On Mon, Oct 27, 2014 at 11:00:46AM +0100, Alexandre DERUMIER wrote: > >>Can you do a perf report -ag and then a perf report to see where these > >>cycles are spent? > > Yes, sure. > > I have attached the perf report to this mail. > (This is with kernel 3.14, don't have access to my 3.18 host for now) Oh, that's without the blk-mq patch? Either way the profile doesn't really sum up to a fully used up cpu. Sage, Alex - are there any ordring constraints in the rbd client? If not we could probably aim for per-cpu queues using blk-mq and a socket per cpu or similar. -- 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
