Date: Wed, 13 Nov 2013 10:33:23 -0800 From: Sean Bruno <sean_bruno@yahoo.com> To: Jung-uk Kim <jkim@FreeBSD.org> Cc: freebsd-acpi <freebsd-acpi@freebsd.org> Subject: Re: Problems with amd FX 8 core and freq scaling Message-ID: <1384367603.98053.0.camel@powernoodle.corp.yahoo.com> In-Reply-To: <52815060.9050406@FreeBSD.org> References: <5281358D.1010406@FreeBSD.org> <5281374F.7080802@FreeBSD.org> <CAJ-VmomgCyjX_tR7bLzw6s8jSJJvfB=5fXFCj6UgdKFz6rW-FQ@mail.gmail.com> <52814CB2.6050204@FreeBSD.org> <52815060.9050406@FreeBSD.org>
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--=-z8O+z5GG8LCmkLGO1Kwu Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable On Mon, 2013-11-11 at 16:47 -0500, Jung-uk Kim wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 >=20 > On 2013-11-11 16:31:30 -0500, Jung-uk Kim wrote: > > On 2013-11-11 15:26:58 -0500, Adrian Chadd wrote: > >> On 11 November 2013 12:00, Jung-uk Kim <jkim@freebsd.org> wrote: > >>> -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 > >>>=20 > >>> On 2013-11-11 13:16:47 -0500, Nicholas McKenzie wrote: > >>>> But wouldn't this just disable frequency scaling and the > >>>> whole point of powerd? > >>>=20 > >>> No. acpi_throttle (and p4tcc) controls T-state. "Frequency=20 > >>> scaling" should be done by changing P-state. > >=20 > >> Right. > >=20 > >> IIRC, T-state is just for emergency temperature throttling. It=20 > >> shouldn't be used outside of that. > >=20 > >=20 > >>>>> There have been a number of reports of throttling causing=20 > >>>>> crashes. This setting does not prevent powerd from > >>>>> adjusting your CPU's clock, it just disables some arcane > >>>>> feature which pre-dates the modern power management > >>>>> methods. > >=20 > >> .. did anyone ever figure out why crashes would be caused by=20 > >> T-state adjustment? > >=20 > > My memory is vague but I think it was not able to reject a broken > > FADT or _PTC table, or something like that. >=20 > Just in case, here I attached the uncommitted (and untested) patch. >=20 > Jung-uk Kim > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v2.0.22 (FreeBSD) >=20 > iQEcBAEBAgAGBQJSgVBgAAoJEHyflib82/FGACsIAJGDQGOYYO8dxvtQMw4BBnzl > BNbFkvalvHOzaSezJz+A4R0zeIMvkfJtu0Gb8qiTkxJF+REREFo6a7lmzC7hOMwa > 7PzRRRG34rtmnnHJro3Wc5qQwc1zBbmyFgYEJ45AkmIc62mpp9f0sZyNA1+aSpau > 2sY6H0dXktapc2pLR1uNyxfUlr1tRhoabceGSlGLYiB583FrMsvASkaTnuWQ2IfI > gytrJBKjMihu60KlwKauzUOVDrEuN3J/B1y7V/TrTXmcFmWgL9Wdw/gC7ToRdloT > JdF812Duj/xYvyoNEwkz1Rm0NT5r1ZTYqwMvkOPuMfK7IWX0O9UFO8VG+QnJXhU=3D > =3D/d/E > -----END PGP SIGNATURE----- > _______________________________________________ > freebsd-acpi@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-acpi > To unsubscribe, send any mail to "freebsd-acpi-unsubscribe@freebsd.org" Up and running this patch now on my FX-8150. Anything interesting that I should gather report? sean --=-z8O+z5GG8LCmkLGO1Kwu Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.15 (FreeBSD) iQEcBAABAgAGBQJSg8XsAAoJEBkJRdwI6BaHYV0H/R0NCo8t6MFFWSi8dTWFoTnN cDN6BEmE3BFhBc3nDPUuhitm1xwivPU68x+g+UBnSbcdDCmBk2K2zwpfTZREk2gI elc7boh3Z4WA0qA0M6M+9OnICe35jEDX+rtmSmfJM0xFLRu2b76ZV8WfYq20EMHn n0Nd7ssLgoPIcuPCiqsy8FZwo0ioB4MIqBu8bL8R3VdRotJDTWpqEektxmFz9ndI cYoMLjmSOVEfXK20Rn4mTwNXZ0jHOi9zWAHnG/IAWU2ZnBpCQ/YW/iRrJ6TNhkaC bIcLZ6Xwy+Blvp7CMwHfuvXA5TUncNM6YgzpsNK8VBW4Jsb/NkNzBYP/AU6ecCg= =sdhd -----END PGP SIGNATURE----- --=-z8O+z5GG8LCmkLGO1Kwu--
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