Am 30.05.2012 13:20, schrieb Stefan Majer: > H, > > > On Wed, May 30, 2012 at 1:04 PM, Stefan Priebe - Profihost AG > <s.priebe@xxxxxxxxxxxx <mailto:s.priebe@xxxxxxxxxxxx>> wrote: > > Am 30.05.2012 09:19, schrieb Stefan Majer: > > Hi, > > > > ok, so your replication level is 2 and you have 2*1GB/sec right ? > Generally yes - but for this new test it was just 1*1GB/s (see below). > > > do you have a iostat -x 3 output and or a dstat from all effected > > machines during your rados bench runs as well ? > > As the output looks exactly the same on all OSDs here is it from ONE > osd: > > Kernel 3.4: > http://pastebin.com/raw.php?i=sV9vKsWy > > This is strange, looks like a real regression in 3.4 ? but i guess it is > only possible to track down this by doing > git bisect on the kernel sources :-( I also tried 3.3 and 3.2 it's the same... (haven't tested 3.1). > Kernel 3.0: > http://pastebin.com/raw.php?i=eafjpPpK > > > Here you can see a constant rate to disk of ~ 50 - 70Mbyte/sec with > about 10-15% utilization on them. So this test is not disk bound i > guess your network is saturated. Can you run dstat during this test as > well to see the network bandwith used as well. Absolutely correct. I'm aware of this. I just want to have this result with 3.4 so that i can use btrfs. Stefan -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
