Re: [BUG] P4 HT cpufreq driver doesn't share governor/frequency between siblings

[Dave Jones]

On Mon, Mar 15, 2004 at 11:33:58PM +0100, rutger@xxxxxxxx wrote:
 > Small bugreport, Pentium 4 Hyper-Threaded with SMP kernel (2.6.4-bk
 > from Mar 11) and p4-clockmod module loaded, gives:
 > 
 > # cd /sys/devices/system/cpu
 > # cat cpu*/cpufreq/scaling_governor 
 > performance
 > performance
 > # echo powersave > cpu1/cpufreq/scaling_governor 
 > # cat cpu*/cpufreq/scaling_governor
 > performance
 > powersave
 > 
 > Shouldn't the cpufreq driver be shared between the siblings?

Theoretically, as split-cores become more advanced, we will be able
to save power on unused cores.  With the current P4's I'll bet it
makes little to no difference at all.

		Dave

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