FreeBSD 2.0 NOTES
Last pid is compiler depended. $ strings /kernel | grep _nextpid

DESCRIPTION OF MEMORY
Memory: 10M Act 1208K Inact 3220K Wired 132K Free 25% Swap, 2924Kin 2604Kout

K:  Kilobyte

M:  Megabyte

%:  1/100

Act:
    number of pages active

Incat:
    number of pages inactive

Wired:
    number of pages wired down

Free:
    number of pages free

Swap:
    swap usage

Kin:
    kilobytes swap pager pages paged in (last interval)

Kout:
    kilobytes swap pager pages paged out (last interval)

See /usr/include/sys/vmmeter.h and /sys/vm/vm_meter.c.

Wolfram Schneider <wosch@cs.tu-berlin.de>