On Thu, Feb 06, 2014 at 06:29:11PM +0200, Sergey Meirovich wrote: > On 5 February 2014 16:52, Sergey Meirovich <rathamahata@xxxxxxxxx> wrote: > > Hi Christoph, > > > > Thanks a lot! Applied your patches on top of 3.13.1 and they indeed > > make a huge difference. > > > > > > Append AIO > > > > chunk size w/o patches with patches > > =================================================== > > 4k 6.8834 Mb/sec 1762.15 IOps 31.542 Mb/sec 8074.75 IOps > > 8k 15.321 Mb/sec 1961.12 IOps 62.873 Mb/sec 8047.71 IOps > > 16k 28.257 Mb/sec 1808.46 IOps 139.35 Mb/sec 8918.45 IOps > > And with simple wrapper around io_submit() difference for 4 k is even > more impressive than with sysbench: > > without patches: > ===================== > bandwidth (MiB/s): 11.89 > IOps: 3044.58 > > with patches: > ===================== > bandwidth (MiB/s): 118.16 > IOps: 30250.17 Thanks for providing numbers, Sergey. It's clear that we need to make this change from them. Can I add a "Tested-by: Sergey Meirovich <rathamahata@xxxxxxxxx>" to the patches? Cheers, Dave. -- Dave Chinner david@xxxxxxxxxxxxx _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
