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I just want to know the exact amount of memory one process consumes.
pgrep java -l
21786 java
The total memory I have is 1GB:
[root@home tmp]# free -m
total used free shared buffers cached
Mem: 1024 952 71 0 0 0
-/+ buffers/cache: 952 71
Swap: 0 0 0
java uses 413588K, that is more than 40% of memory being used by java
pmap 21786
......
b7fc2000 4K r-x-- /usr/lib/locale/en_US.utf8/LC_IDENTIFICATION
b7fc3000 4K rwx-- [ anon ]
b7fc4000 4K r-x-- [ anon ]
b7fc5000 108K r-x-- /lib/ld-2.5.so
b7fe0000 4K r-x-- /lib/ld-2.5.so
b7fe1000 4K rwx-- /lib/ld-2.5.so
bf85b000 84K rwx-- [ stack ]
total 413588K
top - 23:40:54 up 22 days, 6:17, 5 users, load average: 0.02, 0.04, 0.03
Tasks: 100 total, 2 running, 98 sleeping, 0 stopped, 0 zombie
Cpu(s): 1.7%us, 1.3%sy, 0.0%ni, 97.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 1048800k total, 975180k used, 73620k free, 0k buffers
Swap: 0k total, 0k used, 0k free, 0k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
21786 mirror 19 0 403m 102m 8712 S 0.3 10.0 0:10.52 java
Why does top result only show 10% of the memory is used by java process?
So the result of top and pmap is conflicted, the fommer indicates that more than 40% of the system memory is used by java process, but the result of top indicates that only 10% of the memory is used by java process.
Which one is correct?
How is one to know the exact amount of memory used by one process?