root@lisa:~# smem -w -K /boot/vmlinuz-3.1.0-1-amd64.unpacked -M 4G
Area                           Used      Cache   Noncache
firmware/hardware                 0          0          0
kernel image                   7932          0       7932
kernel dynamic memory       1332172    1098456     233716
userspace memory            2196244     121540    2074704
free memory                  500252     500252          0
root@lisa:~# free -m
             total       used       free     shared    buffers     cached
Mem:          3934       3448        485          0         67        889
-/+ buffers/cache:       2492       1442
Swap:         3906        259       3646