* cpufreq userspace governor doesn't work for Intel Core 2 Gen 2 CPUs
[not found] <1982761334.142905.1324837801755.JavaMail.mail@webmail18>
@ 2011-12-25 18:36 ` Artem S. Tashkinov
0 siblings, 0 replies; only message in thread
From: Artem S. Tashkinov @ 2011-12-25 18:36 UTC (permalink / raw)
To: linux-kernel; +Cc: davej, cpufreq
Hello,
On my Intel Core i5 CPU with acpi-cpufreq module loaded I do this
# echo 2000000 | tee /sys/devices/system/cpu/cpu*/cpufreq/scaling_setspeed
then
# cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_cur_freq
2000000
2000000
2000000
2000000
so theoretically it should work.
However i7z (http://code.google.com/p/i7z/) shows that CPU frequency is freely floating
and turbo boost gets enabled as soon as I have any discernible load, in other words
userspace CPU frequency driver doesn't work at all and it doesn't really enforce the specified
CPU frequency.
Best wishes,
Artem
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2011-12-25 18:36 UTC | newest]
Thread overview: (only message) (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
[not found] <1982761334.142905.1324837801755.JavaMail.mail@webmail18>
2011-12-25 18:36 ` cpufreq userspace governor doesn't work for Intel Core 2 Gen 2 CPUs Artem S. Tashkinov
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox