cpu usage is same for read and write ? ----- 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 -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html