> 1 billion chars (2^30 1073741824)

Storable
    runtime : 2.106 seconds
    memory  : 4,102 megabytes

Sereal
    runtime : 1.549 seconds
    memory  : 3,078 megabytes
  
Sereal with compression enabled
    runtime : 2.170 seconds
    memory  : 2,104 megabytes