랩톱 (Linux 실행)에서 CPU 주파수를 변경하려고하는데 성공하지 못했습니다.
세부 사항은 다음과 같습니다.
# uname -a
Linux yoga 3.12.21-gentoo-r1 #4 SMP Thu Jul 10 17:32:31 HKT 2014 x86_64 Intel(R) Core(TM) i5-3317U CPU @ 1.70GHz GenuineIntel GNU/Linux
# cpufreq-info
cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009
Report errors and bugs to cpufreq@vger.kernel.org, please.
analyzing CPU 0:
driver: intel_pstate
CPUs which run at the same hardware frequency: 0
CPUs which need to have their frequency coordinated by software: 0
maximum transition latency: 0.97 ms.
hardware limits: 800 MHz - 2.60 GHz
available cpufreq governors: performance, powersave
current policy: frequency should be within 800 MHz and 2.60 GHz.
The governor "powersave" may decide which speed to use
within this range.
current CPU frequency is 2.42 GHz (asserted by call to hardware).
(similar information for cpus 1, 2 and 3)
# cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors
performance powersave
처음에는 userspace governor를 커널에 내장했지만 모듈로 빌드하려고했습니다 (같은 결과). 위의 명령을 실행하는 동안로드되었으며로드 할 때 시스템 메시지를 찾을 수 없었습니다.
# lsmod
Module Size Used by
cpufreq_userspace 1525 0
(some other modules)
그리고 주파수를 변경하기 위해 시도한 명령은 다음과 같습니다.
# cpufreq-set -f 800MHz
Error setting new values. Common errors:
- Do you have proper administration rights? (super-user?)
- Is the governor you requested available and modprobed?
- Trying to set an invalid policy?
- Trying to set a specific frequency, but userspace governor is not available,
for example because of hardware which cannot be set to a specific frequency
or because the userspace governor isn't loaded?
# cpufreq-set -g userspace
Error setting new values. Common errors:
- Do you have proper administration rights? (super-user?)
- Is the governor you requested available and modprobed?
- Trying to set an invalid policy?
- Trying to set a specific frequency, but userspace governor is not available,
for example because of hardware which cannot be set to a specific frequency
or because the userspace governor isn't loaded?
어떤 아이디어?
@don_crissti 나는 cpupower에 대해 몰랐다; 다소 불쾌한 구문이 있지만 cpufreq보다 더 잘 작동하는 것 같습니다. 나는 지금 주파수를 설정할 수 있습니다 :) 고마워하고 답변을 게시해야합니다 (정말 포인트를 원하지 않는 한).
—
aditsu
echo 1 > /sys/devices/system/cpu/intel_pstate/no_turbo
인스턴트 커널 패닉을 시도 하고 얻었습니다intel_pstate=disable
. Btw, 귀하의 의견을 답변으로 만들어보십시오.