From: Andrew Morton <akpm@linux-foundation.org>
To: Mark Lord <lkml@rtr.ca>
Cc: Arjan van de Ven <arjan@infradead.org>,
"Pallipadi, Venkatesh" <venkatesh.pallipadi@intel.com>,
abelay@novell.com, lenb@kernel.org, mlord@pobox.com, rjw@sisk.pl,
linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org
Subject: Re: + restore-missing-sysfs-max_cstate-attr.patch added to -mm tree
Date: Sat, 1 Dec 2007 02:17:40 -0800 [thread overview]
Message-ID: <20071201021740.2e66b918.akpm@linux-foundation.org> (raw)
In-Reply-To: <4750D180.6080001@rtr.ca>
On Fri, 30 Nov 2007 22:14:08 -0500 Mark Lord <lkml@rtr.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.
next prev parent reply other threads:[~2007-12-01 10:18 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-30 21:53 + restore-missing-sysfs-max_cstate-attr.patch added to -mm tree akpm
[not found] ` <924EFEDD5F540B4284297C4DC59F3DEE2FAE6A@orsmsx423.amr.corp.intel.com>
2007-11-30 22:20 ` Andrew Morton
2007-11-30 22:37 ` Pallipadi, Venkatesh
2007-11-30 22:37 ` Pallipadi, Venkatesh
2007-12-01 2:52 ` Mark Lord
2007-12-01 3:02 ` Arjan van de Ven
2007-12-01 3:14 ` Mark Lord
2007-12-01 3:18 ` Arjan van de Ven
2007-12-01 3:31 ` Mark Lord
2007-12-01 3:44 ` Mark Lord
2007-12-01 3:48 ` Mark Lord
2007-12-01 4:02 ` Mark Lord
2007-12-01 4:31 ` Mark Lord
2007-12-01 23:43 ` 20000+ wake-ups/second in 2.6.24. Bug? Mark Lord
2007-12-01 23:46 ` Arjan van de Ven
2007-12-01 23:55 ` Mark Lord
2007-12-02 0:13 ` Arjan van de Ven
2007-12-02 1:10 ` Andres Freund
2007-12-02 0:20 ` Rafael J. Wysocki
2008-02-04 17:29 ` Mark Lord
2008-02-04 17:50 ` Arjan van de Ven
2008-02-04 19:17 ` Mark Lord
2007-12-02 14:41 ` Adrian Bunk
2007-12-02 14:59 ` Mark Lord
2007-12-02 15:12 ` Adrian Bunk
2007-12-02 15:45 ` Mark Lord
2007-12-02 15:45 ` Mark Lord
2007-12-02 15:49 ` Mark Lord
2008-01-02 23:41 ` + restore-missing-sysfs-max_cstate-attr.patch added to -mm tree Mark Lord
2008-01-03 0:06 ` Pallipadi, Venkatesh
2008-01-03 0:06 ` Pallipadi, Venkatesh
2008-01-03 0:51 ` Andrew Morton
2008-01-03 0:51 ` Andrew Morton
2008-01-03 1:12 ` Pallipadi, Venkatesh
2008-01-03 1:12 ` Pallipadi, Venkatesh
2008-01-03 4:25 ` Mark Lord
2008-01-03 4:18 ` Mark Lord
2008-01-04 2:16 ` Venki Pallipadi
2008-01-04 3:16 ` Mark Lord
2008-01-04 21:52 ` Mark Lord
2008-01-04 21:59 ` Pallipadi, Venkatesh
2008-01-04 21:59 ` Pallipadi, Venkatesh
2008-01-05 16:27 ` Mark Lord
2008-01-06 21:34 ` Mark Lord
2008-01-07 7:18 ` Andrew Morton
2008-01-07 14:07 ` Arjan van de Ven
2008-01-07 15:07 ` Mark Lord
2008-01-07 14:18 ` Pallipadi, Venkatesh
2008-01-07 14:18 ` Pallipadi, Venkatesh
2008-01-07 15:06 ` Mark Lord
2008-01-07 19:12 ` Len Brown
2008-01-07 21:33 ` Mark Lord
2008-01-07 22:43 ` Len Brown
2007-12-01 10:17 ` Andrew Morton [this message]
2007-12-01 16:30 ` Arjan van de Ven
2007-12-05 11:17 ` Pavel Machek
2007-12-07 21:38 ` Pallipadi, Venkatesh
2007-12-07 21:38 ` Pallipadi, Venkatesh
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