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From Yan Chunlu <springri...@gmail.com>
Subject Re: anyway to throttle nodetool repair?
Date Wed, 12 Oct 2011 01:40:47 GMT
as I asked earlier:
http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/how-does-compaction-throughput-kb-per-sec-affect-disk-io-td6831711.html

might not directly throttle the disk I/O?

it would be easy if ionice could work with cassandra. not sure it is because
of jvm or something else, ionice works perfectly with "cp" or "mv" to make
the disk I/O very smooth.

thanks!

On Tue, Oct 11, 2011 at 3:15 PM, Peter Schuller <peter.schuller@infidyne.com
> wrote:

> > so how about disk io?  is there anyway to use ionice to control it?
> > I have tried to adjust the priority by "ionice -c3 -p [cassandra pid].
> >  seems not working...
>
> Compaction throttling (and in 1.0 internode streaming throttling) both
> address disk I/O.
>
> --
> / Peter Schuller (@scode on twitter)
>

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