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Memory Reprentation Mismatch In TOP

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Operating Systems Linux Red Hat Memory Reprentation Mismatch In TOP
# 1  
Old 09-27-2011
Memory Reprentation Mismatch In TOP
Hi All

I have server of Redhat Enterprise Linux 6.1 with the below configuration

OS: RHEL 6.1
Kernel:2.6.32-131.0.15.el6.x86_64
SOCKET:1
CPU:6
Memory 12 GB

I am running a tool & after that when i run top command i see the below output.

Code:
 
Tasks: 241 total, 2 running, 239 sleeping, 0 stopped, 0 zombie
Cpu(s): 45.1%us, 3.6%sy, 0.0%ni, 10.6%id, 40.6%wa, 0.0%hi, 0.1%si, 0.0%st
Mem: 12331548k total, 12178896k used, 152652k free, 228k buffers
Swap: 6301688k total, 3239180k used, 3062508k free, 9968k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
3061 sudhirj 20 0 7017m 3.7g 1540 D 96.7 31.3 3:40.54 encounter
3062 sudhirj 20 0 6942m 3.7g 1540 D 73.1 31.2 3:33.81 encounter
3058 sudhirj 20 0 7023m 3.7g 1540 D 40.5 31.5 3:40.29 encounter
3060 sudhirj 20 0 6966m 3.6g 1536 R 37.9 31.0 3:43.17 encounter
3059 sudhirj 20 0 6985m 3.7g 1540 D 17.3 31.5 3:35.93 encounter
78 root 20 0 0 0 0 S 15.6 0.0 0:51.42 kswapd0
3057 sudhirj 20 0 6989m 3.7g 1512 D 11.6 31.1 3:43.65 encounter

Total RAM on Server is 12 GB & if i m calculating RES then its showing 22 GB 3.7 for each thread & total 6 threads. Can any one let me know why its showing viered output.Is it a bug in OS.

Regards

Ankit[/SIZE]
Last edited by pludi; 09-27-2011 at 04:35 AM..
# 2  
Old 09-27-2011
Looking at your screen shot, it appears you are using up most of the 12GB of memory and also you are using 3GB of swap space.

As for the other 7GB i would hazard a guess that it is including shared memory in the Resident size column hence whatever is being shared is getting listed 6 times over, but thats only a guess.
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