Is there a good way to figure out where the memory on a system has actually
gone?  I have a machine with 256MB of core, and it frequently pages heavily
when swapping from one window to another.  If I count all of the 8 or so
kernel processes *each* as 23M, I can come up with 300M in use, but if I
don't count them that way, I can't come even close; I find that the system
only thinks it's using about 150MB, and yet, it's paging.  vmstat says 196512
avm, 808 fre.  "vmstat" says the kernel is using 3.5MB.

Where's the rest?

-s