[jira] [Updated] (CASSANDRA-9946) use ioprio_set on compaction threads by default instead of manually throttling

["C. Scott Andreas (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CASSANDRA-9946?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

C. Scott Andreas updated CASSANDRA-9946:
----------------------------------------
    Component/s: Compaction

> 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: Compaction
>            Reporter: Jonathan Ellis
>            Priority: Major
>              Labels: compaction
>             Fix For: 4.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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