T1: size(\@data):          177490392  total_size(\@data):    1837604848
  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
 6569 xxxxxxx   25   0 6355m 6.0g 1592 R 100.0 51.5   0:46.67 perl


T2: size($data_ref):       177490392  total_size($data_ref): 1837604848
  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
 6603 xxxxxxx   25   0 7208m 6.9g 1592 R 100.0 58.6   0:51.38 perl

T3: size($data_ref):       177490392  total_size($data_ref): 1755984649
  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
 6625 xxxxxxx   25   0 6315m 6.0g 1592 R 100.0 51.2   0:47.73 perl