Acpi thermal/powerd not keeping up.

[Alexandre "Sunny" Kovalenko]

On Mon, 2006-04-17 at 20:00 +0200, Marcin Koziej wrote:
> Hello,
> 
> I use STABLE with acpi_perf and powernow module on Athlon64 cpu with 
> Cool`n'Quiet. I have two problems I'd like to ask advice for:
> 
> 1. Is there a way to improve time frequency of temp zones' temperature 
> info ? On heavy load I can get over 10 deg. jump with which powerd 
> cannot keep up (I use patched version which tries to use passive cooling 
> (drop cpu freq) when temperature is too high).
> 
> 2. If I start the system after overheating shutdown, the system heats up 
> again, because the passive cooling can only start after the kernel has 
> boot'ed. If the partitions are fsck'ed, it can get even worse.
> 
> Thoughts appreciated,
> 
> m.
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You have not provided too much detail on your thermal zone
configuration, but, assuming you have one defined, you should be able to
set

hw.acpi.thermal.polling_rate

to the desired frequency (in seconds). I honestly do not remember where 
does default (10 seconds on my system) come from.

I have seen (2) on my laptop as well, but this was the result of
hardware problem -- heatsink not aligned well with the CPU. After using
crowbar and some thermal grease on it the problem disappeared.

HTH,
-- 
Alexandre "Sunny" Kovalenko (Олександр Коваленко)