Am 15.11.2012 12:18, schrieb Alexandre DERUMIER:
cpu usage is same for read and write ?
no for read it is just around 25%. And i get "full" (limited by rbd / librbd) 23.000 iops per vm.
----- Mail original ----- De: "Stefan Priebe - Profihost AG" <s.priebe@xxxxxxxxxxxx> À: ceph-devel@xxxxxxxxxxxxxxx Envoyé: Jeudi 15 Novembre 2012 11:56:37 Objet: ceph-osd cpu usage Hello list, my main problem right now is that ceph does not scale for me (more vms using rbd). It does not scale as the ceph-osd is using all my CPU core all the time (8 cores) with just 4 SSDs. The SSDs are far away from being loaded. What is the best way to find out what the ceph-osd process is doing all the time? A gperf graph is attached. Greets, Stefan
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