Before program is run:

virt2:/proc/virtual/1051# cat limit
PROC:            7              20              -1           0
VM:          30573          956901              -1      267390
VML:             0               0              -1           0
RSS:          1194            5800           65535           9
ANON:         1318          777856              -1           0
FILES:         123             196              -1           0
OFD:            40              43              -1           0
LOCKS:           1               7              -1           0
SOCK:            3               5              -1           0
MSGQ:            0               0              -1           0
SHM:             0               0              -1           0
virt2:/proc/virtual/1051# free
             total       used       free     shared    buffers     cached
Mem:       4044076    1625044    2419032          0      47276     587692
-/+ buffers/cache:     990076    3054000
Swap:      3919352    3002968     916384




When program is running:
virt2:/proc/virtual/1051# cat limit
PROC:            8              20              -1           0
VM:         293342          956901              -1      267390
VML:             0               0              -1           0
RSS:          1269            5800           65535           9
ANON:       263481          777856              -1           0
FILES:         126             196              -1           0
OFD:            43              43              -1           0
LOCKS:           1               7              -1           0
SOCK:            3               5              -1           0
MSGQ:            0               0              -1           0
SHM:             0               0              -1           0
virt2:/proc/virtual/1051# free
             total       used       free     shared    buffers     cached
Mem:       4044076    2676652    1367424          0      47680     590740
-/+ buffers/cache:    2038232    2005844
Swap:      3919352    3002416     916936
virt2:/proc/virtual/1051#

Pid entry:
virt2:/proc/virtual/1051# vps auxww|grep a.out
root     29160  1051 test64        22.3 25.9 1051076 1048952 pts/15 S+ 17:00   0:08 ./a.out