CFT: PMU-based speed changes

[Adam Martin]

Justin,

On Feb 21, 2013 8:56 AM, "Justin Hibbits" <jhibbits at freebsd.org> wrote:
>
> After over a year of off-and-on work, lots of frustration, and help from
> quite a few people, I present to you all for testing, PMU speed changes.
>  You can find it in the projects/pmac_pmu branch, which is branched from
> -CURRENT back in December/January.  Anybody with a Titanium Powerbook, and
> some of the early Aluminum books, should now be able to run their machines
> at full speed using powerd, or sysctl dev.cpu.0.freq.  I tested this on my
> 1GHz TiBook (last generation TiBook), using md5 on a core dump, and saw a
> nice performance boost.

Will an 867MHz 12" G4 be useful for testing this?  It's MPC 7455, iirc.

> That branch also has PMU-based sleep code in place, but it does not work
> (don't try to set sysctl dev.pmu.0.sleep, your machine will go catatonic).

Ideas on what makes it go catatonic yet?  Is it just the TiBook, or AlBooks
too?

-- 
ADAM David Alan Martin