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https://issues.apache.org/jira/browse/CASSANDRA-9946?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14648707#comment-14648707
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sankalp kohli commented on CASSANDRA-9946:
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"CFQ is not the most popular choice for databases. The standard recommendation
is deadline or no-op."
+1 We are working on moving away from CFQ to no-op. We have seen some
improvements with it.
> use ioprio_set on compaction threads by default instead of manually throttling
> ------------------------------------------------------------------------------
>
> Key: CASSANDRA-9946
> URL: https://issues.apache.org/jira/browse/CASSANDRA-9946
> Project: Cassandra
> Issue Type: New Feature
> Components: Core
> Reporter: Jonathan Ellis
> Assignee: Ariel Weisberg
> Fix For: 3.x
>
>
> Compaction throttling works as designed, but it has two drawbacks:
> * it requires manual tuning to choose the "right" value for a given machine
> * it does not allow compaction to "burst" above its limit if there is
> additional i/o capacity available while there are less application requests
> to serve
> Using ioprio_set instead solves both of these problems.
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