In initial tests with this patch against pre7-3 on a 128 MB box, the
kswapd problem seems to be eliminated. I used large 'dd' tests and
general application loads, and the general paging behavior (which was
seemingly very unbalanced in pre5) seems reasonable IMHO -- i.e. the
cache shrinks properly. I haven't tried it out on lower-end hardware yet.
However...
... the classzone-18 patch has caused _innumerable_ lockups of my
machine -- all of them relating to mail programs so far. Both 'pine'
(ver 4.21) and 'mutt' cause very reproduceable and _instantaneous_ hard
lockups if I attempt to expunge messages from the mail spool or compose a
new message. A simple test, editing a file from pine's editor 'pico'
(ver 3.7) caused a lockup upon writing the output file.
No oopses, no messages, just instant death[TM].
Not pretty. Has anyone else been able to reproduce this? This is
unfortunate, since performance while the machine is actually alive
seems quite good.
I reverted to 'stock' pre7-3 (editing out the #error line in
mm/vmscan.c) and there are no such problems (other than excessively
CPU-intensive VM and I/O behavior).
Configuration info is at http://loke.as.arizona.edu/~ckulesa/config
Email for additional details or testing against new patches.
-Craig
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