Hi, I'm trying to find private and shared memory usage of each process in Linux. One answer on Stack Overflow suggested using 'smem' utility (it reads /proc/<pid>/smap). However, the sum of all PSS values in 'smem' output is not equal to Used value of the 'free' utility (it reads /proc/meminfo). CLI output: $ sudo smem -t | tail -n 5 2950301 1002 gfstandalone_1_0 --test hw/ 0 1427244 1435899 1453060 2950368 1002 gfstandalone_1_1 --test hw/ 0 1432172 1440818 1457588 3012185 rgore java -classpath /home/rgore 0 2159256 2159348 2163268 ------------------------------------------------------------------------------- 537 23 702168 24722224 26865451 62093364 $ free -w total used free shared buffers cache available Mem: 65625036 26415500 511020 351372 1541640 37156876 38119868 Swap: 2097148 726148 1371000 So, I doubt the accuracy of the values in /proc/<pid>/smap. Is there a more reliable alternative? Regards, Rahul