7fe2f6399a
CPU power consumption vs performance tuning is no longer limited to CPU frequency switching anymore: deep sleep states, traditional dynamic frequency scaling and hidden turbo/boost frequencies are tied close together and depend on each other. The first two exist on different architectures like PPC, Itanium and ARM, the latter (so far) only on X86. On X86 the APU (CPU+GPU) will only run most efficiently if CPU and GPU has proper power management in place. Users and Developers want to have *one* tool to get an overview what their system supports and to monitor and debug CPU power management in detail. The tool should compile and work on as many architectures as possible. Once this tool stabilizes a bit, it is intended to replace the Intel-specific tools in tools/power/x86 Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
50 lines
1.6 KiB
Plaintext
50 lines
1.6 KiB
Plaintext
The cpufrequtils package (homepage:
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http://www.kernel.org/pub/linux/utils/kernel/cpufreq/cpufrequtils.html )
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consists of the following elements:
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requirements
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------------
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On x86 pciutils is needed at runtime (-lpci).
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For compilation pciutils-devel (pci/pci.h) and a gcc version
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providing cpuid.h is needed.
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For both it's not explicitly checked for (yet).
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libcpufreq
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----------
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"libcpufreq" is a library which offers a unified access method for userspace
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tools and programs to the cpufreq core and drivers in the Linux kernel. This
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allows for code reduction in userspace tools, a clean implementation of
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the interaction to the cpufreq core, and support for both the sysfs and proc
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interfaces [depending on configuration, see below].
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compilation and installation
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----------------------------
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make
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su
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make install
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should suffice on most systems. It builds default libcpufreq,
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cpufreq-set and cpufreq-info files and installs them in /usr/lib and
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/usr/bin, respectively. If you want to set up the paths differently and/or
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want to configure the package to your specific needs, you need to open
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"Makefile" with an editor of your choice and edit the block marked
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CONFIGURATION.
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THANKS
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------
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Many thanks to Mattia Dongili who wrote the autotoolization and
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libtoolization, the manpages and the italian language file for cpufrequtils;
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to Dave Jones for his feedback and his dump_psb tool; to Bruno Ducrot for his
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powernow-k8-decode and intel_gsic tools as well as the french language file;
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and to various others commenting on the previous (pre-)releases of
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cpufrequtils.
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Dominik Brodowski
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