cpufreqd: ondemand

From: Hanspeter Roth (hampi_at_rootshell.be)
Date: 09/29/05

  • Next message: Žáček Kryštof: "RE: Re: [OT] Drawing a rectangle with Gimp" 
    Date: Thu, 29 Sep 2005 13:20:22 +0200
To: debian-user@lists.debian.org

    Hello,

    I have an /etc/cpufreqd.conf that makes
    /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq go to 600000
    on Mandriva if the system is idle.
    However the same configuration on Debian makes it go to 1500000 that
    is full speed if the system is idle.
    Kernel is 2.6.8-2-686.
    Why does the same cpufreqd configuration behave differently on
    Debian than on Mandriva?
    What is required on Debian to make it go to the minimum frequency if
    the system is idle?

    The config file looks like:

    ....
    # this is a comment
    #
    # you need: 1 [General] section,
    # 1 or more [Profile] sections
    # 1 or more [Rule] sections
    #
    # a section ends at the first blank line
    #
    # [Rule] sample:
    # [Rule]
    # name=sample_rule
    # ac=on # (on/off)
    # battery_interval=0-10
    # cpu_interval=30-60
    # programs=xine,mplayer
    # profile=sample_profile
    #
    # [Profile] sample:
    # [Profile]
    # name=sample_profile
    # minfreq=10%
    # maxfreq=100%
    # policy=performance
    #
    # see CPUFREQD.CONF(5) manpage for a complete reference

    [General]
    pidfile=/var/run/cpufreqd.pid
    poll_interval=2
    pm_type=acpi #(acpi, apm or pmu)
    # Uncomment the following line to enable ACPI workaround (see cpufreqd.conf(5))
    # acpi_workaround=1
    verbosity=4 #(if you want a minimal logging set to 5)

    [Profile]
    name=old_hi_boost
    minfreq=66%
    maxfreq=100%
    policy=performance

    [Profile]
    name=hi_boost
    minfreq=0%
    maxfreq=100%
    policy=ondemand

    [Profile]
    name=medium_boost
    minfreq=33%
    maxfreq=66%
    policy=performance

    [Profile]
    name=lo_boost
    minfreq=0%
    maxfreq=33%
    policy=performance

    [Profile]
    name=lo_power
    minfreq=0%
    maxfreq=33%
    policy=powersave

    # conservative mode when not AC
    [Rule]
    name=conservative
    ac=off # (on/off)
    battery_interval=0-100
    cpu_interval=0-40
    cpu_nice_scale=1.5
    delay_cycles=3
    profile=lo_boost

    # need some power
    [Rule]
    name=lo_cpu_boost
    ac=off # (on/off)
    battery_interval=0-100
    cpu_interval=30-80
    profile=medium_boost

    # need big power (not if battery very low)
    [Rule]
    name=hi_cpu_boost
    ac=off # (on/off)
    battery_interval=50-100
    cpu_interval=70-100
    profile=medium_boost

    # full power when AC
    [Rule]
    name=AC_on
    ac=on # (on/off)
    profile=hi_boost

    # full power when watching DVDs and not AC:
    # this is the last rule and takes less
    # precedence with respect to the others
    [Rule]
    name=dvd_watching
    ac=off # (on/off)
    battery_interval=0-100
    programs=xine,mplayer,avidemux
    cpu_interval=0-100
    profile=hi_boost
    ....

    -Hanspeter 

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