From owner-freebsd-current@FreeBSD.ORG  Sun Feb 29 14:39:37 2004
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Date: Sun, 29 Feb 2004 12:39:04 -1000 (HST)
From: Vincent Poy <vince@oahu.WURLDLINK.NET>
To: Andre Guibert de Bruet <andy@siliconlandmark.com>
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cc: current@freebsd.org
Subject: Re: buildworld times
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On Sun, 29 Feb 2004, Andre Guibert de Bruet wrote:

> On Sun, 29 Feb 2004, Vincent Poy wrote:
>
> > On Sun, 29 Feb 2004, Andre Guibert de Bruet wrote:
> > > If you're hitting 80+ degrees, your CPU is going to throttle to keep the
> > > temperature down. This is likely to be the cause (or at least a good
> > > contributor) of the large buildworld times you're seeing. You might want
> > > to look into improved cooling, possibly water-cooling. :-)
> >
> > 	This is actually a notebook and not a desktop machine so the temps
> > are higher than the desktop counterparts as my desktop P4C3.2 at 3.8Ghz
> > runs at 50C full load.  The P4M-2.6Ghz mobile processor runs at 63C even
> > when idle.  It might be the Thermal Interface Material just needs
> > replacing or something.  Is there a way to monitor the temperatures of the
> > CPU since I do notice the load time averages moves up the the 6.xx when
> > using -j4.
>
> There used to be a sysctl that displayed cpu temperature in tenths of a
> degree Kelvin. For some unknown reason, I can't seem to find it in a
> kernel from February 10th. Try doing some exploring in sysctl -a.

	Is this the one you're talking about?

root@bigbang [2:38pm][/home/vince] >> sysctl -a hw.acpi.thermal
hw.acpi.thermal.min_runtime: 0
hw.acpi.thermal.polling_rate: 10
hw.acpi.thermal.tz0.temperature: 3407
hw.acpi.thermal.tz0.active: -1
hw.acpi.thermal.tz0.thermal_flags: 0
hw.acpi.thermal.tz0._PSV: -1
hw.acpi.thermal.tz0._HOT: -1
hw.acpi.thermal.tz0._CRT: 3672
hw.acpi.thermal.tz0._ACx: -1 -1 -1 -1 -1 -1 -1 -1 -1 -1

	I thought there was a utility that displayed it in Celsius or
something.


Cheers,
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