From: Dominik Brodowski <linux@dominikbrodowski.de>
To: linux-kernel@vger.kernel.org, moqua@kurtenba.ch
Subject: Re: cpufreq and p4 prescott
Date: Wed, 12 May 2004 19:14:33 +0200 [thread overview]
Message-ID: <20040512171433.GA10481@dominikbrodowski.de> (raw)
> i have problems scaling down my p4 prescott 2.8 GHz.
You can't scale a prescott, you can only throttle it.
> [ck@holodeck:cpufreq] cat /proc/cpuinfo | grep Mhz
> cpu MHz : 2807.131
> cpu MHz : 2807.131
The cpu MHz entry in /proc/cpuinfo is the same for all CPUs, and no reliable
source to detect the current cpu frequency anyway. Use
/sys/devices/system/cpu/cpu0/scaling_cur_freq or even cpuinfo_cur_freq for
that.[*] So p4-clockmod-throttling does work on your p4 prescott.
Dominik
[*] Available in 2.6.7, hopefully, if Linus merges the latest cpufreq-bk
tree from Dave. It'll be in the next -mm release, though.
next reply other threads:[~2004-05-12 17:16 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-05-12 17:14 Dominik Brodowski [this message]
2004-05-13 9:19 ` clemens kurtenbach
2004-05-13 15:30 ` rutger
2004-05-13 12:06 ` Dominik Brodowski
-- strict thread matches above, loose matches on Subject: below --
2004-05-13 17:39 Dominik Brodowski
2004-05-14 21:47 ` rutger
2004-05-15 6:44 ` Dominik Brodowski
2004-05-15 10:52 ` rutger
2004-05-15 19:41 ` Dominik Brodowski
2004-05-16 13:20 ` Rutger Nijlunsing
2004-05-12 15:28 clemens kurtenbach
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