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Date: Tue, 18 Nov 2003 13:42:33 -0800 (PST)
From: Nate Lawson <nate@root.org>
To: Lukas Ertl <l.ertl@univie.ac.at>
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cc: truckman@freebsd.org
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Subject: Re: Updated acpi_cpu patch
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On Tue, 18 Nov 2003, Lukas Ertl wrote:
> On Tue, 18 Nov 2003, Nate Lawson wrote:
> > Try settings of cx_lowest of 1 and 2 (and 3 when the last C3 state is
> > available).  I'm interested in any benchmark results, especially IO.  I'm
> > hoping the scheduling of sleeps is good enough that you don't experience
> > much performance loss even with lower sleeps.
>
> I'm gonna try some "buildkernelstones" with the different settings.  If
> you have some special benchmarks in mind I'd be happy to run them.

That's probably ok.  It has a lot of IO.

> > This excerpt from truckman@'s asl shows that 4 Cx states are only
> > available when the AC adapter is not attached.  (The C*NA memory addresses
> > appear to be managed by the BIOS and not the AML but the PSR access is
> > clear).
>
> This part of the ASL looks the one here - let me guess, is it a ThinkPad?
> :-)

Yes, R40.  I'm scared because I'm beginning to recognize chipsets by their
ASL organization.

-Nate