Hi Mark, > Am 27.06.2012 15:55, schrieb Mark Nelson:
On 6/27/12 8:04 AM, Stefan Priebe - Profihost AG wrote: Hi Stefan, I'm not entirely clear how you are coming to the conclusion regarding the CPU requirements. If we go by the "1Ghz per OSD" suggestion, does that mean you plan to have 3.6GHz*20/1GHz = 72 OSDs per server?
oh i'm sorry it seems you got me wrong. I've a testsetup 4x OSDs with one disk each in ONE Server with a Intel Xeon 3,6Ghz. Each of the 4 ceph-osd processes take up to 170% CPU usage right now. So with these 4 osd disks and daemons i go up to 800% load. So EACH osd process takes up to 2 cores of 3,6 Ghz.
So i need right now 2 Core of 3,6Ghz each per OSD drive. So if i want to use 8-10 drives per osd server i need 20 cores of 3,6Ghz.
Anything wrong? 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
