On Fri, Apr 24, 2015 at 6:39 AM, Nick Fisk <nick@xxxxxxxxxx> wrote: > From the Fio runs, I see you are getting around 200 iops at 128kb write io > size. I would imagine you should be getting somewhere around 200-300 iops > for the cluster you posted in the initial post, so it looks like its > performing about right. Why is that? Why would it not be: 28 drives * 100 IOPs/drive / 2 copies * %efficiency How did you arrive at this estimate? Or is the above more or less correct and %efficiency really is limited to the 15-20% range? In any case, this is all very interesting and informative, and I really appreciate the feedback. Thanks! _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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