On Thu, Jul 29, 2010 at 8:20 PM, Christian Jaeger <chr...@gmail.com> wrote: > How do you read the possible cpu frequencies? > > Your kernel needs cpufreq support and ondemand, powersave, etc. > governors; check with > cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies > cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors > cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor > > Although with some hardware AFAIK other drivers than cpufreq are used, > I don't know for Atom. >
Hi Chris, Available frequencies are taken from /sys/devices/system/cpu/cpu0/freq/available_scaling_frequencies, in addition powertop shows the same information. Governors are all compiled into the kernel, and switching between them by echoing "conservative" or "ondemand" to /sys/devices/system/cpu/cpu0/freq/current_scaling_governor works. I haven't tried user space yet, because I don't have any userspace tools installed right now to change cpufreq. I'll remedy that this weekend and see if it makes any difference. Currently I'm using the acpi_cpufreq built into the kernel, however a few other intel related ones like p4 and even those marked as deprecated are built as modules. Appreciate the input, AM -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/aanlktinwxfwgrmvp+bghixqf8owqgprhrs3d3xt=b...@mail.gmail.com
