[patch] enhance powerd(8) to handle max temperature
M. Warner Losh
imp at bsdimp.com
Thu Aug 2 03:20:41 UTC 2007
In message: <46AE8F78.1060203 at root.org>
Nate Lawson <nate at root.org> writes:
: Hajimu UMEMOTO wrote:
: >>>>>> On Mon, 30 Jul 2007 23:31:33 +0200
: >>>>>> Pietro Cerutti <gahr at gahr.ch> said:
: > gahr> My patch is really just a first draft that I wrote in order to have
: > gahr> feedbacks on the general idea to implement a temperature controlling
: > gahr> system inside powerd, and doesn't implement hysteresis as you noted, and
: > gahr> your feedback is that it's not a good idea, which I respect.
: > It is rather backward, IMHO. I did implement a passive cooling
: > feature as an enhancement of powerd(8) like you did, during initial
: > phases. Then, I implemented it in our kernel as a result.
: I'll take a look at your patch. Umemoto-san is right in that you really
: want the kernel to control cooling. What happens if powerd dies/hangs
: and your system burns up? Passive cooling is often a last resort to
: keep the system from overheating.
I keep getting the system shutting down on my HP by FreeBSD because
the temperature exceeds the _CRT value. Maybe there's something wrong
with my values, since it happens a lot:
hw.acpi.thermal.tz0._ACx: 40.0C -1 -1 -1 -1 -1 -1 -1 -1 -1
Note: temperature is always 0.0C.
What can I do to help my situation, if I really want the kernel doing
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