Dear all, Thank you for your information.
From: [EMAIL PROTECTED] Subject: Re: Pentium 3 Clock Frequency Control Date: Sun, 28 Jan 2007 00:14:54 +0500 Message-ID: <[EMAIL PROTECTED]> applecom> FK <[EMAIL PROTECTED]> wrote: applecom> applecom> > Is it posible to control Pentium 3 clock frequency on FreeBSD? applecom> > The purpose is to reduce the power consumption and lengthen battery applecom> > life. applecom> > In addition, how can we know what speed of cpu clock frequecy a cpu applecom> > supports and what speed a cpu take at any given time? I suppose applecom> > that a command which returns each information exist. applecom> > Well, a couple years ago I patched to, if I remember correctly, applecom> > 5.4 kernel and it made this need possible at least on Pentium M. applecom> > I tried to find the web page but I failed. applecom> > I am using FreeBSD6.0-RELEASE now. applecom> applecom> Look at applecom> http://lists.freebsd.org/pipermail/freebsd-acpi/2005-March/001346.html applecom> Hope it helps. I thought cpufreq.ko is a driver for cpu frequecy control, as its man page says. I loaded it to the kernel, with nothing changed like below. The output of my sysctl is differen from the website you showed me. The sysctl of his mentioned acpi, which I disabled. I chose apm, because it turned off the TFT backlight, which acpi failed. TFT backlight off is also critical for the power-saving. Any suggetions? Still, I would like to know what cpu the cpufreq.ko supports. Its man page does not say anything. And I would like to know whether we have any other drivers on which this function is implemented. -- FK. -- Quoted from Man -- DESCRIPTION The cpufreq driver provides a unified kernel and user interface to CPU frequency control drivers. It combines multiple drivers offering differ- ent settings into a single interface of all possible levels. Users can access this interface directly via sysctl(8) or by indicating to /etc/rc.d/power_profile that it should switch settings when the AC line state changes via rc.conf(5). -- End of quatation -- >sysctl dev.cpu dev.cpu.0.%driver: cpu dev.cpu.0.%parent: legacy0 >sysctl dev | grep apm dev.apm.0.%desc: APM BIOS dev.apm.0.%driver: apm dev.apm.0.%parent: legacy0 >kldstat Id Refs Address Size Name 1 12 0xc0400000 3d5e94 kernel 2 1 0xc07d6000 51f8 snd_t4dwave.ko 3 2 0xc07dc000 1d9c8 sound.ko 4 1 0xc07fa000 57ac apm.ko 5 2 0xc15d7000 c000 ipfw.ko 6 1 0xc15e5000 4000 ipdivert.ko 7 1 0xc163b000 4000 logo_saver.ko 8 1 0xc1643000 15000 linux.ko 9 1 0xc2011000 8000 cpufreq.ko _______________________________________________ firstname.lastname@example.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"