root@am335x-ec:/# cat /proc/1/statm
6141 1181 699 232 0 4641 0
Table 1-3: Contents of the statm files (as of 2.6.8-rc3)
..............................................................................
Field Content
size total program size (pages) (same as VmSize in status)
resident size of memory portions (pages) (same as VmRSS in status)
shared number of pages that are shared (i.e. backed by a file, same as RssFile+RssShmem in status)
trs number of pages that are 'code' (not including libs; broken,includes data segment)
lrs number of pages of library (always 0 on 2.6)
drs number of pages of data/stack (including libs; broken,includes library text)
dt number of dirty pages (always 0 on 2.6)
refernece: /Documentation/filesystems/proc.txt