Date: Thu, 21 Feb 2013 09:52:19 -0800 From: Adam Martin <adamartin@freebsd.org> To: Justin Hibbits <jhibbits@freebsd.org> Cc: FreeBSD PowerPC ML <freebsd-ppc@freebsd.org> Subject: Re: CFT: PMU-based speed changes Message-ID: <CAJTQnqagOMer8Pgs5NqjXg5Q6YyYR6ECcx3V=k2GMfwRm03a4A@mail.gmail.com> In-Reply-To: <CAHSQbTAjw5%2BEVw2H5NQTfKLR-66HoEEqEV=Skhgg%2BhBMdTzEEw@mail.gmail.com> References: <CAHSQbTAjw5%2BEVw2H5NQTfKLR-66HoEEqEV=Skhgg%2BhBMdTzEEw@mail.gmail.com>
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Justin, On Feb 21, 2013 8:56 AM, "Justin Hibbits" <jhibbits@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
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