gram file to profile
   -p,--png=FILE          Generate PNG graphic and store it in FILE
   -d,--data=FILE         Generate binary data file and store it in FILE
   -u,--unbuffered        Don't buffer output
   -b,--buffer=SIZE       Collect SIZE entries before writing them out
      --no-timer          Don't collect additional information through timer
   -m,--mmap              Also trace mmap & friends

   -?,--help              Print this help and exit
      --usage             Give a short usage message
   -V,--version           Print version information and exit

 The following options only apply when generating graphical output:
   -t,--time-based        Make graph linear in time
   -T,--total             Also draw graph of total memory use
      --title=STRING      Use STRING as title of the graph
   -x,--x-size=SIZE       Make graphic SIZE pixels wide
   -y,--y-size=SIZE       Make graphic SIZE pixels high

Mandatory arguments to long options are also mandatory for any corresponding
short options.

