On Thu, Dec 21, 2006 at 12:47:01PM -0800, Rich Dunkle wrote:
> How can I disable the SpeedStep feature in OpenBSD 4.0 ?
> Is there something in UKC ?

It looks like dimitry has already resolved the issue. To answer your
question however: yes there is an inelegant way to disable
est/speedstep and some of the other frequency/voltage scaling
technologies on i386 and amd64

boot into ddb and write a large value to global setperf_prio e.g.:

boot -d
ddb> w setperf_prio 666
ddb> cont

Code that honours the priority will bail in its init routine.

gwk

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