understanding pmap

[ESGLinux]

Hi All,

I´m looking for a memory problem on a system using the pmap command.

This is an output:
# pmap -d 4302
#
.....
4154e000       4 rwx-- 000000004154e000 000:00000   [ anon ]
4154f000  133252 rwx-- 000000004154f000 000:00000   [ anon ]
49770000  128896 rwx-- 0000000049770000 000:00000   [ anon ]
51550000 1398144 rwx-- 0000000051550000 000:00000   [ anon ]
a6ab0000  172288 rwx-- 00000000a6ab0000 000:00000   [ anon ]
b12f0000    2432 rwx-- 00000000b12f0000 000:00000   [ anon ]
b1550000       4 r-x-- 0000000000000000 068:00002 librmi.so
b1551000       4 rwx-- 0000000000000000 068:00002 librmi.so
b1552000     584 rwx-- 00000000b1552000 000:00000   [ anon ]
b15e4000     184 rwx-- 00000000b15e4000 000:00000   [ anon ]
b1612000   37216 rwx-- 00000000b1612000 000:00000   [ anon ]
b3a6a000   11936 rwx-- 00000000b3a6a000 000:00000   [ anon ]
b4612000    8636 r-xs- 0000000000000000 068:00002 charsets.jar
.....
mapped: 2391764K    writeable/private: 2217000K    shared: 158336K

I have a lot of used memory and the line that takes my attention is this:
51550000 1398144 rwx-- 0000000051550000 000:00000   [ anon ]

But now I don´t know how to handle it. What can I do with this info? how can
I know why there is so much memory there?

Thanks in advance

ESG