Re^2: Current processor frequency?

AFAIK, the rate reported in /proc/cpuinfo is dependent on the specific architecture and kernel version, but usually, it's the cpu frequency at boot time, not the current speed.

See http://lwn.net/Articles/162548/ for instance, though I've no idea how reliable that info is.

"What should it profit a man, if he should win a flame war, yet lose his cool?"

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Re^3: Current processor frequency? by misc (Friar) on Aug 02, 2007 at 00:55 UTC
perhaps it's not as easy I thought.. to me it shows the current frequency, although I've got a smp kernel. (2.6.18) Google said the same for most users. e.g. http://docs.huihoo.com/gentoo/resources/document-listing/power-management-guide.html So I'd guess it's dependent on the kernel version, I wasn't able to find something more specific in the kernel documentation. A short research in the kernel sources didn't answer this, too. What google also told me.. There is more info in the files /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq cpuinfo_cur_freq is only readable by root on my system, so this could lead again into problems. At least my question how the max frequency can be determined has been answered. :-)	[reply]

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Re^3: Current processor frequency?
by misc (Friar) on Aug 02, 2007 at 00:55 UTC

http://docs.huihoo.com/gentoo/resources/document-listing/power-management-guide.html

/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq
/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq
/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq

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