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From Yan Chunlu <springri...@gmail.com>
Subject Re: anyway to throttle nodetool repair?
Date Tue, 11 Oct 2011 03:21:46 GMT
I am using commodity hardware so even minor compact make disk io goes 100%
and server load get very high

On Tue, Oct 11, 2011 at 11:19 AM, Yan Chunlu <springrider@gmail.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...
>
>
> On Wed, Sep 28, 2011 at 12:02 AM, Peter Schuller <
> peter.schuller@infidyne.com> wrote:
>
>> > I saw the ticket about compaction throttling, just wonder is that
>> necessary
>> > to add an option or is there anyway to do repair throttling?
>> > every time I run nodetool repair, it uses all disk io and the server
>> load
>> > goes up quickly, just wonder is there anyway to make it smoother.
>>
>> The validating compaction that is part of repair is subject to
>> compaction throttling.
>>
>> The streaming of sstables afterwards is not however. In 1.0 there is
>> thottling of streaming:
>> https://issues.apache.org/jira/browse/CASSANDRA-3080
>>
>> --
>> / Peter Schuller (@scode on twitter)
>>
>
>

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