On 08 Jan 2014, at 04:47, Wido den Hollander <wido@xxxxxxxx> wrote: >> I expect that basically only one pool (.rgw?) will hold the true data, >> all other stuff (like '.users' and so on) will not be data intensive, as >> it might only store metadata. >> > Indeed. So you can have less PGs for these pools. Only the busy pools need more PGs to get a good data distribution. ok, that was what I expected. >> My question is: When a pool has a lot of PG's but basically almost no >> data in it, do the OSD's still have a lot of work to do, and does their >> memory requirement still grow? Or does this only hold true for 'busy' >> pools? >> > > Yes, memory consumption is by the amount of PGs, not the objects in it. Recovery ofcourse takes less time since no data has to be copied, but the more PGs you have, the more memory and CPU it takes. Allright, that meets to my expectations. Thanks for your helpful answer! wogri _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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