underclocking or CPU frequency scaling

thufir hawat.thufir at gmail.com
Sun Mar 18 00:59:54 UTC 2012

On Sun, 18 Mar 2012 00:17:28 +1000, Jared Norris wrote:

> Obviously the hardware resolution is always preferable. If that fails I
> think what you're looking for is called "CPULIMIT" -
> http://manpages.ubuntu.com/manpages/precise/man1/cpulimit.1.html

That's awesome!  Exactly what I was looking for.  The man page is even 
readable by mere mortals like myself, with easy example syntax:

cpulimit -p 1234 -l 50

So, from top, when I compile ruby, I just enter that PID and bring it 
down to a lower percentage -- looks easy.  I suppose there are some 
interesting differential equations involved in determining whether a 
lower usage, but longer compile, might actually lead to higher 
temperature.  Bring on the math geeks.

Anyhow, quite interesting, I'll give it a go.

I might even set that up for flash websites with those scripts.  It's 
really annoying that a website can peg the CPU, even this ancient one.


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