Subject: Re: Driver for Enhanced SpeedStep
To: Frank van der Linden <fvdl@netbsd.org>
From: Michael Eriksson <Michael.Eriksson@era-t.ericsson.se>
List: port-i386
Date: 11/05/2003 17:17:10
Frank van der Linden wrote:
> On Sun, Nov 02, 2003 at 11:25:37PM +0100, Michael Eriksson wrote:
> > I have written a driver for Intel's new CPU frequency control
> > mechanism, Enhanced SpeedStep (EST), which is used in Pentium M
> > processors.
> 
> Cool, thanks for doing this. I'm not sure that sysctl is the right
> interface to this; it probably needs to be combined into some
> kind of power profile, but it's certainly a good start.

No, sysctl isn't perfect, but it was an easy choice:
- An existing and easy-to-use user-space client.
- Prior art (Transmeta Crusoe LongRun can also be controlled by sysctl).
- I don't know enough about the other speed control mechanisms to make
  a good abstraction.

/Micke