From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <d29cc6e49ebdd21664391bdc5b722e3a@plan9.bell-labs.com>
Subject: Re: [9fans] output of ps(1) memory usage
From: David Presotto <presotto@closedmind.org>
To: 9fans@cse.psu.edu
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Date: Thu, 20 Feb 2003 21:43:42 -0500
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> Is there an easy way to determine the amount of memory
> really inuse (or physically mapped?) within a process?

cat /proc/<pid>/segment.  The first number is the
range, the second is the reference count.  The ref will help
you figure out how many other procs are using the
segment.  For example:


presotto@presto-home% ps|grep rio
presotto         14    0:00   0:03     752K Rendez   rio
presotto        113    0:00   0:00     752K Pread    rio
presotto        114    0:00   0:00     752K Pread    rio
presotto        115    0:00   0:00     752K Rendez   rio
presotto        116    0:00   0:00     752K Pread    rio
presotto        117    0:00   0:00     752K Pread    rio
presotto        177    0:00   0:00     752K Await    rio
presotto@presto-home% cat /proc/113/segment
Stack     7efff000 7ffff000    1
Text   R  00001000 0002d000    7
Data      0002d000 00036000    7
Bss       00036000 000bd000    7

There are 7 rio's...