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Date: Sun, 29 Jan 2006 01:30:07 -0500
From: Kris Kennaway <kris@obsecurity.org>
To: Nate Lawson <nate@root.org>
Message-ID: <20060129063007.GA47800@xor.obsecurity.org>
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Cc: cvs-src@FreeBSD.org, Nate Lawson <njl@FreeBSD.org>,
	src-committers@FreeBSD.org, cvs-all@FreeBSD.org,
	Kris Kennaway <kris@obsecurity.org>
Subject: Re: cvs commit: src/etc/defaults rc.conf
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On Sat, Jan 28, 2006 at 10:17:47PM -0800, Nate Lawson wrote:
> Kris Kennaway wrote:
> >On Sun, Jan 29, 2006 at 01:06:54AM -0500, Kris Kennaway wrote:
> >
> >>On Sun, Jan 29, 2006 at 05:51:58AM +0000, Nate Lawson wrote:
> >>
> >>>njl         2006-01-29 05:51:58 UTC
> >>>
> >>> FreeBSD src repository
> >>>
> >>> Modified files:
> >>>   etc/defaults         rc.conf=20
> >>> Log:
> >>> Enable the lowest Cx state by default.  This will save power and we h=
ave
> >>> had enough testing of acpi_cpu to know this is stable now.
> >>
> >>On my desktop system (running RELENG_6 though), setting
> >>hw.acpi.cpu.cx_lowest=3DC0 causes atrocious performance.  Is it broken
> >>in 6.x?
> >
> >C2, sorry.
>=20
> Ah, C0 should be disallowed already I thought (try it).
>=20
> As for C2, I MFCd a patch to acpi_cpu.c in November that should prevent=
=20
> this (1.57.2.1).  Do you get a printf on console?

This might be it: turns out I never rebooted to the newer kernel I
built earlier this month, and I am still running a kernel from Nov 6.
I'll get back to you.

Kris

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