On Thu, 23 Dec 2004, Linus Torvalds wrote:

Personally, at least for a desktop usage, I think that the load average 
would work wonderfully well. I know my machines are often at basically 
zero load, and then having low-latency zero-pages when I sit down sounds 
like a good idea. Whether there is _enough_ free memory around for a 
5-second thing to work out well, I have no idea..

Isn't the basic premise very similar to the following paper;

http://www.usenix.org/publications/library/proceedings/osdi99/full_papers/dougan/dougan_html/dougan.html

In fact i thought ppc32 did something akin to this.
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