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From Peter Schuller <>
Subject Re: how does compaction_throughput_kb_per_sec affect disk io?
Date Wed, 28 Sep 2011 07:33:08 GMT
> I would think that compaction_throughput_kb_per_sec does have indirect impact
> on disk IO. High number means or setting it to 0 means there is no
> throttling on how much IO is being performed. Wouldn't it impact normal
> reads from disk during the time when disk IO or util is high which
> compaction is taking place?

It would. I don't think anyone intended to say otherwise; but the
setting itself does not directly change the behavior of flushes or
reads. I think that's what jbellis meant. I.e., there is no throttling
of flushes or reads.

/ Peter Schuller (@scode on twitter)

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