Subject: Re: kern/36995: ENHANCED_SPEEDSTEP dangerous on newer Core 2 Duo
To: None <kern-bug-people@netbsd.org, gnats-admin@netbsd.org,>
From: Jared D. McNeill <jmcneill@invisible.ca>
List: netbsd-bugs
Date: 09/17/2007 10:25:02
The following reply was made to PR kern/36995; it has been noted by GNATS.
From: "Jared D. McNeill" <jmcneill@invisible.ca>
To: gnats-bugs@NetBSD.org
Cc: kern-bug-people@netbsd.org, gnats-admin@netbsd.org,
netbsd-bugs@netbsd.org
Subject: Re: kern/36995: ENHANCED_SPEEDSTEP dangerous on newer Core 2 Duo
CPUs
Date: Mon, 17 Sep 2007 06:21:03 -0400 (EDT)
On Mon, 17 Sep 2007, Quentin Garnier wrote:
> > machdep.est.frequency.target =3D 2000
> > machdep.est.frequency.current =3D 2000
> > machdep.est.frequency.available =3D 2000 1800 1600 1400 1200
>
> Do we really overclock the CPU? I thought this was that feature that
> allows one core to be boosted if the other one is idle... Can't
> remember the name...
The sysctl output above is from a fresh boot, no estd -- and the T7100 in
this laptop is a 1.8GHz Core 2 Duo.
Cheers,
Jared