Messages in this thread | | | Date | Thu, 31 Jul 2014 17:57:23 +0200 | From | Peter Zijlstra <> | Subject | Re: [LKP] [sched/numa] a43455a1d57: +94.1% proc-vmstat.numa_hint_faults_local |
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On Thu, Jul 31, 2014 at 12:42:41PM +0200, Peter Zijlstra wrote: > On Tue, Jul 29, 2014 at 02:39:40AM -0400, Rik van Riel wrote: > > On Tue, 29 Jul 2014 13:24:05 +0800 > > Aaron Lu <aaron.lu@intel.com> wrote: > > > > > FYI, we noticed the below changes on > > > > > > git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master > > > commit a43455a1d572daf7b730fe12eb747d1e17411365 ("sched/numa: Ensure task_numa_migrate() checks the preferred node") > > > > > > ebe06187bf2aec1 a43455a1d572daf7b730fe12e > > > --------------- ------------------------- > > > 94500 ~ 3% +115.6% 203711 ~ 6% ivb42/hackbench/50%-threads-pipe > > > 67745 ~ 4% +64.1% 111174 ~ 5% lkp-snb01/hackbench/50%-threads-socket > > > 162245 ~ 3% +94.1% 314885 ~ 6% TOTAL proc-vmstat.numa_hint_faults_local > > > > Hi Aaron, > > > > Jirka Hladky has reported a regression with that changeset as > > well, and I have already spent some time debugging the issue. > > Let me see if I can still find my SPECjbb2005 copy to see what that > does.
Jirka, what kind of setup were you seeing SPECjbb regressions?
I'm not seeing any on 2 sockets with a single SPECjbb instance, I'll go check one instance per socket now.
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