After reading http://www.bughost.org/pipermail/power/2007-May/000166.html I've filed a bug about Ubuntu's use of ignore_nice_load: https://bugs.launchpad.net/ubuntu/+source/sysvinit/+bug/192303
I understand that due to the "Race to idle", it would actually save power to run nice tasks at full speed. Thus, except in edge cases, such as when the nice task caught in a loop, the ignore_nice_load option is pointless. Would you agree that ignore_nice_load should not be set by default? Secondly, as setting the CPU frequency saves little power during idle, why do you recommend ondemand rather than performance? Also what up_threshold do you recommend? (Ubuntu uses 31% by default, but AFAICT, race to idle would mean that a lower up_threshold would actually save power) Finally, are there older CPUs for which the "conservative" governor would make sense? If so, could you tell me off the top of your head which ones they are? With thanks, -- John C. McCabe-Dansted PhD Student University of Western Australia _______________________________________________ Power mailing list [email protected] http://www.bughost.org/mailman/listinfo/power
