Re: Allow userspace do something special on overtemp

[Robert Hancock]

----- Original Message ----- 
From: "Pavel Machek" <pavel@xxxxxxx>
Newsgroups: fa.linux.kernel
To: "Len Brown" <len.brown@xxxxxxxxx>
Cc: "Dax Kelson" <dax@xxxxxxxxxxxx>; <trenn@xxxxxxx>; <seife@xxxxxxx>;
"Kernel Mailing List" <linux-kernel@xxxxxxxxxxxxxxx>
Sent: Thursday, August 12, 2004 5:25 PM
Subject: Re: Allow userspace do something special on overtemp


> Ouch and btw I've done some torturing on one prototype (AMD). It had
> thermal at 98Celsius (specs for this cpu said 95C max), and I ended my
> test at 105Celsius. I do not know about TM1/TM2 etc, but in this case
> hardware clearly failed to do the right thing.

This is dependent on the CPU/motherboard in use - AMD CPUs (up to the last
ones I heard about, anyway) don't have any built in thermal protection, they
rely on the motherboard to shut down the CPU in the event of
over-temperature. Intel CPUs since the Pentium II all shut down on excessive
over-temperature; Pentium 4s will also clock-throttle to continue operating
before they get to this point.

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