severity 602052 normal Ludovic,
On Tue, Nov 02, 2010 at 10:53:37AM +0100, Ludovic Brenta wrote: > After reading this bug report, I removed powernowd from my system. The > CPU frequency immediately jumped from 800 MHz to the maximum 2000 MHz > and stayed there, even if the machine was idle. I reinstalled powernowd > and the CPU frequency went back to 1800, then 1600, then 800 MHz in a > matter of seconds. > > If this package is obsolete and replaced by the kernel, how should I > configure my kernel to throttle the CPU back, and why is the kernel not > configured to do that out of the box? what does /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor show after deinstallation of powernowd? If it does say performance, that behaviour to be expected. You might want to install cpufrequtils instead. You might want to look at /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors and select a suitable governor, which would be in the order of "ondemand conservative powersave". If ondemand refuses to do anything it should write that to dmesg, which it does when switching latency is too high. The throttling comments in this bug log are entirely bogus. The fact that the *frequency* changes means that there's no throttling involved. Furthermore this bug report is nowhere "serious". Kind regards, Philipp Kern
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