osx man page for footprint

footprint(1)						    BSD General Commands Manual 					      footprint(1)

NAME
     footprint -- gathers memory information about a process or set of processes.

SYNOPSIS
     footprint -h
     footprint -proc <process-name> | -pid <pid> [-proc <process-name> | -pid <pid> [...]]
	       [-categories | -regions] [-swapped]
	       [-graphics] [-collapseSharing] [-targetChildren] [-skipIdleExitClean]
	       [-o <output-file-location>]
	       [-i <input-file-location>]

DESCRIPTION
     footprint provides a summary number and a categorization that describe memory use that most impacts the system.

     footprint gathers the sum of dirty/anonymous allocations in one or more processes along with their attributable kernel resources (currently
     KPRVT). Shared allocations only contribute to the footprint once, regardless of the number of times that they are mapped into any number of
     processes. The "footprint" value represents allocations that will cause the system to page in accommodation.

     footprint needs to be run as root. It can target multiple processes via multiple instances of the -proc and -pid flags.

OPTIONS
     -categories	 Detailed output on a per-VM-region type level (medium detail).

     -regions		 Display all memory objects and associated regions that contribute to each category (high detail).

     -swapped		 Display swapped bytes information where applicable.

     -graphics		 Gather graphics data if available (platform dependent, not tallied into footprint total).

     -collapseSharing	 Do not group shared memory output by process.

     -targetChildren	 Gather footprint information for the set of processes launched directly or indirectly by the target processes.

     -skipIdleExitClean  Do not gather information on any processes that are ready to be quit on memory pressure. Also applicable after the fact
			 with -i option.

OS X
								   June 28, 2012							      OS X