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Date:      Sun, 29 Feb 2004 17:31:33 -0500 (EST)
From:      Andre Guibert de Bruet <andy@siliconlandmark.com>
To:        Vincent Poy <vince@oahu.WURLDLINK.NET>
Cc:        current@freebsd.org
Subject:   Re: buildworld times
Message-ID:  <20040229172746.V52152@alpha.siliconlandmark.com>
In-Reply-To: <20040229122142.K8264-100000@oahu.WURLDLINK.NET>
References:  <20040229122142.K8264-100000@oahu.WURLDLINK.NET>

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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.

Regards,
Andy

> Andre Guibert de Bruet | Enterprise Software Consultant >
> Silicon Landmark, LLC. | http://siliconlandmark.com/    >



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