On Mon, Feb 2, 2015 at 11:28 AM, Andrei Mikhailovsky <andrei@xxxxxxxxxx> wrote: > > ________________________________ > > > I'm not sure what you mean about improvements for SSD disks, but the > OSD should be generally a bit faster. There are several cache tier > improvements included that should improve performance on most > workloads that others can speak about in more detail than I. > > > What i mean by the SSD disk improvement is that currently, the cluster made > of all ssd disks is pretty slow. You will not get the IO throughput of the > SSDs. My tests show the limit seems to be around 3K IOPs even though the > ssds can easily do 50K+ IOps. This makes it impossible to have a decent > database workload on the ceph cluster. Yeah, Hammer is notably faster than Firefly (and I think better than Giant), but it's incremental work. You're not suddenly going to get 50k IOPS in a single-threaded RBD workload against one OSD. -Greg _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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