Swap not use

["varun koli" <kolivarun gmail com>]

hi all 
 
I have RHL 4 Enterprise system,when i fire the top command showing swqp totaly free what is issue can tell me 

output of top command as :-
 12:06:48  up 30 days, 11:43,  7 users,  load average: 0.22
, 0.14, 0.10
138 processes: 137 sleeping, 1 running, 0 zombie, 0 stopped
CPU states:  cpu    user    nice  system    irq  softirq  iowait    idle
           total    6.2%    0.0%    1.1%   0.0%     0.1%   11.7%   
80.5%
           cpu00    7.3%    0.0%    1.5%   0.1%     0.5%   11.3%   78.8%
           cpu01    5.0%    0.0%    1.4%   0.0%     0.0%   12.2%   81.4%
           cpu02    6.3%    0.0%    1.5%   0.0%     0.0%   11.5%
   80.4%
           cpu03    6.1%    0.0%    0.1%   0.0%     0.0%   11.9%   81.6%
Mem:  3950356k av, 3132852k used,  817504k free,       0k shrd,  131108k buff
                   1068352k actv,  663360k in_d,   29568k in_c
Swap: 4096296k av,       0k used, 4096296k free                 1800272k cached

  PID USER     PRI  NI  SIZE  RSS SHARE STAT %CPU %MEM   TIME CPU COMMAND
28548 pretups_  25   0 12604  12M  6484 S     1.7  0.3
   0:00   0 java
28569 pretups_  25   0 12776  12M  6484 S     1.7  0.3   0:00   1 java
 2192 pretups5  16   0 72776  71M 12972 S     0.3  1.8 154:57   1 java
 1894 pretups_  16   0 71020  69M 11656 S     0.2  1.7
 180:39   1 java
 1963 pretups3  17   0 62084  60M 12968 S     0.1  1.5  34:08   0 java
19778 root      25   0  287M 287M 14524 S     0.1  7.4 320:34   0 java
    1 root      15   0   512  512   456 S     0.0  0.0
   0:25   1 init
    2 root      RT   0     0    0     0 SW    0.0  0.0   0:00   0 migration/0
    3 root      RT   0     0    0     0 SW    0.0  0.0   0:00   1 migration/1
    4 root      RT   0     0    0     0 SW    
0.0  0.0   0:00   2 migration/2
    5 root      RT   0     0    0     0 SW    0.0  0.0   0:00   3 migration/3
    6 root      15   0     0    0     0 SW    0.0  0.0   0:00   3 keventd
    7 root      34  19     0    0     0 SWN   
0.0  0.0   0:00   0 ksoftirqd/0
    8 root      34  19     0    0     0 SWN   0.0  0.0   0:00   1 ksoftirqd/1
    9 root      34  19     0    0     0 SWN   0.0  0.0   0:00   2 ksoftirqd/2
   10 root      34  19     0    0     0 SWN   
0.0  0.0   0:00   3 ksoftirqd/3
   13 root      25   0     0    0     0 SW    0.0  0.0   0:00   2 bdflush
   11 root      15   0     0    0     0 SW    0.0  0.0   1:04   0 kswapd
   12 root      15   0     0    0     0 SW    
0.0  0.0   0:27   2 kscand
   14 root      15   0     0    0     0 SW    0.0  0.0   0:35   0 kupdated
   15 root      25   0     0    0     0 SW    0.0  0.0   0:00   0 mdrecoveryd
   21 root      15   0     0    0     0 SW    
0.0  0.0   0:00   2 ahc_dv_0
   22 root      15   0     0    0     0 SW    0.0  0.0   0:00   0 ahc_dv_1
   23 root      25   0     0    0     0 SW    0.0  0.0   0:00   2 scsi_eh_0
   24 root      25   0     0    0     0 SW    
0.0  0.0   0:00   2 scsi_eh_1
   28 root      15   0     0    0     0 SW    0.0  0.0   0:30   3 kjournald
   84 root      25   0     0    0     0 SW    0.0  0.0   0:00   2 khubd
  163 root      19   0     0    0     0 SW    
0.0  0.0   0:00   3 kjournald
  164 root      15   0     0    0     0 SW    0.0  0.0   0:53   1 kjournald
  165 root      15   0     0    0     0 SW    0.0  0.0   1:21   3 kjournald
  166 root      15   0     0    0     0 SW    
0.0  0.0   1:24   0 kjournald
  167 root      15   0     0    0     0 SW    0.0  0.0   0:04   1 kjournald
  168 root      15   0     0    0     0 SW    0.0  0.0   0:05   3 kjournald
  169 root      15   0     0    0     0 SW    
0.0  0.0   0:02   0 kjournald



regards
varun