[SGVLUG] used memory on a 4 GB system.

[James Neff]

Greetings,

I ran top and here are the results:

top - 05:37:23 up 8 days,  1:44,  2 users,  load average: 0.00, 0.00, 0.00
Tasks:  99 total,   1 running,  98 sleeping,   0 stopped,   0 zombie
Cpu(s):  0.0% us,  0.1% sy,  0.0% ni, 99.9% id,  0.0% wa,  0.0% hi,  0.0% si
Mem:   4039408k total,  4004660k used,    34748k free,    59444k buffers
Swap:  2031608k total,      128k used,  2031480k free,  3713780k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
    1 root      16   0  7196  704  592 S    0  0.0   0:00.99 init
    2 root      RT   0     0    0    0 S    0  0.0   0:00.11 migration/0
    3 root      34  19     0    0    0 S    0  0.0   0:00.00 ksoftirqd/0
    4 root      RT   0     0    0    0 S    0  0.0   0:00.00 watchdog/0
    5 root      RT   0     0    0    0 S    0  0.0   0:00.15 migration/1
    6 root      34  19     0    0    0 S    0  0.0   0:00.00 ksoftirqd/1
    7 root      RT   0     0    0    0 S    0  0.0   0:00.00 watchdog/1
    8 root      RT   0     0    0    0 S    0  0.0   0:00.03 migration/2


This is a dual Opteron system (2 processors) with 2 GB of RAM for each 
processor.

My question is, why does it say almost all of the memory is used?  Is 
this something I should be worried about or am I doing something wrong?

uname -a
Linux appserver2.tethyshealth.com 2.6.15-1.2054_FC5 #1 SMP Tue Mar 14 
15:48:20 EST 2006 x86_64 x86_64 x86_64 GNU/Linux

Thanks in advance,
James