reports physical memory usage, taking shared memory pages

into account. Unshared memory is reported as the USS (Unique Set Size).

Shared memory is divided evenly among the processes sharing that memory.

The unshared memory (USS) plus a process s proportion of shared memory

is reported as the PSS (Proportional Set Size). The USS and PSS only

include physical memory usage. They do not include memory that has been

swapped out to disk.-reports physical memory usage, taking shared memory pages

into account.　Unshared memory is reported as the USS (Unique Set Size).

Shared memory is divided evenly among the processes sharing that memory.

The unshared memory (USS) plus a process s proportion of shared memory

is reported as the PSS (Proportional Set Size).　The USS and PSS only

include physical memory usage.　They do not include memory that has been

swapped out to disk.