mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-28 15:20:41 +00:00
e091abc7f9
The command "cpupower frequency-info" can be used when using cpupower to
monitor and test processor behaviour to determine if the processor is
behaving as expected. This data can be compared to the output of
/proc/cpuinfo or the output of
/sys/devices/system/cpu/cpuX/cpufreq/scaling_available_frequencies
to determine if the cpu is in an expected state.
When doing this I noticed comparison test failures due to the way the
data is displayed in cpupower. For example,
[root@intel-s3e37-02 cpupower]# cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies
2262000 2261000 2128000
|
||
---|---|---|
.. | ||
bench | ||
debug | ||
lib | ||
man | ||
po | ||
utils | ||
.gitignore | ||
Makefile | ||
README | ||
ToDo |
The cpufrequtils package (homepage: http://www.kernel.org/pub/linux/utils/kernel/cpufreq/cpufrequtils.html ) consists of the following elements: requirements ------------ On x86 pciutils is needed at runtime (-lpci). For compilation pciutils-devel (pci/pci.h) and a gcc version providing cpuid.h is needed. For both it's not explicitly checked for (yet). libcpufreq ---------- "libcpufreq" is a library which offers a unified access method for userspace tools and programs to the cpufreq core and drivers in the Linux kernel. This allows for code reduction in userspace tools, a clean implementation of the interaction to the cpufreq core, and support for both the sysfs and proc interfaces [depending on configuration, see below]. compilation and installation ---------------------------- make su make install should suffice on most systems. It builds default libcpufreq, cpufreq-set and cpufreq-info files and installs them in /usr/lib and /usr/bin, respectively. If you want to set up the paths differently and/or want to configure the package to your specific needs, you need to open "Makefile" with an editor of your choice and edit the block marked CONFIGURATION. THANKS ------ Many thanks to Mattia Dongili who wrote the autotoolization and libtoolization, the manpages and the italian language file for cpufrequtils; to Dave Jones for his feedback and his dump_psb tool; to Bruno Ducrot for his powernow-k8-decode and intel_gsic tools as well as the french language file; and to various others commenting on the previous (pre-)releases of cpufrequtils. Dominik Brodowski