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https://issues.apache.org/jira/browse/CASSANDRA-5306?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13611602#comment-13611602
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Jonathan Ellis commented on CASSANDRA-5306:
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I'd be happy with just iowait, to be honest, which can be easily read from
/proc. That would be a big improvement on the existing heuristic; Windows can
fall back to compaction throughput.
The current heuristic of "percentage of my space that I'm currently compacting"
is only really useful for distinguishing "compacting" from "not compacting;"
whether it will give a useful comparison between two different nodes otherwise
is essentially random.
> Improve Dsnitch Severity
> ------------------------
>
> Key: CASSANDRA-5306
> URL: https://issues.apache.org/jira/browse/CASSANDRA-5306
> Project: Cassandra
> Issue Type: Improvement
> Reporter: Vijay
> Assignee: Vijay
> Priority: Minor
> Fix For: 1.2.4
>
>
> This ticket is to continue the discussion in CASSANDRA-5255.
> Currently Dsnitch reports the Severity by calculating the amount of data
> compacting relative to load of the node.
> It will be nice to report Severity as a factor of load average, N/W
> Throughput and IO Wait instead.
> http://www.hyperic.com/products/sigar seem to have it (But personally i have
> not used it).
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