On one machine, 'top n 1 b' will show all the httpd processes ...
[php]
...
24456 nobody 9 0 16864 8960 4712 S 0.0 0.2 1:04 httpd
23048 nobody 9 0 17364 11M 4688 S 0.0 0.2 1:19 httpd
12025 nobody 9 0 15416 10M 4496 S 0.0 0.2 1:10 httpd
22810 nobody 9 0 14552 9080 4328 S 0.0 0.2 0:35 httpd
32020 nobody 9 0 14204 6728 4124 S 0.0 0.1 0:30 httpd
16283 nobody 9 0 16408 7560 4592 S 0.0 0.1 2:24 httpd
16287 nobody 9 0 17848 14M 4708 S 0.0 0.3 3:28 httpd
...
[/php]

however, it is not on my other machine. (I can only see one httpd in top)

How can I make it so that it can show all?