From: Morten Rasmussen <morten.rasmussen@arm.com>
To: Koan-Sin Tan <koansin.tan@gmail.com>
Cc: dietmar.eggemann@arm.com, yuyang.du@intel.com,
vincent.guittot@linaro.org, mgalbraith@suse.de,
linux-kernel@vger.kernel.org, peterz@infradead.org,
mingo@redhat.com
Subject: Re: [PATCH v2 00/13] sched: Clean-ups and asymmetric cpu capacity support
Date: Thu, 30 Jun 2016 08:53:58 +0100 [thread overview]
Message-ID: <20160630075357.GB12540@e105550-lin.cambridge.arm.com> (raw)
In-Reply-To: <1467109227-25635-1-git-send-email-koansin.tan@gmail.com>
On Tue, Jun 28, 2016 at 06:20:27PM +0800, Koan-Sin Tan wrote:
> Hi,
>
> I tested these patches with patches from your preview branch [1] and some
> platform specific patches on MediaTek MT8173 EVB (integrated branch at [2])
>
> > Test 0:
> > for i in `seq 1 10`; \
> > do sysbench --test=cpu --max-time=3 --num-threads=1 run; \
> > done \
> > | awk '{if ($4=="events:") {print $5; sum +=$5; runs +=1}} \
> > END {print "Average events: " sum/runs}'
> > Target: ARM TC2 (2xA15+3xA7)
> >
> > (Higher is better)
> > tip: Average events: 146.9
> > patch: Average events: 217.9
>
> Target: MediaTek MT8173 EVB (2xA53+2xA72)
>
> w/o capacity patches:
> 274.7 (actually, it varies a lot between 194 and 329
The variation you mention is consistent with our observations on both
TC2 and Juno. Most times you get either big or little performance, and
occasionally a number in between.
> w/ capacity patches:
> 328.7
>
> > Test 1:
> > perf stat --null --repeat 10 -- \
> > perf bench sched messaging -g 50 -l 5000
> >
> > Target: Intel IVB-EP (2*10*2)
> >
> > tip: 4.861970420 seconds time elapsed ( +- 1.39% )
> > patch: 4.886204224 seconds time elapsed ( +- 0.75% )
> >
> > Target: ARM TC2 A7-only (3xA7) (-l 1000)
> >
> > tip: 61.485682596 seconds time elapsed ( +- 0.07% )
> > patch: 62.667950130 seconds time elapsed ( +- 0.36% )
> >
>
> Target: MediaTek MT8173 EVB A53-only (2xA7) (-l 1000)
>
> w/o capacity patches:
> 72.663181227 seconds time elapsed ( +- 1.62% )
> 71.502263666 seconds time elapsed ( +- 0.45% )
> 73.707466212 seconds time elapsed ( +- 0.99% )
> 73.623523997 seconds time elapsed ( +- 1.85% )
> 74.150137066 seconds time elapsed ( +- 1.41% )
>
> w/ capacity patches:
> 70.360055056 seconds time elapsed ( +- 1.58% )
> 69.884793481 seconds time elapsed ( +- 0.78% )
> 73.395917166 seconds time elapsed ( +- 1.86% )
> 70.082440427 seconds time elapsed ( +- 1.66% )
> 69.365401758 seconds time elapsed ( +- 0.80% )
>
> Tested-by: Koan-Sin Tan <freedom.tan@mediatek.com>
Thanks for testing.
