Re: ?full cpuspeed?

From: Bruce Cran (bruce_at_cran.org.uk)
Date: 05/30/03

  • Next message: Simon L. Nielsen: "Re: cvs commit: src/share/man/man4 axe.4 mac_portacl.4 my.4rndtest.4 rue.4 sbsh.4 src/share/man/man4/man4.i386 pae.4 sbni.4 vpd.4" 
    Date: Fri, 30 May 2003 16:32:36 +0100
To: "Sebastian Yepes [ESN]" <esn@x123.info>

    On Fri, May 30, 2003 at 01:52:16PM +0000, Sebastian Yepes [ESN] wrote:
    > Hi all i have a Dell inspiron 8500 Notebook that have SpeedStep
    > when i am on AC power i just love my notebook, but when i gen on Battery
    > i can't even see a dvd & and my X run verry slow..
    >
    > is there and way to force fbsd to use 'hw.acpi.cpu.current_speed=8' when i am
    > on battery.. by the way 'hw.acpi.cpu.current_speed' is read only..
    >
    > -- sysctl --
    >
    > --AC Power--
    > hw.acpi.cpu.max_speed: 8
    > hw.acpi.cpu.current_speed: 8
    > hw.acpi.cpu.performance_speed: 8
    > hw.acpi.cpu.economy_speed: 4
    >
    > --Battery Power--
    > hw.acpi.cpu.max_speed: 8
    > hw.acpi.cpu.current_speed: 4
    > hw.acpi.cpu.performance_speed: 8
    > hw.acpi.cpu.economy_speed: 4
    >

    There are two possible problems here. If you power on on AC and switch over
    to battery, you can set the hw.acpi.cpu.economy_speed to 8 to get the full
    CPU speed. If you power on using battery though, Dell have made it so you'll
    only ever be able to use 60% CPU speed, regardless if you later switch to AC.
    For example, my 2.0GHz i8500 boots up as 1.2GHz and is detected as such by
    FreeBSD. The economy_speed sysctl will then throttle it further to 600MHz. 

    --
Bruce Cran
_______________________________________________
freebsd-current@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-current
To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org"
  • Next message: Simon L. Nielsen: "Re: cvs commit: src/share/man/man4 axe.4 mac_portacl.4 my.4rndtest.4 rue.4 sbsh.4 src/share/man/man4/man4.i386 pae.4 sbni.4 vpd.4"

    Relevant Pages

    • Re: Notebook wont power on
      ... There is no commonality between episodes (it never hibernated or went into standby before being shutdown, the battery never died, it is plugged in when it is shutdown, it is not plugged in when it shuts down, etc). ... problem when on battery is that the notebook is totally dead. ... The problem when the notebook is on AC is that the various buttons light up (all but the power button) and the notebook won't boot. ... put the battery back in and you are good for about another 5 boots. ...
      (microsoft.public.windowsxp.general)
    • Re: Power keep recycling on Dell notebook.
      ... my old trusty notebook went dead. ... and hours later the notebook unable to boot-up with A/C power. ... I remove the battery and AC plug. ... I had opened up the notebook, check the usual fault-prone DC-DC charger ...
      (comp.sys.laptops)
    • Re: Urgent! College Students Dead i6000 Battery?
      ... Her machine is a Dell Inspiron 6000, about 18 months old, running ... battery --- looks to be exactly the same) that she could try. ... thing it does when its battery power is almost all gone. ... I hope the tech makes sure that it needs a motherboard before replacing ...
      (alt.sys.pc-clone.dell)
    • Re: Detecting Battery Mode programatically
      ... Actually, IIRC, Service Pack 2 already has code to prevent installing if the ... system is running on battery power... ... > large processing power when activated. ... > power cable to my notebook, but it should return "charging" or "using ...
      (microsoft.public.scripting.vbscript)
    • Sony PCG-R600HFPD problem - please help
      ... clean it all out the notebook is now not working. ... power switch on the battery light and the power light come on but the ... go off only when I remove the battery. ... VAIO support centre. ...
      (comp.sys.laptops)