Re: Allow userspace do something special on overtemp

Robert Hancock
2004-08-13T04:28:20Z

----- Original Message -----
From: "Pavel Machek" <pavel@suse.cz>
Newsgroups: fa.linux.kernel
To: "Len Brown" <len.brown@intel.com>
Cc: "Dax Kelson" <dax@gurulabs.com>; <trenn@suse.de>; <seife@suse.de>;
"Kernel Mailing List" <linux-kernel@vger.kernel.org>
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.