Garrett Cooper wrote:
M. Warner Losh wrote:
In message: <[EMAIL PROTECTED]>
Nate Lawson <[EMAIL PROTECTED]> writes:
: Hajimu UMEMOTO wrote:
: >>>>>> On Mon, 30 Jul 2007 23:31:33 +0200
: >>>>>> Pietro Cerutti <[EMAIL PROTECTED]> 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.min_runtime: 0
hw.acpi.thermal.polling_rate: 10
hw.acpi.thermal.user_override: 0
hw.acpi.thermal.tz0.temperature: 0.0C
hw.acpi.thermal.tz0.active: -1
hw.acpi.thermal.tz0.passive_cooling: 1
hw.acpi.thermal.tz0.thermal_flags: 0
hw.acpi.thermal.tz0._PSV: 90.0C
hw.acpi.thermal.tz0._HOT: -1
hw.acpi.thermal.tz0._CRT: 94.0C
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
the cooling?
Warner
Wow, something's really wrong with those calculated temperatures. At
that value most of the plastic and weaker circuitry should have fused
together =\.
It would be interesting to see what the values are just after booting,
or even earlier if you can get the bios to give temperatures
(some MBs have that possibility)
-Garrett
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