Re: [dm-devel] [RFC PATCH 0/4] dm mpath: vastly improve blk-mq IO performance

2016-04-13 Thread Johannes Thumshirn
On Freitag, 8. April 2016 15:29:39 CEST Mike Snitzer wrote: > On Fri, Apr 08 2016 at 7:42am -0400, > Johannes Thumshirn wrote: > > > Ladies and Gentlemen, > > To show off some numbers from our testing: > > > > All tests are performed against the cache of the Array, not the disks as we > > want

Re: [dm-devel] [RFC PATCH 0/4] dm mpath: vastly improve blk-mq IO performance

2016-04-08 Thread Mike Snitzer
On Fri, Apr 08 2016 at 7:42am -0400, Johannes Thumshirn wrote: > Ladies and Gentlemen, > To show off some numbers from our testing: > > All tests are performed against the cache of the Array, not the disks as we > wanted to test the Linux stack not the Disk Array. > > All single queue tests h

Re: [dm-devel] [RFC PATCH 0/4] dm mpath: vastly improve blk-mq IO performance

2016-04-08 Thread Johannes Thumshirn
Ladies and Gentlemen, To show off some numbers from our testing: All tests are performed against the cache of the Array, not the disks as we wanted to test the Linux stack not the Disk Array. All single queue tests have been performed with the deadline I/O Scheduler. Comments welcome, have fun

Re: [dm-devel] [RFC PATCH 0/4] dm mpath: vastly improve blk-mq IO performance

2016-04-07 Thread Mike Snitzer
On Thu, Apr 07 2016 at 10:58am -0400, Hannes Reinecke wrote: > On 03/31/2016 10:04 PM, Mike Snitzer wrote: > > I developed these changes some weeks ago but have since focused on > > regression and performance testing on larger NUMA systems. > > > > For regression testing I've been using mptest:

Re: [dm-devel] [RFC PATCH 0/4] dm mpath: vastly improve blk-mq IO performance

2016-04-07 Thread Hannes Reinecke
On 03/31/2016 10:04 PM, Mike Snitzer wrote: > I developed these changes some weeks ago but have since focused on > regression and performance testing on larger NUMA systems. > > For regression testing I've been using mptest: > https://github.com/snitm/mptest > > For performance testing I've been

Re: [dm-devel] [RFC PATCH 0/4] dm mpath: vastly improve blk-mq IO performance

2016-04-01 Thread Mike Snitzer
On Fri, Apr 01 2016 at 9:37am -0400, Johannes Thumshirn wrote: > [ +Cc Hannes ] > > On 2016-04-01 15:22, Mike Snitzer wrote: > >On Fri, Apr 01 2016 at 4:12am -0400, > >Johannes Thumshirn wrote: > > > >>On 2016-03-31 22:04, Mike Snitzer wrote: > >>>I developed these changes some weeks ago but

Re: [dm-devel] [RFC PATCH 0/4] dm mpath: vastly improve blk-mq IO performance

2016-04-01 Thread Johannes Thumshirn
[ +Cc Hannes ] On 2016-04-01 15:22, Mike Snitzer wrote: On Fri, Apr 01 2016 at 4:12am -0400, Johannes Thumshirn wrote: On 2016-03-31 22:04, Mike Snitzer wrote: >I developed these changes some weeks ago but have since focused on >regression and performance testing on larger NUMA systems. > >F

Re: [dm-devel] [RFC PATCH 0/4] dm mpath: vastly improve blk-mq IO performance

2016-04-01 Thread Mike Snitzer
On Fri, Apr 01 2016 at 4:12am -0400, Johannes Thumshirn wrote: > On 2016-03-31 22:04, Mike Snitzer wrote: > >I developed these changes some weeks ago but have since focused on > >regression and performance testing on larger NUMA systems. > > > >For regression testing I've been using mptest: > >h

Re: [dm-devel] [RFC PATCH 0/4] dm mpath: vastly improve blk-mq IO performance

2016-04-01 Thread Johannes Thumshirn
On 2016-03-31 22:04, Mike Snitzer wrote: I developed these changes some weeks ago but have since focused on regression and performance testing on larger NUMA systems. For regression testing I've been using mptest: https://github.com/snitm/mptest For performance testing I've been using a null_bl

[dm-devel] [RFC PATCH 0/4] dm mpath: vastly improve blk-mq IO performance

2016-03-31 Thread Mike Snitzer
I developed these changes some weeks ago but have since focused on regression and performance testing on larger NUMA systems. For regression testing I've been using mptest: https://github.com/snitm/mptest For performance testing I've been using a null_blk device (with various configuration permut