Date: Wed, 10 Dec 2003 10:06:45 -0800 (PST) From: Nate Lawson <nate@root.org> To: Lukas Ertl <l.ertl@univie.ac.at> Cc: current@freebsd.org Subject: Re: ACPI throttling changes Message-ID: <20031210100527.X46577@root.org> In-Reply-To: <20031210184201.Y598@korben.in.tern> References: <20031209175230.I44055@root.org> <20031210184201.Y598@korben.in.tern>
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On Wed, 10 Dec 2003, Lukas Ertl wrote: > On Tue, 9 Dec 2003, Nate Lawson wrote: > > I'm working on a shared CPU frequency control driver. One step is to > > remove some of the autonomy of the throttling portion of acpi_cpu. > > Please test this patch if you have a machine which supports throttling. > > Apropos CPU frequency: is there a way to find out at what frequency the > CPU is running? And shouldn't SpeedStep have an influence on that? (Or > is SpeedStep not supported?) This is getting a bit off-topic. It's too early to discuss how all the different parts of cpufreq work. The answer is "yes and no", depending on which underlying technologies your laptop has available. ACPI throttling: yes, SpeedStep: mostly yes, ACPI performance states: no. -Nate
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