycling is the best solution, but obviously helps. You can see
the patch [here|https://github.com/driftx/cassandra/tree/nosleep]
> Add ability to disable commitlog recycling
> ------------------------------------------
>
> Key: CASSANDRA-9896
> URL: https://issues.apache.org/jira/browse/CASSANDRA-9896
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Reporter: Brandon Williams
> Assignee: Benedict
> Fix For: 2.1.x
>
>
> See CASSANDRA-9533 for background, specifically the graphs I linked.
> Benedict suggests this is due the commitlog recycling and I agree, so the
> simplest solution is to be able to disable that.
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