Date: Mon, 24 Apr 2006 10:27:26 +0000 From: Harrison Grundy <astrodog@gmail.com> To: Lars Fredriksen <lars@odin-corporation.com>, current@freebsd.org Subject: Re: kern.hz=1000 causes random poweroff on laptop Message-ID: <1145874446.6285.27.camel@localhost> In-Reply-To: <444BBB5E.2040404@odin-corporation.com> References: <44490107.6010609@odin-corporation.com> <86r73po5fp.fsf@xps.des.no> <444A7544.3070701@errno.com> <444BBB5E.2040404@odin-corporation.com>
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--=-sPZXzpm9j4wngWdNuzbK Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable On Sun, 2006-04-23 at 12:37 -0500, Lars Fredriksen wrote: > Hi, > I don't think this is overheating either because it will generally lock=20 > up within a minute or so, but perhaps it is possible that some part gets=20 > to hot in that time frame. If so it is not something acpi is monitoring=20 > because it reports temperatures substantially lower than the PSV limit.=20 > Below is what acpi reports at 100 hz and idle: >=20 > hw.acpi.thermal.tz0.temperature: 46.9C > hw.acpi.thermal.tz0.active: -1 > hw.acpi.thermal.tz0.passive_cooling: 1 > hw.acpi.thermal.tz0.thermal_flags: 0 > hw.acpi.thermal.tz0._PSV: 79.9C > hw.acpi.thermal.tz0._HOT: -1 > hw.acpi.thermal.tz0._CRT: 94.9C > I can leave the machine at the boot prompt without any problems for a=20 > long time (I know that does not put much stress on the machine :-)), but=20 > within 30-60 seconds of getting to a single user shell prompt, it is=20 > dead as a duck at hz=3D1000. >=20 That's.... interesting behavior. This sounds interrupt related, to me. What happens if you boot it up, then don't touch anything? > Is is possible that it is a power converter issue, where the higher=20 > frequency requires enough current to make the converter start going=20 > belly up? >=20 Doubtful. If the power screwed up, you probably couldn't get a dump. > Also with older kernels, it seems they sometime fails in a similar=20 > fashion (hz=3D100), when I have a cardbus card (not a pcmcia) active. In=20 > these scenarios though, the machine has typically been running for hours=20 > or days, so it might have been something completely different. >=20 > I have for a long time suspected that the deep irq chain for irq9, might=20 > have had something to do with these types of problems. On this machine=20 > you have : > <cbb_intr> > <fxp_intr> > <uhci_intr> > <nm_intr> > <InterruptWrapper> > <intpm_intr> >=20 > This list is is from a trace I did a couple of years ago, so the names=20 > might be different, but the depth of the chain hasn't changed. >=20 > Lars >=20 > Sam Leffler wrote: > > Dag-Erling Sm=F8rgrav wrote: > >> Lars Fredriksen <lars@odin-corporation.com> writes: > >>> I have a laptop sony z505rx, that if booted with kern.hz as 1000,=20 > >>> will power off within a minute or two of booting. > >> > >> sounds like overheating. > > > > I've noticed on several of my laptops that they run way hotter with=20 > > freebsd than other systems (linux, windows). Most are newer models=20 > > that have either acpi issues or lack speedstep support. But I suspect=20 > > there's something else going on in the basic system. I find it hard=20 > > to believe the clock rate is the cause of this extra work but haven't=20 > > dug into it (I hoped judicious use of hwpmc would pinpoint what's=20 > > going on). > > > > Sam > > > > !DSPAM:444a7550956491607598332! > > > > > _______________________________________________ > freebsd-current@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org= " --=-sPZXzpm9j4wngWdNuzbK Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.3 (FreeBSD) iD8DBQBETKgOKw4E3+WdWBYRAqiIAJ9yWlMk2LvfRCDF+s9mhGEtT8nnEACeOgDd Txzq4FB3LtTuCly0d9S+PIA= =B/K6 -----END PGP SIGNATURE----- --=-sPZXzpm9j4wngWdNuzbK--
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