Date: Sun, 29 Feb 2004 17:47:10 -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: <20040229174242.H52152@alpha.siliconlandmark.com> In-Reply-To: <20040229123826.B8264-100000@oahu.WURLDLINK.NET> References: <20040229123826.B8264-100000@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:
>
> > 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
^^^^ 340.7K or 67.55C
> 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.
When in doubt, convert using Google! :-)
http://www.google.com/search?hl=en&lr=&ie=ISO-8859-1&q=340.7+Kelvin+in+Centigrade&btnG=Google+Search
Regards,
Andy
> Andre Guibert de Bruet | Enterprise Software Consultant >
> Silicon Landmark, LLC. | http://siliconlandmark.com/ >
>
>
> Cheers,
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