CPUFREQD(8)															       CPUFREQD(8)

NAME

       cpufreqd - intelligently monitor and manipulate CPU frequency

SYNOPSIS

       cpufreqd [-Dmhv] [-f filename] [-V verbosity]

DESCRIPTION

       cpufreqd  is  used to monitor the status of the system and adjust the frequency of the CPU according to the user configuration.	The behav-
       iour of the daemon is fully configurable. Logs are reported through syslogd.

PARAMETERS

       -D, --no-daemon
	      stay in foreground (used to debug).

       -m, --manual
	      start in manual mode.

       -f filename, --file=filename
	      Specify the configuration file to read.  The default is /etc/cpufreqd.conf.

       -h, --help
	      Display command line help.

       -v, --version
	      Display the version number of the daemon.

       -V, --verbosity
	      verbosity level from 0 (less verbose) to 7 (most verbose). Default verbosity is 4

SIGNALS

       SIGHUP This lets cpufreqd perform a re-initialization.  The configuration file (default is /etc/cpufreqd.conf) will  be re-read and  probes
	      re-done. (Not yet implemented in cpufreqd-2.0)

       SIGINT, SIGTERM
	      cpufreqd will terminate.

EXAMPLES

       /usr/sbin/cpufreqd -D

NOTES

       Some ACPI implementations are very cpu-consuming when reading the info file of
	      system  batteries.  Cpufreqd  implements a simple workaround that avoids reading that file except on initialization or reinitializa-
	      tion. This has the effect of needing to send an HUP signal if inserting a new battery, otherwise battery measurement won't  be  cor-
	      rect.

FILES

       /sys/devices/system/cpu/cpu*/cpufreq
	      kernel cpu frequency interface

       /proc/cpufreq
	      old deprecated kernel cpu frequency interface (please avoid it)

       /proc/acpi
	      kernel power management interface (ACPI)

       /proc/apm
	      kernel power management interface (APM)

       /proc/pmu
	      kernel power management interface (PMU). (Not yet implemented in cpufreqd-2.0)

       /etc/cpufreqd.conf
	      cpufreqd configuration file

SEE ALSO

       cpufreqd.conf(5),syslogd(8),cpufreqd-set(1),cpufreqd-get(1)

BUGS

       Multiple  CPUs are not considered separately thus the same policy is set in every available CPU.  Battery can only be specified in percent,
       not in minutes remaining.

AUTHOR

       George Staikos <staikos@0wned.org>

       Mattia Dongili <malattia@linux.it>

       Rene Rebe <rene@rocklinux.org>

								    05 May 2005 						       CPUFREQD(8)