On Mon, 2009-09-28 at 13:48 -0400, Vivek Goyal wrote: > Hmm.., so close to 25% reduction on average in completion time of konsole. > But this is in presece of writer. Does this help even in presence of 1 or > more sequential readers going? Dunno, I've only tested sequential writer. > So here latency seems to be coming from three sources. > > - Wait in CFQ before request is dispatched (only in case of competing seq readers). > - seek latencies > - latencies because of bigger requests are already dispatched to disk. > > So limiting the size of request will help with third factor but not with first > two factors and here seek latencies seem to be the biggest contributor. Yeah, seek latency seems to dominate. -Mike _______________________________________________ Containers mailing list Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/containers
