page size=4096 bytes on all except 680x0 (where it is 8k)
kfs block size=4096 bytes (in build.c) -> disk/kfs -rb4096 -f DISK

24Meg = 6144 pages in system
	kernel takes 30% (1843 pages) by default
	leaving 70% (4300 pages) for user programs

PC has 8Meg -> 2048 pages
	kernel 30%:  614 pages
	users  70%: 1433 pages
     or kernel 40%:  819 pages
	users  60%: 1228 pages

Magnum swap: 19200 pages = 75Meg

VGA:	1024x768x8 = 768kB = 192 pages
	 640x480x8 = 300kB =  75 pages

system: IBM PS/ValuePoint, 486DX 66MHz, 8Meg, Adaptec 1542CF, Seagate ST11200N

1268 free pages, 5072Kbytes, swap 32592K, highwater 252K, headroom 312K
CPU is a 26MHz 486DX (cpuid: ax400 dx0)
scsi0: aha1542 port 330 irq11, dma 5

system: ACER 486DX4-100, 8Meg, with kernelpercent=40

1074 free pages, 4296Kbytes, swap 29256K, highwater 212K, headroom 264K
CPU is a 99MHz Intel DX4 (cpuid: ax400 dx3)
ether0:3C509: port 250 irq 10 addr 0 size 0 width 16:00a0241521e7
scsi0: aha1542 port 330 irq9, dma 5

with 8 1/2 not running and vga at 1024x768x8 (or any other setting):
/dev/swap: 369/1074 memory 0/6240 swap

with 8 1/2 running and vga at 1024x768x8:
/dev/swap: 491/1074 memory 0/6240 swap

with 8 1/2 running and vga at 640x480x1:
/dev/swap: 463/1074 memory 0/6240 swap

Therefore, starting up 8 1/2 uses 94 pages (376K)
from ps, 8 1/2 uses 284K, rc shell uses 112K
others use: fs: 600K, dossrv: 436K, fb/9v: 360K

with 8 1/2 running and vga at 640x480x1, and running '9v mandrill':
/dev/swap: 581/1074 memory 0/6240 swap

with 8 1/2 running and vga at 640x480x1, and running 2 x '9v mandrill':
/dev/swap: 681/1074 memory 0/6240 swap
with 3:
/dev/swap: 778/1074 memory 0/6240 swap
with 4:
/dev/swap: 878/1074 memory 0/6240 swap

system: ACER 486DX4-100, 8Meg, with kernelpercent=30

1253 free pages, 5012Kbytes, swap 29972K, highwater 248K, headroom 308K
CPU is a 99MHz Intel DX4 (cpuid: ax400 dx3)
ether0:3C509: port 250 irq 10 addr 0 size 0 width 16:00a0241521e7
scsi0: aha1542 port 330 irq9, dma 5

with 8 1/2 not running and vga at 1024x768x8 (or any other setting):
/dev/swap: 387/1253 memory 0/6240 swap

with 8 1/2 running and vga at 1024x768x8 (can only open a tiny window):
/dev/swap: 488/1253 memory 0/6240 swap
therefore, window system uses 101 pages (404K)

system: ACER 486DX4-100, 8Meg, with kernelpercent=50

895 free pages, 3580Kbytes, swap 28540K, highwater 176K, headroom 220K
CPU is a 99MHz Intel DX4 (cpuid: ax400 dx3)
ether0:3C509: port 250 irq 10 addr 0 size 0 width 16:00a0241521e7
scsi0: aha1542 port 330 irq9, dma 5

with 8 1/2 not running and vga at 1024x768x8 (or any other setting):
/dev/swap: 350/895 memory 0/6240 swap

with 8 1/2 running and vga at 1024x768x8 (can only open a tiny window):

system: ACER 486DX4-100, 16Meg, with kernelpercent not set:

2687 free pages, 10748Kbytes, swap 56188K, highwater 536K, headroom 668K
CPU is a 99MHz Intel DX4 (cpuid: ax400 dx3)
ether0:3C509: port 250 irq 10 addr 0 size 0 width 16:00a0241521e7
scsi0: aha1542 port 330 irq9, dma 5

with 8 1/2 not running and vga at 1024x768x8 (or any other setting):
/dev/swap: 530/2687 memory 0/11360 swap