From: Juri Lelli <juri.lelli-5wv7dgnIgG8@public.gmane.org>
To: Mark Brown <broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
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Subject: Re: [PATCH v5 1/8] Documentation: arm: define DT cpu capacity-dmips-mhz bindings
Date: Wed, 15 Jun 2016 15:22:39 +0100 [thread overview]
Message-ID: <20160615142239.GD5981@e106622-lin> (raw)
In-Reply-To: <20160615140447.GB2282-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
On 15/06/16 15:04, Mark Brown wrote:
> On Wed, Jun 15, 2016 at 11:17:50AM +0100, Juri Lelli wrote:
>
> > +CPU capacities are obtained by running a suitable benchmark. This binding makes
> > +no aspersions on the validity or suitability of any particular benchmark, the
> > +final capacity should, however, be:
>
> Makes no guarantees. An aspersion is an insult!
>
Whoops! :-/
Sure, I'll change that.
> > +CPU capacities are obtained by running the Dhrystone benchmark on each CPU at
> > +max frequency. The obtained DMIPS score is then divided by the frequency (in
> > +MHz) at which the benchmark has been run, so that DMIPS/MHz are obtained.
> > +Such values are then normalized w.r.t. the highest score obtained in the
> > +system.
>
> Perhaps worth mentioning that caches and so on should be enabled (based
> on previous experience with people doing bringup)?
OK. I'll add something along this line.
Thanks,
- Juri
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next prev parent reply other threads:[~2016-06-15 14:22 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-15 10:17 [PATCH v5 0/8] CPUs capacity information for heterogeneous systems Juri Lelli
2016-06-15 10:17 ` [PATCH v5 1/8] Documentation: arm: define DT cpu capacity-dmips-mhz bindings Juri Lelli
2016-06-15 12:51 ` Vincent Guittot
[not found] ` <CAKfTPtBnwepf3gpR2zFXHvkaxB_mSiVM1Wv3RD+iuX72HN8bcg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-06-15 14:24 ` Juri Lelli
2016-06-15 14:04 ` Mark Brown
[not found] ` <20160615140447.GB2282-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2016-06-15 14:22 ` Juri Lelli [this message]
2016-06-15 22:11 ` Rob Herring
2016-06-16 8:20 ` Juri Lelli
2016-06-22 16:51 ` Juri Lelli
2016-06-15 10:17 ` [PATCH v5 2/8] arm: parse cpu capacity-dmips-mhz from DT Juri Lelli
2016-06-15 10:17 ` [PATCH v5 3/8] arm, dts: add TC2 cpu capacity-dmips-mhz information Juri Lelli
2016-06-15 10:17 ` [PATCH v5 4/8] arm64: parse cpu capacity-dmips-mhz from DT Juri Lelli
2016-06-15 10:20 ` Mark Brown
[not found] ` <CADRr18P=EOwpZTc-aS=4cCa8B3ObpuqpbNNv+w5Q4shXD6s7HQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-06-15 10:25 ` Juri Lelli
2016-06-15 13:49 ` Mark Brown
2016-06-15 14:48 ` Juri Lelli
2016-06-15 10:17 ` [PATCH v5 5/8] arm64, dts: add Juno cpu capacity-dmips-mhz information Juri Lelli
2016-06-15 10:17 ` [PATCH v5 6/8] arm64, dts: add Juno r2 " Juri Lelli
2016-06-15 10:17 ` [PATCH v5 7/8] arm: add sysfs cpu_capacity attribute Juri Lelli
[not found] ` <1465985877-18271-1-git-send-email-juri.lelli-5wv7dgnIgG8@public.gmane.org>
2016-06-15 10:17 ` [PATCH v5 8/8] arm64: " Juri Lelli
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