On Tue, Apr 14, 2015 at 6:24 AM, yangruifeng.09209@xxxxxxx <yangruifeng.09209@xxxxxxx> wrote: > Hi all! > > > > I am testing rbd performance based on kernel rbd dirver, when I compared the > result of the kernel 3.13.6 with 3.18.11, my head gets so confused. > > > > look at the result, down by a third. > > > > 3.13.6 IOPS > > 3.18.11 IOPS > > 4KB seq read > > 97169 > > 23714 > > 4KB seq write > > 10110 > > 3177 > > 4KB rand read > > 7589 > > 4565 > > 4KB rand write > > 10497 > > 2307 How exactly are you getting these numbers? Which tools are you using, which tests are you running, in which order? Thanks, Ilya _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com