Re: Script to adjust cpu frequency according to cpu temprature

[Paul Goyette <paul%whooppee.com@localhost>]

And, if you've got fans that are controlled by dbcool(4) devices, you 
can use envstat/powerd as Jeremy suggests, and update the various 
sysctl(8) values for the fan pulse-width modulators (PWM) exposed by 
dbcool(4).  :)

One of these days I'm gonna sit down and come up with a better interface 
for this...  Maybe if we allocate a device major, some standard ioctl(x) 
calls can be designed.  dbcool(4) is only one example of a fan 
controller (someone recently posted a simplistic acpi-fan driver)...


On Thu, 7 May 2009, Jeremy C. Reed wrote:

> An alternative is to use envstat to configure triggers for this and then
> configure powerd to handle them. That is what I use on two systems. (Need
> newer than NetBSD 4.)
>
> I wrote about it some here
> http://reedmedia.net/~reed/journal/2009/20090110.html
>
> (I have many more details in my NetBSD docs. Email me off-list if want
> more details.)

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