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. > * 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
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