On Wed, May 29, 2019 at 9:36 AM Robert Sander <r.sander@xxxxxxxxxxxxxxxxxxx> 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@xxxxxxxxxxxxxx
http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
_______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
