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APolozov
Tux's lil' helper
Tux's lil' helper


Joined: 28 Sep 2006
Posts: 129
Location: Voronezh, Russia

PostPosted: Fri Aug 22, 2008 5:50 pm    Post subject: cpufreq Core2Duo Reply with quote

Наступившая жара и отдушина на работе заставили обратить внимание на настройку "энергосбережения".
(Вернее на энергию то накласть, а вот температуру и рёв кулера хотелось поменьше).
Настраивал на работе и дома почти одинаково, разница в модулях руления частотой из-за разных камней.

На работе старенький трёхгиговый пень4 с HT, модуль p4-clockmod бодренько завёлся, частота камня плавает
от 375 до 3000 - всё пучком.

Дома Core2duo E6550 и cpufreq-info выдал
Quote:
cpufrequtils 002: cpufreq-info (C) Dominik Brodowski 2004-2006
Report errors and bugs to linux@brodo.de, please.
analyzing CPU 0:
driver: acpi-cpufreq
CPUs which need to switch frequency at the same time: 0 1
hardware limits: 2.00 GHz - 2.33 GHz
available frequency steps: 2.33 GHz, 2.00 GHz

available cpufreq governors: ondemand, performance
current policy: frequency should be within 2.00 GHz and 2.33 GHz.
The governor "ondemand" may decide which speed to use
within this range.
current CPU frequency is 2.00 GHz (asserted by call to hardware).

Частота тоже плавает, но соответственно всего между двумя значениями, которые друг от друга не очень и отличаются.

Соответственно вопросы: кто виноват и что делать?
Камень других значений не умеет?
Или в ядре какие то параметры не прописаны?

Поисковики ничего не дали (вернее никак не могу внятно сформулировать запрос по существу)
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AntiXpucT
n00b
n00b


Joined: 04 Oct 2008
Posts: 3

PostPosted: Sat Oct 04, 2008 5:13 pm    Post subject: Reply with quote

ну, присмотрись к тому, что выделенно жирным, я так думаю, все станет понятно :)
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ba
l33t
l33t


Joined: 25 May 2003
Posts: 804

PostPosted: Sat Oct 04, 2008 8:47 pm    Post subject: Re: cpufreq Core2Duo Reply with quote

APolozov wrote:
driver: acpi-cpufreq

посмотри нет ли апдейтов биосу
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brezblock
n00b
n00b


Joined: 31 Jan 2008
Posts: 34
Location: Kiev, Ukraine

PostPosted: Mon Oct 06, 2008 7:59 am    Post subject: Reply with quote

http://www.gentoo.org/doc/en/power-management-guide.xml

Quote:
Q: I can change the CPU frequency, but the range is not as wide as in another OS.

A: You can combine frequency scaling with ACPI throttling to get a lower minimum frequency. Notice that throttling doesn't save much energy and is mainly used for thermal management (keeping your laptop cool and quiet). You can read the current throttling state with cat /proc/acpi/processor/CPU/throttling and change it with echo -n "0:x" > /proc/acpi/processor/CPU/limit, where x is one of the Tx states listed in /proc/acpi/processor/CPU/throttling.

_________________
Malakhov Alexey
OpenXlout, q4wine.brezblock.org.ua main developer.
BrezBlock (http://brezblock.org.ua) maintainer
web: http://brezblock.org.ua
BrezBlock, Kiev, Ukraine
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