Hi all,
I've been lurking around for a while in digest mode and since it hasn't been mentioned before, I thought I'd suggest that the server-admins to take a look at www.openmosix.org
It is a very easy to use clustering solution for Linux where servers with high load can get help from servers with low load. It is applied as a kernel patch (there are RPMs available too) but unfortunately the latest kernel you can use is 2.4.22-3.
As I understand it, processor-power is one of the bottlenecks in the system, and even though you use load-balancing the load isn't even. I haven't tried this patch myself, but from what I read it is very easy to implement and use.
I suppose this is no straightahead thing, but in case you weren't aware of it...
-- Guttorm Flataboe
wikitech-l@lists.wikimedia.org