Re: [Watchdog-devel] Linux watchdog: max-temperature

>> My devices are headless, so a poweroff/halt when the temperature is
>> too
>> high is not very helpful. I was wondering whether watchdog could kill
>> all processes, then wait for a configurable time to allow the machine
>> to
>> cool down, and then reboot. E.g.
>>
>> ?? temperature-reboot-wait = 600
> 
> Actually this doesn't sound silly at all. It would be a good feature to
> have I would say. However, I have no spare cycles at the moment to
> implement it. So if you are willing to put time into it, I'd appreciate
> a pull request or a patch.

On one hand it seems reasonable, but equally it also suggest the machine 
is not properly cooled in the first place if a CPU load can overheat it!

Previously it was (or at least I understood) the scenario that 
overheating would be the result of a hardware fault: for example the CPU 
fan failing, or the room air conditioning failing. In that case it 
really is a shutdown step to prevent permanent damage as it needs 
physical intervention to fix things.

Have you got more information about the sort of situation (e.g. hardware 
set up) where a simple high process load would overheat the machine?

Regards,
Paul
-- 
  Dr. Paul S. Crawford
  c/o Satellite Station
  University of Dundee
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