From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: multipart/mixed; boundary="===============0106906250836730411==" MIME-Version: 1.0 From: Mel Gorman To: lkp@lists.01.org Subject: Re: [sched/numa] f6183ef98b: phoronix-test-suite.aom-av1.0.frames_per_second -25.0% regression Date: Thu, 27 Feb 2020 09:06:40 +0000 Message-ID: <20200227090640.GF3818@techsingularity.net> In-Reply-To: List-Id: --===============0106906250836730411== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable On Thu, Feb 27, 2020 at 01:25:27PM +0800, Rong Chen wrote: > = > = > On 2/26/20 4:33 PM, Mel Gorman wrote: > > On Wed, Feb 26, 2020 at 09:03:26AM +0100, Vincent Guittot wrote: > > > Hi Rong, > > > = > > > On Wed, 26 Feb 2020 at 02:33, kernel test robot wrote: > > > > Greeting, > > > > = > > > > FYI, we noticed a -25.0% regression of phoronix-test-suite.aom-av1.= 0.frames_per_second due to commit: > > > > = > > > > = > > > > commit: f6183ef98bba39a5de563d4ab4bc889ff2b600d7 ("sched/numa: repl= ace runnable_load_avg by load_avg") > > > > https://git.kernel.org/cgit/linux/kernel/git/mel/linux.git sched-lb= numa-rewrite-v2r6 > > > The following patches in the branch recover the perf regression. Do > > > you see regression on the whole branch ? > > > = > > If not, include "sched/fair: fix statistics for find_idlest_group" on t= op, > > particularly if the workload is configured to use threads >=3D nr_cpus. > > = > = > Hi Gorman, > = > The regression is still exist on commit "sched/fair: fix statistics for > find_idlest_group". > = > $ git log --oneline -2 db79824c2038adc60526970552242420386ed5e2 > db79824c2038a sched/fair: fix statistics for find_idlest_group() > b92430cf87ebb sched/numa: Stop an exhastive search if a reasonable swap > candidate or idle CPU is found > = I failed to notice that you're testing v2 of the patch series and this is severely out of date -- the branch doesn't even exist on git.kernel.org any more. It was v6 that was ultimately picked up but even if I push the branch I tested, it's unique as it's a rebased tip/sched/core. I think it's better to check what's currently in git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git sched/core. Commit a0f03b617c3b2644d3d47bf7d9e60aed01bd5b10 is the latest version that is aiming for the next merge window but note that it's missing "sched/fair: fix statistics for find_idlest_group". -- = Mel Gorman SUSE Labs --===============0106906250836730411==--