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Date: Sat, 1 Dec 2007 02:17:40 -0800 From: Andrew Morton <akpm@...ux-foundation.org> To: Mark Lord <lkml@....ca> Cc: Arjan van de Ven <arjan@...radead.org>, "Pallipadi, Venkatesh" <venkatesh.pallipadi@...el.com>, abelay@...ell.com, lenb@...nel.org, mlord@...ox.com, rjw@...k.pl, linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org Subject: Re: + restore-missing-sysfs-max_cstate-attr.patch added to -mm tree On Fri, 30 Nov 2007 22:14:08 -0500 Mark Lord <lkml@....ca> wrote: > > latency. If your app cant take any latency, you should set those... and > > the side effect is that the kernel will not do long-latency C-states or > > P-state transitions.. > .. > > I don't mind the cpufreq changing (actually, I want it to drop in cpugfreq > to save power and keep the fan off), but the C-states just kill this app. semi-OT: I was finding that disabling cpufreq altogether on the Vaio speeds up `quilt push 1000' by a lot - around 30% iirc. There do seem to be some unsophisticated decisions in there and we're losing quite a bit of performance as a result. -- 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/
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