On Fri, May 24, 2019 at 3:27 PM Robert Sander <r.san...@heinlein-support.de> wrote:
> Am 24.05.19 um 14:43 schrieb Paul Emmerich: > > 20 MB/s at 4K blocks is ~5000 iops, that's 1250 IOPS per SSD (assuming > > replica 3). > > > > What we usually check in scenarios like these: > > > > * SSD model? Lots of cheap SSDs simply can't handle more than that > > The system has been newly created and is not busy at all. > > We tested a single SSD without OSD on top with fio: it can do 50K IOPS > read and 16K IOPS write. > If you tell us the disk model someone here might be able to share their experiences with that disk. Paul -- Paul Emmerich Looking for help with your Ceph cluster? Contact us at https://croit.io croit GmbH Freseniusstr. 31h 81247 München www.croit.io Tel: +49 89 1896585 90 > > > * Get some proper statistics such as OSD latencies, disk IO utilization, > > etc. A benchmark without detailed performance data doesn't really help > > to debug such a problem > > Yes, that is correct, we will try to setup a perfdata gathering system. > > Regards > -- > Robert Sander > Heinlein Support GmbH > Linux: Akademie - Support - Hosting > http://www.heinlein-support.de > > Tel: 030-405051-43 > Fax: 030-405051-19 > > Zwangsangaben lt. §35a GmbHG: > HRB 93818 B / Amtsgericht Berlin-Charlottenburg, > Geschäftsführer: Peer Heinlein -- Sitz: Berlin > > _______________________________________________ > ceph-users mailing list > ceph-users@lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >
_______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
