To me it seems as though the swapping mechanism is just too simple to use swapspaces of remarkably varying speed effectively. It just goes "I'll fill this one and start chucking things on the next one when I have to". And no garbage collection either!

Since everyone always keeps referring to the n8*0s where compcache worked fine, I'm kind of interested as to why. Has anyone checked out what sort of an implementation and rules they used there? Perhaps the applications generally had a much smaller relative footprint?

As for any possible n900 implementation, I don't think there's ever going to be some omnisolution. I mean, there's such a width of types of programs you can run on a n900. Nothing could handle it all, especially since you *can*, if you prefer to, run applications that gulp half a gigabyte of active memory on one go.