# while true; do cat /proc/1361403936/vmstat | grep private; sleep 300; done 
as_stats.map_private=0x2f7a (47.476MB)
as_stats.map_private=0x3278 (50.468MB)
as_stats.map_private=0x3540 (53.250MB)
as_stats.map_private=0x364e (54.304MB)
as_stats.map_private=0x3762 (55.382MB)
as_stats.map_private=0x39ce (57.804MB)
as_stats.map_private=0x3a88 (58.531MB)
as_stats.map_private=0x3b5c (59.359MB)
as_stats.map_private=0x3cbe (60.742MB)
as_stats.map_private=0x3d60 (61.375MB)
as_stats.map_private=0x3d78 (61.468MB)
as_stats.map_private=0x3e17 (62.089MB)
as_stats.map_private=0x3fb7 (63.714MB)