On Wed, May 29, 2019 at 9:36 AM Robert Sander <r.san...@heinlein-support.de> wrote:
> Am 24.05.19 um 14:43 schrieb Paul Emmerich: > > * SSD model? Lots of cheap SSDs simply can't handle more than that > > The customer currently has 12 Micron 5100 1,92TB (Micron_5100_MTFDDAK1) > SSDs and will get a batch of Micron 5200 in the next days > And there's your bottleneck ;) The Micron 5100 performs horribly in Ceph, I've seen similar performance in another cluster with these disks. Basically they max out at around 1000 IOPS and report 100% utilization and feel slow. Haven't seen the 5200 yet. Paul > > We have identified the performance settings in the BIOS as a major > factor. Ramping that up we got a remarkable performance increase. > > 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 >
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