who can help me save my memory?

"cat maps" print nothing,the directory /proc/(pppd pid) is as following:

arm platform:

# cat maps# ls -l

-r--r--r-- 1 root 0 0 Mar 13 10:13 mounts

lrwxrwxrwx 1 root 0 0 Mar 13 10:13 exels: ls:./exe: No such

file or directory

lrwxrwxrwx 1 root 0 0 Mar 13 10:13 root -> /

lrwxrwxrwx 1 root 0 0 Mar 13 10:13 cwd -> /

-rw------- 1 root 0 0 Mar 13 10:13 mem

-r--r--r-- 1 root 0 0 Mar 13 10:13 maps

-r--r--r-- 1 root 0 0 Mar 13 10:13 statm

-r--r--r-- 1 root 0 0 Mar 13 10:13 stat

-r--r--r-- 1 root 0 0 Mar 13 10:13 cmdline

-r--r--r-- 1 root 0 0 Mar 13 10:13 status

-r-------- 1 root 0 0 Mar 13 10:13 environ

dr-x------ 2 root 0 0 Mar 13 10:13 fd

nios2 flatform:

# cat maps# ls -l

-r-------- 1 root root 0 Nov 30 00:01 auxv

-r--r--r-- 1 root root 0 Nov 30 00:00 cmdline

lrwxrwxrwx 1 root root 0 Nov 30 00:01 cwd -> /

-r-------- 1 root root 0 Nov 30 00:01 environ

lrwxrwxrwx 1 root root 0 Nov 30 00:01 exels: ./exe: No such f

le or directory

dr-x------ 2 root root 0 Nov 30 00:01 fd

-r--r--r-- 1 root root 0 Nov 30 00:01 maps

-rw------- 1 root root 0 Nov 30 00:01 mem

-r--r--r-- 1 root root 0 Nov 30 00:01 mounts

-rw-r--r-- 1 root root 0 Nov 30 00:01 oom_adj

-r--r--r-- 1 root root 0 Nov 30 00:01 oom_score

lrwxrwxrwx 1 root root 0 Nov 30 00:01 root -> /

-r--r--r-- 1 root root 0 Nov 30 00:00 stat

-r--r--r-- 1 root root 0 Nov 30 00:01 statm

-r--r--r-- 1 root root 0 Nov 30 00:01 status

dr-xr-xr-x 3 root root 0 Nov 30 00:01 task