Talk:Power management/HOWTO
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"Warning package sys-power/cpufreqd is deprecated and has been removed from the portage tree". It is always courteous and best to also advise the reader what is now being used as a replacement for cpufreqd! Else, people spend more time finding such trivial information. --Roger (talk) 00:11, 14 January 2015 (UTC)
- Theodore Ts'o wrote his explanation on Google+:
- * intel_pstate can be disabled at boot-time with kernel arg intel_pstate=disable
- * The problem with the ondemand governor is that it doesn't know the specific capabilities of the CPU
- * Executing some tasks with higher frequency will consume less power than would a lower frequency taking more time e.g. arithmetic stuff, but not true for all tasks e.g. loading something from memory
- * The intel_pstate driver knows the details of the how the CPU works and it does a better job than the generic ACPI solution
- * intel_pstate offers only two governors, powersave and performance. Intel claims that the intel_pstate "powersave" is faster than the generic acpi governor with "performance"