[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Message-ID: <5035E77A.4010107@intel.com>
Date: Thu, 23 Aug 2012 16:19:06 +0800
From: Alex Shi <alex.shi@...el.com>
To: Ingo Molnar <mingo@...nel.org>
CC: Matthew Garrett <mjg59@...f.ucam.org>,
Arjan van de Ven <arjan@...ux.intel.com>,
Peter Zijlstra <a.p.zijlstra@...llo.nl>,
Suresh Siddha <suresh.b.siddha@...el.com>,
vincent.guittot@...aro.org, svaidy@...ux.vnet.ibm.com,
Andrew Morton <akpm@...ux-foundation.org>,
Linus Torvalds <torvalds@...ux-foundation.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
Thomas Gleixner <tglx@...utronix.de>,
Paul Turner <pjt@...gle.com>
Subject: Re: [discussion]sched: a rough proposal to enable power saving in
scheduler
On 08/22/2012 05:10 PM, Ingo Molnar wrote:
>
> * Matthew Garrett <mjg59@...f.ucam.org> wrote:
>
>> [...]
>>
>> Our power consumption is worse than under other operating
>> systems is almost entirely because only one of our three GPU
>> drivers implements any kind of useful power management. [...]
>
> ... and because our CPU frequency and C state selection logic is
> doing pretty much the worst possible decisions (on x86 at
> least).
>
> Regardless, you cannot possibly seriously suggest that because
> there's even greater suckage elsewhere for some workloads we
> should not even bother with improving the situation here.
>
> Anyway, I agree with Alan that actual numbers matter.
Sure. we'd better make ideas into code, and then let benchmarks and data
speaking.
>
> Thanks,
>
> Ingo
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists