[[PageOutline]] * https://wiki.archlinux.org/index.php/CPU_Frequency_Scaling * [http://d.hatena.ne.jp/kakurasan/20070720/p1 動的にCPUクロックや電圧を変更するcpufreqの概要とcpufreqdデーモンについて - 試験運用中なLinux備忘録] * [http://d.hatena.ne.jp/kakurasan/20080804/p1 cpufreqdでlm_sensorsを使用して、センサの値に応じたクロック・電圧制御を行う - 試験運用中なLinux備忘録] * [https://bugs.archlinux.org/task/15284 FS#15284 : cannot switch to ondemand governor] > {{{ > I have a Intel(R) Pentium(R) 4 CPU 2.66GHz > im using p4-clockmod with ondemand and performance governors, but after upgrading to kernel 2.6.30, i cannot switch to ondemand governor > > from dmesg output i see: > "ondemand governor failed, too long transition latency of HW, fallback to performance governor" > > Additional info: > kernel26 2.6.30-5 > > Steps to reproduce: > cpufreq-set -g ondemand > }}} > * comment by Jan de Groot (JGC) - Saturday, 27 June 2009, 07:33 GMT-4 > * You should not use ondemand with clockmod. The clockmod module has a very high switching latency, that's why it's disabled in 2.6.30. The error message says it all I think. * [https://bbs.archlinux.org/viewtopic.php?id=101464 cpufreq ondemand governor problem with p4-clockmod |SOLVED| (Page 1) / Kernel & Hardware / Arch Linux Forums]