Hi list,

Attached is a patchset against 2.6.2-rc2-mm1 which includes two of
Nikita's patches and one of my own, and backs out the RSS limit patch
due to some problems (discussion of these patches on linux-mm).
The patchset improves VM performance under swapping quite significantly
for kbuild - its now close 2.4 or better in some cases.

I haven't done many other tests so I would like anyone who's had
swapping related slowdowns when moving from 2.4 to 2.6, and is
interested in helping improve it to test out the patch please.
I can make a patch against the -linus kernel if anyone would like.

Some benchmarks: http://www.kerneltrap.org/~npiggin/vm/3/
Green is 2.6, red is 2.4, purple is 2.6 with this patch.

Thank you.
Nick

PS (the usual disclaimer about mm patches vs your data)