通过查看帮助，返回了如下信息：
Usage: pmap [options] pid [pid ...]
Options:
-x, --extended show details
-X show even more details
WARNING: format changes according to /proc/PID/smaps
-XX show everything the kernel provides
-c, --read-rc read the default rc
-C, --read-rc-from=<file> read the rc from file
-n, --create-rc create new default rc
-N, --create-rc-to=<file> create new rc to file
NOTE: pid arguments are not allowed with -n, -N
-d, --device show the device format
-q, --quiet do not display header and footer
-p, --show-path show path in the mapping
-A, --range=<low>[,<high>] limit results to the given range
-h, --help display this help and exit -V, --version output version information and exit
For more details see pmap(1).
然后列出某个进程(PID:8868)的信息时如下：
pmap -x 8868
Address Kbytes RSS Dirty Mode Mapping
00007f789ec2d000 1668 1384 0 r-x-- libc-2.19.so
00007f789edce000 2048 0 0 ----- libc-2.19.so
00007f789efce000 16 16 16 r---- libc-2.19.so
00007f789efd2000 8 8 8 rw--- libc-2.19.so
00000000020e0000 4008 4008 4008 rw--- [ anon ]
00007f787c000000 132 24 24 rw--- [ anon ]
00007f787c021000 65404 0 0 ----- [ anon ]
00007f7880000000 132 12 12 rw--- [ anon ]
00007f7880021000 65404 0 0 ----- [ anon ]
00007f7884000000 148 92 92 rw--- [ anon ]
00007f7884025000 65388 0 0 ----- [ anon ]
以上列表项的含义如下:
Address: 指定内存分配地址
Kbytes: 指定内存实际分配的内存大小
RSS: 指定程序实际占用的内存大小
Mapping: 指定该内存的模块的名称