Re: autoNUMA web workload regression

2015-05-06 Thread Rik van Riel
CC'ing Peter & Mel. Leaving Artem's email intact so they can read it :) On 05/06/2015 06:35 AM, Artem Bityutskiy wrote: Hi Rik, we observe a tremendous regression between kernel version 3.16 and 3.17 (and up), and I've bisected it to this commit: a43455a sched/numa: Ensure task_numa_migrate()

Re: autoNUMA web workload regression

2015-05-06 Thread Bityutskiy, Artem
On Wed, 2015-05-06 at 13:35 +0300, Artem Bityutskiy wrote: > If I take 4.1-rc1 and revert this patch, I observe 300% or more average > response time improvement comparing to vanilla 3.17. Sorry, I meant vanilla 4.1-rc1 here, not 3.17. -- Best Regards, Artem Bityutskiy ---

autoNUMA web workload regression

2015-05-06 Thread Artem Bityutskiy
Hi Rik, we observe a tremendous regression between kernel version 3.16 and 3.17 (and up), and I've bisected it to this commit: a43455a sched/numa: Ensure task_numa_migrate() checks the preferred node http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a43455a1d572daf7b730fe