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Message #03956
[Bug 1158668] Re: Build cpupower from kernel tools
This could probably be handled in the kernel-tools package.
** Changed in: linux (Ubuntu)
Status: Expired => Confirmed
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https://bugs.launchpad.net/bugs/1158668
Title:
Build cpupower from kernel tools
Status in “linux” package in Ubuntu:
Confirmed
Bug description:
Ubuntu supplies the cpufrequtils package, which has been rendered
obsolete by cpupower. It is included in the kernel source as of
linux-3.1 [2], located at tools/power/cpupower/.
I don't think that it is explicitly tied to a particular kernel
version, so it may be best built separately from the kernel packages.
There is no consensus among other distributions: Fedora includes it in
their kernel-tools package; SuSE and RHEL pull from the git repo and
build as a separate cpupower or cpupowerutils package (similar to how
cpufrequtils was done); Arch takes it from the kernel source and
builds it along with other tools into separate packages.
cpupower provides a number of things that cpufrequtils does not, and
is invaluable in a server environment for tuning of power management.
Of particular note is the ability to set perf_bias on Intel
processors; I am not aware of another tool that can do this. It is
also the focus of power utility development, and should be available
on Ubuntu systems.
[1] http://lwn.net/Articles/433002/
[2] http://kernelnewbies.org/Linux_3.1#head-92f86d42a205e6c53d4bf6912a0dfa755f4c01f6
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