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Date:      Mon, 07 Nov 2005 13:46:31 +0100
From:      des@des.no (=?iso-8859-1?q?Dag-Erling_Sm=F8rgrav?=)
To:        Nate Lawson <nate@root.org>
Cc:        cvs-src@FreeBSD.org, Mike Silbersack <silby@silby.com>, src-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject:   Re: cvs commit: src/sys/conf files src/sys/modules/acpi/acpi Makefile src/sys/dev/acpica acpi_battery.c acpi_smbat.c acpi_smbus.h  acpiio.h
Message-ID:  <868xw0d3rs.fsf@xps.des.no>
In-Reply-To: <436E5797.7090605@root.org> (Nate Lawson's message of "Sun, 06 Nov 2005 11:20:55 -0800")
References:  <200511052355.jA5NtuPg026403@repoman.freebsd.org> <20051105191616.M870@odysseus.silby.com> <861x1u55qg.fsf@xps.des.no> <436E5797.7090605@root.org>

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Nate Lawson <nate@root.org> writes:
> Dag-Erling Sm=F8rgrav wrote:
> > Try running powerd with a 5000 ms polling interval.  With the default
> > of 500 ms, it never seems to stabilize, but keeps oscillating wildly
> > in the 75-300 MHz range on my Dell Latitude D600.
> That is bad for performance.  It can then take up to 10-15 seconds to
> promote back to 100% CPU when your system becomes busy.

It's not as bad for performance as me tossing the laptop out the
window in frustration because powerd keeps changing the CPU frequency
and the system freezes for just a moment every time it does.

DES
--=20
Dag-Erling Sm=F8rgrav - des@des.no




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