On Mon, 22 Sep 2014 13:35:26 +0200 Udo Lembke wrote: > Hi Christian, > > On 22.09.2014 05:36, Christian Balzer wrote: > > Hello, > > > > On Sun, 21 Sep 2014 21:00:48 +0200 Udo Lembke wrote: > > > >> Hi Christian, > >> > >> On 21.09.2014 07:18, Christian Balzer wrote: > >>> ... > >>> Personally I found ext4 to be faster than XFS in nearly all use cases > >>> and the lack of full, real kernel integration of ZFS is something > >>> that doesn't appeal to me either. > >> a little bit OT... what kind of ext4-mount options do you use? > >> I have an 5-node cluster with xfs (60 osds), and perhaps the > >> performance with ext4 would be better?! > > Hard to tell w/o testing your particular load, I/O patterns. > > > > When benchmarking directly with single disks or RAIDs it is fairly > > straightforward to see: > > http://lists.ceph.com/pipermail/ceph-users-ceph.com/2014-April/028540.html > > > > Also note that the actual question has never been answered by the Ceph > > team, which is a shame as I venture that it would make things faster. > do you run your cluster without "filestore_xattr_use_omap = true" or > with due missing answer (to be on the safe side)?? > For the time being at the default, aka "filestore_xattr_use_omap = true". Christian -- Christian Balzer Network/Systems Engineer chibi at gol.com Global OnLine Japan/Fusion Communications http://www.gol.com/
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