https://bugzilla.kernel.org/show_bug.cgi?id=51681


Francesco Muzio <[email protected]> changed:

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--- Comment #2 from Francesco Muzio <[email protected]>  2013-01-04 18:53:16 ---
I have two different AMD CPUs with turbo core feature enabled: a Phenom II X6
1055T and a dualcore C-70

both have the same behaviour: if I read the frequency value from
/sys/devices/system/cpu/*/cpufreq/* or /proc/cpuinfo I see the cores to never
reach the "turbo" frequency. 
But the software cpufreq-aperf (found in the cpufrequtils package on a Debian
system) can show me these peaks, expecially if I force 5 cores to powersave and
1 on performance governor

for use cpuafreq-aper must be load the msr kernel module, I think the Turbo
frequency is an internal feature of a CPU, difficult to control and monitor

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