On Wed, Jul 2, 2014 at 12:44 PM, Stefan Priebe <s.priebe at profihost.ag> wrote: > Hi Greg, > > Am 02.07.2014 21:36, schrieb Gregory Farnum: >> >> On Wed, Jul 2, 2014 at 12:00 PM, Stefan Priebe <s.priebe at profihost.ag> >> wrote: >>> >>> >>> Am 02.07.2014 16:00, schrieb Gregory Farnum: >>> >>>> Yeah, it's fighting for attention with a lot of other urgent stuff. :( >>>> >>>> Anyway, even if you can't look up any details or reproduce at this >>>> time, I'm sure you know what shape the cluster was (number of OSDs, >>>> running on SSDs or hard drives, etc), and that would be useful >>>> guidance. :) >>> >>> >>> >>> Sure >>> >>> Number of OSDs: 24 >>> Each OSD has an SSD capable of doing tested with fio before installing >>> ceph >>> (70.000 iop/s 4k write, 580MB/s seq. write 1MB blocks) >>> >>> Single Xeon E5-1620 v2 @ 3.70GHz >>> >>> 48GB RAM >> >> >> Awesome, thanks. >> >> I went through the changelogs on the librados/, osdc/, and msg/ >> directories to see if I could find any likely change candidates >> between Dumpling and Firefly and couldn't see any issues. :( But I >> suspect that the sharding changes coming will more than make up the >> difference, so you might want to plan on checking that out when it >> arrives, even if you don't want to deploy it to production.n > > > To which changes do you refer? Will they be part or backported of/to > firefly? Yehuda's got a pretty big patchset that is sharding up the "big Objecter lock" into many smaller mutexes and RWLocks that will make it much more parallel. He's on vacation just now but I understand it's almost ready to merge; I don't think it'll be suitable for backport to firefly, though (it's big). -Greg Software Engineer #42 @ http://inktank.com | http://ceph.com
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