Morten
next prev parent reply other threads:[~2016-06-30 7:52 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-22 17:03 [PATCH v2 00/13] sched: Clean-ups and asymmetric cpu capacity support Morten Rasmussen
2016-06-22 17:03 ` [PATCH v2 01/13] sched: Fix power to capacity renaming in comment Morten Rasmussen
2016-08-10 18:03 ` [tip:sched/core] sched/core: " tip-bot for Morten Rasmussen
2016-06-22 17:03 ` [PATCH v2 02/13] sched/fair: Consistent use of prev_cpu in wakeup path Morten Rasmussen
2016-06-22 18:04 ` Rik van Riel
2016-06-23 9:56 ` Morten Rasmussen
2016-06-23 12:24 ` Rik van Riel
2016-08-10 18:03 ` [tip:sched/core] sched/fair: Make the use of prev_cpu consistent in the " tip-bot for Morten Rasmussen
2016-06-22 17:03 ` [PATCH v2 03/13] sched/fair: Optimize find_idlest_cpu() when there is no choice Morten Rasmussen
2016-07-13 12:20 ` Vincent Guittot
2016-08-10 18:03 ` [tip:sched/core] " tip-bot for Morten Rasmussen
2016-06-22 17:03 ` [PATCH v2 04/13] sched: Introduce SD_ASYM_CPUCAPACITY sched_domain topology flag Morten Rasmussen
2016-07-11 9:55 ` Peter Zijlstra
2016-07-11 10:42 ` Morten Rasmussen
2016-06-22 17:03 ` [PATCH v2 05/13] sched: Enable SD_BALANCE_WAKE for asymmetric capacity systems Morten Rasmussen
2016-07-11 10:04 ` Peter Zijlstra
2016-07-11 10:37 ` Morten Rasmussen
2016-07-11 11:04 ` Morten Rasmussen
2016-07-11 11:24 ` Peter Zijlstra
2016-07-12 14:26 ` Morten Rasmussen
2016-06-22 17:03 ` [PATCH v2 06/13] sched: Store maximum per-cpu capacity in root domain Morten Rasmussen
2016-07-11 10:18 ` Peter Zijlstra
2016-07-11 16:16 ` Dietmar Eggemann
2016-07-12 11:42 ` Peter Zijlstra
2016-07-13 11:18 ` Dietmar Eggemann
2016-07-13 12:40 ` Vincent Guittot
2016-07-13 13:48 ` Dietmar Eggemann
2016-07-13 16:37 ` Morten Rasmussen
2016-07-14 13:25 ` Vincent Guittot
2016-07-14 15:15 ` Morten Rasmussen
2016-07-15 11:46 ` Morten Rasmussen
2016-07-15 13:39 ` Vincent Guittot
2016-07-15 16:02 ` Morten Rasmussen
2016-07-18 12:48 ` Vincent Guittot
2016-07-18 15:11 ` Morten Rasmussen
2016-06-22 17:03 ` [PATCH v2 07/13] sched/fair: Let asymmetric cpu configurations balance at wake-up Morten Rasmussen
2016-07-11 11:13 ` Peter Zijlstra
2016-07-11 12:32 ` Morten Rasmussen
2016-07-13 12:56 ` Vincent Guittot
2016-07-13 16:14 ` Morten Rasmussen
2016-07-14 13:45 ` Vincent Guittot
2016-07-15 8:37 ` Morten Rasmussen
2016-06-22 17:03 ` [PATCH v2 08/13] sched/fair: Compute task/cpu utilization at wake-up more correctly Morten Rasmussen
2016-06-22 17:03 ` [PATCH v2 09/13] sched/fair: Consider spare capacity in find_idlest_group() Morten Rasmussen
2016-06-22 17:03 ` [PATCH v2 10/13] sched: Add per-cpu max capacity to sched_group_capacity Morten Rasmussen
2016-06-22 17:03 ` [PATCH v2 11/13] sched/fair: Avoid pulling tasks from non-overloaded higher capacity groups Morten Rasmussen
2016-06-23 21:20 ` Sai Gurrappadi
2016-06-30 7:49 ` Morten Rasmussen
2016-07-14 16:39 ` Sai Gurrappadi
2016-07-15 8:39 ` Morten Rasmussen
2016-07-12 12:59 ` Peter Zijlstra
2016-07-12 14:34 ` Morten Rasmussen
2016-06-22 17:03 ` [PATCH v2 12/13] arm: Set SD_ASYM_CPUCAPACITY for big.LITTLE platforms Morten Rasmussen
2016-06-22 17:03 ` [PATCH v2 13/13] arm: Update arch_scale_cpu_capacity() to reflect change to define Morten Rasmussen
2016-06-28 10:20 ` [PATCH v2 00/13] sched: Clean-ups and asymmetric cpu capacity support Koan-Sin Tan
2016-06-30 7:53 ` Morten Rasmussen [this message]
2016-07-08 7:35 ` KEITA KOBAYASHI
2016-07-08 8:18 ` Morten Rasmussen
2016-07-11 8:33 ` Morten Rasmussen
2016-07-11 12:44 ` Vincent Guittot
2016-07-12 13:25 ` Peter Zijlstra
2016-07-12 14:39 ` Morten Rasmussen
2016-07-13 12:06 ` Vincent Guittot
2016-07-13 15:54 ` Morten Rasmussen
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