On 09/07/2013 14:41, Gregory Farnum wrote:
On Mon, Jul 8, 2013 at 8:08 PM, Mikaël Cluseau<mclus...@isi.nc> wrote:
Hi Greg,
thank you for your (fast) answer.
<snip>
Please keep all messages on the list. :)
oops, reply-to isn't set by default here ^^
I just realized you were talking about increased latencies during
scrubbing; the options you reference are for data recovery, not
scrubbing. However, there are a number of options you can tune to
throttle scrubbing in different ways; have you checked the
documentation for those? (eg,
http://ceph.com/docs/master/rados/configuration/osd-config-ref/#scrubbing)
Thanks, having a second look while speaking with a expert seems valuable
;) I see two options.
* increase osd scrub max interval to extend the time between scrubs.
* osd scrub load threshold (default 0.5) : I'm always higher (between
1 and 2) so increasing this could enable the osd scrub min interval
parameter to be usefull...
I think I'll go for the second option because the problematic load
spikes seem to have a period of 24h + epsilon...
Thanks a lot !
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