@Alexandre: I don't have all the machines anymore, I'll see what I can do :). Only the commodity cluster remains @Mark Nelson: 2) Which bench? The RADOS one? 3) Sorry the RAID controller doesn't support JBOD... 5) I still have the commodity cluster, I'll perform some little rados benchmarks Cheers! On Tue, Aug 28, 2012 at 6:27 AM, Mark Kirkwood <mark.kirkwood@xxxxxxxxxxxxxxx> wrote: > +1 to that. I've been seeing 4-6 MB/s for 4K writes for 1 OSD with 1 SSD for > journal and another for data [1]. Interestingly I did see some nice scaling > with 4K random reads: 2-4 MB/s per thread for up to 8 threads (looked like > it plateaued thereafter). > > Cheers > > Mark > > [1] FYI not on the box I posted about before - on a more modern pc with > 6Bbit/s SATA. > > > On 28/08/12 14:18, Mark Nelson wrote: >> >> 5) rados bench tests with smaller requests could be interesting on 15k >> drives. I typically see about 1-2MB/s per OSD for 4k requests with 7200rpm >> SATA disks. > > -- 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
