[NCLUG] memory usage

[Daniel Herrington]

All this talk about limiting memory usage got me to thinking.
When I do a "top" I get the following:


  1:49pm  up 14:03,  3 users,  load average: 0.01, 0.10, 0.23
60 processes: 59 sleeping, 1 running, 0 zombie, 0 stopped
CPU states:  8.3% user,  0.6% system,  5.4% nice,  0.6% idle
Mem:   126732K av,  122636K used,    4096K free,       0K shrd,    3028K buff
Swap:  329292K av,     528K used,  328764K free                   35144K cached

  PID USER     PRI  NI  SIZE  RSS SHARE STAT  LIB %CPU %MEM   TIME COMMAND
 3834 daniel    15   0   848  848   652 R       0  2.8  0.6   0:00 top
    1 root       8   0   476  476   404 S       0  0.0  0.3   0:04 init
    2 root       9   0     0    0     0 SW      0  0.0  0.0   0:00 keventd
    3 root       9   0     0    0     0 SW      0  0.0  0.0   0:00 kswapd
    4 root       9   0     0    0     0 SW      0  0.0  0.0   0:00 kreclaimd
    5 root       9   0     0    0     0 SW      0  0.0  0.0   0:00 bdflush
    6 root       9   0     0    0     0 SW      0  0.0  0.0   0:00 kupdate
  341 bin        9   0   372  368   284 S       0  0.0  0.2   0:00 portmap
  363 root       9   0   540  540   452 S       0  0.0  0.4   0:00 rpc.statd
  392 root       9   0   540  540   440 S       0  0.0  0.4   0:00 automount
  444 root       9   0   532  532   432 S       0  0.0  0.4   0:00 syslogd
  453 root       9   0  1044 1044   388 S       0  0.0  0.8   0:00 klogd
  467 nobody     9   0   592  592   472 S       0  0.0  0.4   0:00 identd
  471 nobody     8   0   592  592   472 S       0  0.0  0.4   0:00 identd
  475 nobody     9   0   592  592   472 S       0  0.0  0.4   0:00 identd
  476 nobody     9   0   592  592   472 S       0  0.0  0.4   0:00 identd
  478 nobody     9   0   592  592   472 S       0  0.0  0.4   0:00 identd
  485 daemon     9   0   448  448   368 S       0  0.0  0.3   0:00 atd
  499 root       8   0   600  600   492 S       0  0.0  0.4   0:00 crond
  517 root       9   0   468  468   392 S       0  0.0  0.3   0:00 inetd
  531 root       9   0   512  512   428 S       0  0.0  0.4   0:00 lpd
  580 root       8   0  1040 1040   748 S       0  0.0  0.8   0:00 sendmail
  595 root       9   0   400  400   332 S       0  0.0  0.3   0:00 gpm
  609 root       9   0  4148 3832  3608 S       0  0.0  3.0   0:00 httpd
  616 nobody     9   0  4128 3656  3432 S       0  0.0  2.8   0:00 httpd
  617 nobody     9   0  4128 3652  3428 S       0  0.0  2.8   0:00 httpd
  618 nobody     9   0  4128 3652  3428 S       0  0.0  2.8   0:00 httpd
  619 nobody     9   0  4128 3652  3428 S       0  0.0  2.8   0:00 httpd
  620 nobody     9   0  4128 3652  3428 S       0  0.0  2.8   0:00 httpd
  621 nobody     9   0  4128 3652  3428 S       0  0.0  2.8   0:00 httpd
  622 nobody     9   0  4128 3652  3428 S       0  0.0  2.8   0:00 httpd
  623 nobody     9   0  4128 3652  3428 S       0  0.0  2.8   0:00 httpd
  706 xfs        9   0  3884 3884   788 S       0  0.0  3.0   0:00 xfs
  720 root       9   0  1856 1824  1648 S       0  0.0  1.4   0:00 smbd
  729 root       9   0   976  976   772 S       0  0.0  0.7   0:00 nmbd
  769 root       9   0   604  600   480 S       0  0.0  0.4   0:01 sshd
  771 root       9   0  1068 1068   816 S       0  0.0  0.8   0:07 fetchmail
  774 root       9   0   408  408   340 S       0  0.0  0.3   0:00 mingetty
  775 root       9   0   408  408   340 S       0  0.0  0.3   0:00 mingetty
  776 root       9   0   408  408   340 S       0  0.0  0.3   0:00 mingetty
...etc...etc...etc...


Does this mean that 122636K of memory is _currently_ being used?  If
so, then who's using it?  If not, then is there a better memory usage
monitoring tool, to allow me to see what process is wasting so much
memory?  (I'm only running my window manager, xemacs in vm mode, and a
couple of xterms).

Regards,
  Daniel

-- 
Daniel Herrington, KC0IFV
http://members.home.net/daniel.herrington/
Home of Herky, my robot.