/proc/$pid/statm shows the following values, separated by a space: size | Total program size (pages) | Same as VmSize in status |
resident | Size of memory pritions (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 segments) | |
lrs | Number of pages of library (always 0) | |
drs | Number of pages of data/stack (including libs; broken, includes library text) | |
dt | Number of dirty pages |