From: Matthew Garrett <mjg59@srcf.ucam.org>
To: Andi Kleen <andi@firstfloor.org>
Cc: Peter Zijlstra <peterz@infradead.org>,
dipankar@in.ibm.com, balbir@linux.vnet.ibm.com,
Linux Kernel <linux-kernel@vger.kernel.org>,
Suresh B Siddha <suresh.b.siddha@intel.com>,
Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>,
Ingo Molnar <mingo@elte.hu>, Vatsa <vatsa@linux.vnet.ibm.com>,
Gautham R Shenoy <ego@in.ibm.com>
Subject: Re: [RFC v1] Tunable sched_mc_power_savings=n
Date: Sat, 28 Jun 2008 13:22:37 +0100 [thread overview]
Message-ID: <20080628122237.GA22099@srcf.ucam.org> (raw)
In-Reply-To: <48649F84.4090501@firstfloor.org>
On Fri, Jun 27, 2008 at 10:06:28AM +0200, Andi Kleen wrote:
> Ok distcc is a special case, but it doesn't apply to a lot of other
> processes (do you really want your CPU to crank up for "updatedb" or
> beagle or some backup job for example?)
If something's CPU-bound, then you almost certainly want to speed the
CPU up. There's no power advantage to leaving it at a low frequency. I'd
be surprised if things like beagle or updatedb are CPU-bound, though.
--
Matthew Garrett | mjg59@srcf.ucam.org
next prev parent reply other threads:[~2008-06-28 12:26 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-25 19:11 [RFC v1] Tunable sched_mc_power_savings=n Vaidyanathan Srinivasan
2008-06-26 13:49 ` Andi Kleen
2008-06-26 15:01 ` Dipankar Sarma
2008-06-26 18:31 ` Vaidyanathan Srinivasan
2008-06-26 15:01 ` Balbir Singh
2008-06-26 18:08 ` Andi Kleen
2008-06-26 18:52 ` Vaidyanathan Srinivasan
2008-06-26 19:37 ` David Collier-Brown
2008-06-27 6:50 ` Vaidyanathan Srinivasan
2008-06-26 20:17 ` Andi Kleen
2008-06-26 21:00 ` Dipankar Sarma
2008-06-26 21:37 ` Andi Kleen
2008-06-26 21:43 ` Peter Zijlstra
2008-06-26 22:38 ` Andi Kleen
2008-06-27 6:24 ` Vaidyanathan Srinivasan
2008-06-27 7:51 ` Peter Zijlstra
2008-06-27 8:06 ` Andi Kleen
2008-06-28 11:35 ` Tim Connors
2008-06-28 11:55 ` Andi Kleen
2008-06-28 12:22 ` Matthew Garrett [this message]
2008-06-28 12:36 ` Andi Kleen
2008-06-28 12:53 ` Matthew Garrett
2008-06-28 11:22 ` Tim Connors
2008-06-29 18:02 ` David Collier-Brown
2008-06-30 4:57 ` Vaidyanathan Srinivasan
2008-06-30 5:55 ` Tim Connors
2008-06-30 14:18 ` David Collier-Brown
2008-06-30 14:31 ` Andi Kleen
2008-06-27 4:54 ` Dipankar Sarma
2008-06-27 8:03 ` Andi Kleen
2008-06-30 16:10 ` Dipankar Sarma
2008-06-27 7:19 ` Vaidyanathan Srinivasan
2008-06-27 4:15 ` Balbir Singh
2008-06-27 8:08 ` KOSAKI Motohiro
2008-06-27 8:50 ` Vaidyanathan Srinivasan
2008-06-27 12:54 ` David Collier-Brown
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