Re: Slow on heavy I/O operations.
- From: Ivan Voras <ivoras@xxxxxx>
- Date: Thu, 22 Mar 2007 14:39:33 +0100
Roman Gorohov. wrote:
But what I can't understand - why such non-critical(as it seems to me) disk activity,
cause 100% busyness for disk? Its claim to be 40.000MB/s transfers, but
sometimes its 100% busy when iostat show only 1 MB/s.
Because disk seeks count. If you have a lot of small transactions that
need seeks they'll kill performance (try running "find /" - you'll get
~500 kB/s rate and 100% busy disks).
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