On Thu, May 8, 2014 at 9:37 AM, Gregory Farnum <g...@inktank.com> wrote: > > Hmm, with 128 IOs at a time (I believe I'm reading that correctly?) > that's about 40ms of latency per op (for userspace RBD), which seems > awfully long.
Maybe this is off the topic, AFAIK "--iodepth=128" doesn't submits 128 IOs at a time. There is a option of fio "iodepth_batch_submit=int", which defaults to 1, makes fio submit each IO as soon as it is available. See more: http://www.bluestop.org/fio/HOWTO.txt _______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
