Jens Axboe <axboe@xxxxxxxxx> 于2018年7月23日周一 下午5:05写道： > > On 7/23/18 9:00 AM, Jack Wang wrote: > > Hi Greg, > > > > Thanks for quick reply. Please see reply inline. > > > > > > > > Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx> 于2018年7月23日周一 下午3:34写道： > >> > >> On Mon, Jul 23, 2018 at 03:24:22PM +0200, Jack Wang wrote: > >>> Hi Greg, > >>> > >>> Please consider this patchset, which include block/scsi multiqueue performance > >>> enhancement and bugfix. > >> > >> What exactly is the performance enhancement? How can you measure it? > >> How did you measure it? > > I'm testing on SRP/IBNBD using fio, I've seen +10% with mix IO load, > > and 50% improvement on small IO (bs=512.) with the patchset. > > Big nak on backporting this huge series, it's a lot of core changes. > It's way beyond the scope of a stable fix backport. > > -- > Jens Axboe > OK, could you shed light on how could we fix the queue stall problem on 4.14? My colleague Roman reported to upstream: https://lkml.org/lkml/2017/10/18/263 It's still there on latest 4.14. Thanks, Jack
