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

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

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

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

[ +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

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

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

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

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