Testing bulk insert and random access of 1000 elements and 10000000 random lookups
  Candidate: Sparkey
    - creation time (wall): 0.00
    - creation time  (cpu): 0.00
    -            file size: 28384
    -   lookup time (wall): 4.25
    -   lookup time  (cpu): 4.11
  Candidate: Level-db
    - creation time (wall): 0.25
    - creation time  (cpu): 0.00
    -            file size: 22128
    -   lookup time (wall): 9.75
    -   lookup time  (cpu): 9.59

Testing bulk insert and random access of 1000000 elements and 10000000 random lookups
  Candidate: Sparkey
    - creation time (wall): 0.50
    - creation time  (cpu): 0.51
    -            file size: 34177984
    -   lookup time (wall): 5.75
    -   lookup time  (cpu): 5.72
  Candidate: Level-db
    - creation time (wall): 7.00
    - creation time  (cpu): 1.78
    -            file size: 24706291
    -   lookup time (wall): 57.25
    -   lookup time  (cpu): 57.13

Testing bulk insert and random access of 10000000 elements and 10000000 random lookups
  Candidate: Sparkey
    - creation time (wall): 5.50
    - creation time  (cpu): 5.53
    -            file size: 413777988
    -   lookup time (wall): 6.50
    -   lookup time  (cpu): 6.50
  Candidate: Level-db
    - creation time (wall): 68.75
    - creation time  (cpu): 17.15
    -            file size: 257706847
    -   lookup time (wall): 34.25
    -   lookup time  (cpu): 34.14