RE: Power profile script

From: John Baldwin (jhb_at_FreeBSD.org)
Date: 12/15/03

  • Next message: Nate Lawson: "Re: Power profile script"
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    Date: Mon, 15 Dec 2003 16:26:46 -0500 (EST)
To: Nate Lawson <nate@root.org>

    On 13-Dec-2003 Nate Lawson wrote:
    > I've implemented a script for changing power profiles in userland when you
    > go on or off AC power. The defaults will just change the CPU idle states
    > to the lowest power ones when off AC power. Throttling will stay at 100%.
    > Of course, the user can override these in rc.conf. In the future, other
    > power profile features will be maintained by the same script. You have to
    > be running devd to use this.
    >
    > The special values LOW and HIGH refer to the lowest and highest performing
    > settings for a given sysctl. So if a system has 8 throttling values, from
    > 1 to 8, HIGH would be 8 and LOW would be 1. You can also specify a
    > particular value ("2") if you know what you want.
    >
    > I'm mostly looking for style input on the /etc/power_profile script since
    > I'm not familiar with our scripting guidelines. Note that it's called
    > from devd (or manually by the user) and is not an rc.d boot-time thing.

    This looks really cool! I do think Mike's suggestions on moving this to
    /etc/rc.d/ and using functions from /etc/rc.subr might be a good thing
    to do. 

    -- 
John Baldwin <jhb@FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve!"  -  http://www.FreeBSD.org/
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