Free frequency software for linux

Wmfreqview is a very simple windowmaker dock applet for Linux 2.6.x with CPU frequency scaling (cpufreq), that shows a graph of the CPU frequency over time.

Wmfreqview project is usefull when you are using dynamic frequency scaling, to monitor how the CPU frequency modulator responds to the CPU load.

You may copy/modify/redistribute this program under the terms of the GNU General Public License version 2 or later. See COPYING if you are a lawyer.

The X code and wmaker integration (which is a substantial part of this program) is taken directly from a simple wmaker dock app template called `wmgeneral by Martijin Pieterse.

cpufrequtils project consists of a library which offers an unified access method for userspace tools and programs to the CPU frequency and voltage scaling (cpufreq) subsystem in the Linux kernel, the "cpufreq-info" and "cpufreq-set" tools to determine and set cpufreq settings, and debug tools helpful if frequency scaling doesnt work as expected.
"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].
"cpufreq-info" determines current cpufreq settings, and provides useful
debug information to users and bug-hunters.
"cpufreq-set" allows to set a specific frequency and/or new cpufreq policies
without having to type "/sys/devices/system/cpu/cpu0/cpufreq" all the time.
Installation:
./configure && make
su
make install
should suffice on most systems. It builds default libcpufreq, cpufreq-set and cpufreq-info files and installs them in /usr/local/lib and /usr/local/bin, respectively. Due to the autotoolization by Mattia Dongili the standard options to make and make install, like "--prefix=/usr", can be passed and (should) work correctly.
Options and dependencies:
./configure by default enables the sysfs interface, but disables the
deprecated /proc interface to the cpufreq core in the Linux kernel. For the sysfs interface to build and work correctly, you need "libsysfs", which is part of the "sysfsutils" package. Current requirement is sysfsutils-1.0.0 or later.
To disable the sysfs interface, pass the option "--disable-sysfs" to ./configure.
To enable the (deprecated) /proc interface support, pass the option "--enable-proc" to ./configure.
Enhancements:
- This release includes a couple of build and Makefile fixes and also a patch which causes cpufrequtils to always set the maximum frequency before the minimum frequency on a policy change, as the kernel expects.

EmiFreq applet is an daemon that shows/control the CPU frequency and temperature thanks to the cpufreq sysfs kernel interface.

The emifreqd daemon enables the applet to change the cpu speed. The GUI is very clean, intuitive fast access to frequency change (with HIG help). Modelled over the Wireless applet.

Nicely support vertical panels (change the look depending on the orientation).

osdcpufreq displays an OSD-like window (similar effect as a televisions on-screen volume control) with information about the CPU current status, including frequency, driver, governor, etc.
It is very useful for laptops equipped with mobile technology processors (like the Intel Centrino), which can change the speed on the fly.
Main features:
- Highly customizable interface. You can easily change the colour, the bar length, the font, the font size, the position, the shadow, etc. of the OSD window.
- Highly customizable behaviour. You can set the number of seconds the OSD window is on the screen, or if you want it to stay always on top.
- Desktop environment independent. It works with any desktop environment or window manager, like KDE, GNOME, XFCE, WindowMaker, IceWm, etc.
- Easily configurable. Every setting can be easily changed editing the well commented $HOME/.osdcpufreq.conf file.
Installation:
make
make install

Frocor stands for F Resonating Objects Correlator and is a sound- graphics installation.
Changes of properties of a Frocor object will result in changes of both the graphics and the sound output.
Main features:
It is based on some parallels between sounds and geometric objects:
Geometry
- Shape (Circle / Triangle / ...)
- Size
- Color
- Animation (Spinning)
Acoustics
- Sound Shape (Sine / Triangular / ...)
- Volume
- Frequency
- Sweep
Enhancements:
- 10/05/2005: first public frocor release: 0.1!

RadeonOverclock allows the setting of core and memory frequency on Radeon graphics cards (currently only under Linux).
RadeonOverclock should work on chips version R100 and up. It has been tested with the Radeon 7500, 9500, and 9700 Pro.
It tries to detect the reference clock (xtal) from the video BIOS, if this doesnt work you can specify it manually. Try 1432 or 2950 if the default value of 2700 does not show the correct frequency when using -i:
rovclock -x 1432 -i
Cards reported to work:
Radeon 7500
Radeon 8500
Radeon 9000
Radeon 9100
Radeon 9500 (Pro)
Radeon 9550
Radeon 9600
Mobility FireGL T2
Mobility Radeon 9600 M10
Radeon 9700 (Pro)
Radeon X800XL
Use the memory timing options with care and login via ssh to make changes. So you can revert them back if your screen corrupts:
rovclock -t tRcdRD:7
Enhancements:
- A check for PCI display devices has been added.
- The list of supported cards has been updated, and the version number has been fixed.

rawrec is a tool designed to provide the user with a simple way of recording or playing raw audio data from or to their sound card under intel Linux.
Main features:
- ability to record to or play from standard io. With this program and other handy things like the sox format converter, Ogg Vorbis lossy codec, and FLAC lossless codec, you can record or play just about any sound format you will ever come accross, with the notable exception of mp3s.
- options to pause execution, pad with silence, or jump into data files, as well as the ones you would expect which control sampling rate, sample resolution, and number of channels.
- an option to enable (amoung other things) exact reporting of what your sound card is doing. In case you are involved in speech processing research and need to know what frequency your card actually uses when you request a given frequency, for example.
- fully buffered and threaded. rawrec/rawplay use memory locking and POSIX pthread functions to provide the most consistent possible performance under load.
- ability to set the buffer fragment size, if you need extremely low latency operation.
Enhancements:
- In play.c, record.c, move_au.c, and move_fd.c, a bug that caused root permissions to be dropped before all threads were created has been fixed. In main.c, command line help output and a problem when the program is invoked via the full path name have been fixed.