Date: Tue, 22 May 2007 19:35:10 +0300 From: Ghirai <ghirai@ghirai.com> To: Ian Smith <smithi@nimnet.asn.au>, freebsd-questions@freebsd.org Subject: Re[2]: notebook cpu throttling Message-ID: <1668991888.20070522193510@ghirai.com> In-Reply-To: <Pine.BSF.3.96.1070522225006.18805A-100000@gaia.nimnet.asn.au> References: <20070521230318.3337C16A4A5@hub.freebsd.org> <Pine.BSF.3.96.1070522225006.18805A-100000@gaia.nimnet.asn.au>
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Hello Ian, Tuesday, May 22, 2007, 5:08:19 PM, you wrote: > On Tue, 22 May 2007 00:56:08 +0300 Ghirai <ghirai@ghirai.com> wrote: >> Hello Roland, >> >> Monday, May 21, 2007, 11:08:13 PM, you wrote: >> >> > On Mon, May 21, 2007 at 09:52:22PM +0300, Ghirai wrote: >> >> Hello list, >> >> >> >> I'm running 6.2-RELEASE, SMP, on a >> >> Fujitsu-Siemens Amilo Pro v3205 (Core Duo). >> >> >> >> Everything works fine, except the cpu throttling, >> >> which makes the fan start quite often. >> >> >> >> Is there any way to fix this? >> >> > You need to do three things (as root); >> >> > 1) Load the cpufreq module 'kldload cpufreq'. >> > 2) Put 'powerd_enable="YES"' in your /etc/rc.conf >> > 2) Start powerd: '/etc/rc.d/powerd start' >> >> > Roland >> >> Thanks for the hint. >> >> I did that, but now xorg constantly uses 20-30% CPU. >> >> CPUs were running cooler indeed, but everything ran jerky, >> because of the xorg cpu usage. >> >> Note that i haven't upgraded to 7.2 yet, >> but i don't think this is the problem. > This might not really indicate any problem. Firstly, what are your > # sysctl dev.cpu.0.freq_levels > Try watching the current cpu speed (dev.cpu.0.freq) while running under > powerd. You can watch it shift under various loads by running 'powerd > -v' in foreground, show it by running a script sleeping for eg a minute, > or use (say) gkrellm with gkfreq plugin to display cpu speed constantly. > Point being, if powerd has selected your lowest cpu frequency because > load is less than default (or as specified by -i and -r switches) and > this is (say) 1/4 of full speed, then something that normally showed 5% > cpu will now show as using 20% (of available cpu cycles at that speed) > You can tune your powerd idle levels more towards performance, and/or > you can set a higher minimum cpu freq with sysctl debug.cpufreq.lowest > from among your available levels. > powerd's default shiftpoints work on my T23, but it's only a 2-speed :) > Cheers, Ian I suspected this; xorg just reporting to use 20-30% cpu doesn't bother my, what bothers me is the fact that mouse cursor and everything moves jerky. I'll try to raise the min. freq., maybe powerd lowers it too much.. -- Best regards, Ghirai.
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