On Wed, Mar 6, 2013 at 5:06 AM, Sławomir Skowron <szibis@xxxxxxxxx> wrote:
> Hi, i do some test, to reproduce this problem.
>
> As you can see, only one drive (each drive in same PG) is much more
> utilize, then others, and there are some ops in queue on this slow
> osd. This test is getting heads from s3 objects, alphabetically
> sorted. This is strange. why this files is going in much part only
> from this triple osd's.
>
> checking what osd are in this pg.
>
> ceph pg map 7.35b
> osdmap e117008 pg 7.35b (7.35b) -> up [18,61,133] acting [18,61,133]
>
> On osd.61
>
> { "num_ops": 13,
> "ops": [
> { "description": "osd_sub_op(client.10376104.0:961532 7.35b
> 2b11a75b\/2013-03-06-13-8700.1-ocdn\/head\/\/7 [] v 117008'1370134
The ops log is slowing you down. Unless you really need it, set 'rgw
enable ops log = false'. This is off by default in bobtail.
Yehuda
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