Am 02.07.2014 15:07, schrieb Haomai Wang: > Could you give some perf counter from rbd client side? Such as op latency? Sorry haven't any counters. As this mail was some days unseen - i thought nobody has an idea or could help. Stefan > On Wed, Jul 2, 2014 at 9:01 PM, Stefan Priebe - Profihost AG > <s.priebe at profihost.ag> wrote: >> Am 02.07.2014 00:51, schrieb Gregory Farnum: >>> On Thu, Jun 26, 2014 at 11:49 PM, Stefan Priebe - Profihost AG >>> <s.priebe at profihost.ag> wrote: >>>> Hi Greg, >>>> >>>> Am 26.06.2014 02:17, schrieb Gregory Farnum: >>>>> Sorry we let this drop; we've all been busy traveling and things. >>>>> >>>>> There have been a lot of changes to librados between Dumpling and >>>>> Firefly, but we have no idea what would have made it slower. Can you >>>>> provide more details about how you were running these tests? >>>> >>>> it's just a normal fio run: >>>> fio --ioengine=rbd --bs=4k --name=foo --invalidate=0 >>>> --readwrite=randwrite --iodepth=32 --rbdname=fio_test2 --pool=teststor >>>> --runtime=90 --numjobs=32 --direct=1 --group >>>> >>>> Running one time with firefly libs and one time with dumpling libs. >>>> Traget is always the same pool on a firefly ceph storage. >>> >>> What's the backing cluster you're running against? What kind of CPU >>> usage do you see with both? 25k IOPS is definitely getting up there, >>> but I'd like some guidance about whether we're looking for a reduction >>> in parallelism, or an increase in per-op costs, or something else. >> >> Hi Greg, >> >> i don't have that test cluster anymore. It had to go into production >> with dumpling. >> >> So i can't tell you. >> >> Sorry. >> >> Stefan >> >>> -Greg >>> Software Engineer #42 @ http://inktank.com | http://ceph.com >>> -- >>> To unsubscribe from this list: send the line "unsubscribe ceph-devel" in >>> the body of a message to majordomo at vger.kernel.org >>> More majordomo info at http://vger.kernel.org/majordomo-info.html >>> >> _______________________________________________ >> ceph-users mailing list >> ceph-users at lists.ceph.com >> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > > >
 |