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From: Peter Zijlstra <peterz@infradead.org>
To: Valentin Schneider <valentin.schneider@arm.com>
Cc: Oliver Sang <oliver.sang@intel.com>, 0day robot <lkp@intel.com>,
	Vincent Guittot <vincent.guittot@linaro.org>,
	Dietmar Eggemann <dietmar.eggemann@arm.com>,
	LKML <linux-kernel@vger.kernel.org>,
	lkp@lists.01.org, ying.huang@intel.com, feng.tang@intel.com,
	zhengjun.xing@intel.com,
	Lingutla Chandrasekhar <clingutla@codeaurora.org>,
	Ingo Molnar <mingo@kernel.org>,
	Morten Rasmussen <morten.rasmussen@arm.com>,
	Qais Yousef <qais.yousef@arm.com>,
	Quentin Perret <qperret@google.com>,
	Pavan Kondeti <pkondeti@codeaurora.org>,
	Rik van Riel <riel@surriel.com>,
	aubrey.li@linux.intel.com, yu.c.chen@intel.com
Subject: Re: [sched/fair]  38ac256d1c:  stress-ng.vm-segv.ops_per_sec -13.8% regression
Date: Wed, 21 Apr 2021 14:03:08 +0200	[thread overview]
Message-ID: <YIAUfFXFFY9Jggra@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <87bla8ue3e.mognet@arm.com>

On Wed, Apr 21, 2021 at 11:27:49AM +0100, Valentin Schneider wrote:
> o 2-socket Xeon E5-2690 (x86, 40 cores)
> 
> and found at worse a -0.3% regression and at best a 2% improvement. I know
> that x86 box is somewhat ancient, but it's been my go-to "have I broken
> x86?" test victim for a while :-)

It happens that my main test-box is an E5-2680. I've got a slightly more
modern one too, but that boots like treacle so I end up using the IVB-EP
most :-)

  reply	other threads:[~2021-04-21 12:03 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-07 22:06 [PATCH v5 0/3] sched/fair: load-balance vs capacity margins Valentin Schneider
2021-04-07 22:06 ` [PATCH v5 1/3] sched/fair: Ignore percpu threads for imbalance pulls Valentin Schneider
2021-04-09 11:24   ` [tip: sched/core] " tip-bot2 for Lingutla Chandrasekhar
2021-04-09 12:05   ` tip-bot2 for Lingutla Chandrasekhar
2021-04-09 16:14   ` tip-bot2 for Lingutla Chandrasekhar
2021-04-14  5:21   ` [sched/fair] 38ac256d1c: stress-ng.vm-segv.ops_per_sec -13.8% regression kernel test robot
2021-04-14 17:17     ` Valentin Schneider
2021-04-21  3:20       ` Oliver Sang
2021-04-21 10:27         ` Valentin Schneider
2021-04-21 12:03           ` Peter Zijlstra [this message]
2021-04-22  7:47           ` Oliver Sang
2021-04-22  9:55             ` Valentin Schneider
2021-04-22 20:42               ` Valentin Schneider
2021-04-28 22:00                 ` Valentin Schneider
2021-05-06 16:11                   ` Valentin Schneider
2021-04-07 22:06 ` [PATCH v5 2/3] sched/fair: Clean up active balance nr_balance_failed trickery Valentin Schneider
2021-04-09 11:24   ` [tip: sched/core] " tip-bot2 for Valentin Schneider
2021-04-09 12:05   ` tip-bot2 for Valentin Schneider
2021-04-09 16:14   ` tip-bot2 for Valentin Schneider
2021-04-07 22:06 ` [PATCH v5 3/3] sched/fair: Introduce a CPU capacity comparison helper Valentin Schneider
2021-04-09 11:24   ` [tip: sched/core] " tip-bot2 for Valentin Schneider
2021-04-09 12:05   ` tip-bot2 for Valentin Schneider
2021-04-09 16:14   ` tip-bot2 for Valentin Schneider

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