shmem information

[Patrick Boe <pboe@sccs.swarthmore.edu>]

Hi all,

I'm trying to get some system data, and I'm wondering if there's a tool
(system call, something) I can use to get it, or if I'll have to code the
data collection into the kernel myself.  I want to gather periodic
snapshots of shared memory information for all running processes on a Sun
SMP workstation running debian 2.4.x.  In each snapshot, I want to know,
for each running task, how much (%) of that task's virtual address space
is shared.  In the end, I want to be able to put together some statistic
that measures the average "sharedness" of memory pages for some a given
process load.

Anyone know of a tool that gathers this sort of information?

TIA,
Patrick