Re: ?full cpuspeed?

From: Sebastian Yepes [ESN] (esn_at_x123.info)
Date: 05/31/03

  • Next message: Lars Eggert: "Re: Libthr stable enough for testing" 
    To: Bruce Cran <bruce@cran.org.uk>
Date: Sat, 31 May 2003 02:14:21 +0200

    So how have you solved this problem..

    On Friday 30 May 2003 5:32 pm, Bruce Cran wrote:
    > 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" 

    -- 
/*
FingerPrint:
 5BF1 58B1 DE75 CBE3 6044
 7098 1246 1EF6 9E78 041C
 @@@@@@@   @@@@@@ @@@@@@@ 
 @@!  @@@ !@@     @@!  @@@
 @!@!@!@   !@@!!  @!@  !@!
 !!:  !!!     !:! !!:  !!!
 :: : ::  ::.: :  :: :  : 
 The Power To Kill LinuX
*/
_______________________________________________
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: Lars Eggert: "Re: Libthr stable enough for testing"

    Relevant Pages

    • What I learned from Hurricane Charley
      ... Since we never lost power, I'm not sure about the level of our food and ... Since emergency shelter in the county in which I work (and to which I must ... In the late spring we had pulled out our battery operated drill and used it ... we could safely handle the panels without injury to our hands. ...
      (misc.survivalism)
    • 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: Redox batteries
      ... When you say that charging will use a fraction of the power of the generator because most of it is used by the propulsion, you are right when you consider riding at nominal speed. ... In this case, what I need is having the generator run for one hour at full power, then quietly ride using the batteries only for ten hours. ... You do not need to modify the charger itself - it bases lowering the current on voltage only, and "relaxing" will make sure that battery voltage will not go high enough to start throttling down the current. ... it does not matter how to charge it as long as you do not cause ...
      (sci.chem.electrochem.battery)
    • Re: Redox batteries
      ... the role of the battery is to buffer this pulsed power source to deliver just as much power as needed when needed. ... Lead Acid battery is one of the least sensitive to charging rates (probably only cylindrical NiCd beats it in this respect, ... In fact I can turn the table here - vanadium flow battery is bound to have low power capability/capacity ratio, because its electrode surface is much smaller than any conventional battery. ...
      (sci.chem.electrochem.battery)
    • Re: Compact flash card: bulk buy forower price?
      ... As for traveling too a foreign country with a car battery, ... Leave at base camp silly. ... On Peru's Inca trail, you're looking at 3-5 days away from power, ...
      (rec.photo.digital.slr-systems)