Thanks to Tobias, I now have my PowerBook 1400 with a Sonnet G3 running
Debian/Ubuntu "Breezy Badger".
One thing I noticed though is that the disk cache is taking up close to 40%
while running X, and I was wondering if there was any way to compile the
kernel to tweak that and/or how willing the kernel is to swap out memory to
the swap partition.
The 2.6 kernel has the ability to control the "swappiness" of the kernel via
sysctl and/or /proc/vm, but unfortunately 2.4 doesn't have anything terribly
useful in /proc/vm that I know of. 2.4, AFAIK, was greatly criticized for
its willingness to sacrifice program memory to preserve the disk cache.