True
      86,345,488 bytes allocated in the heap
      69,562,224 bytes copied during GC
      15,995,552 bytes maximum residency (5 sample(s))
      18,124,128 bytes maximum slop
              15 MB total memory in use (0 MB lost due to fragmentation)

                                     Tot time (elapsed)  Avg pause  Max pause
  Gen  0        40 colls,    40 par    0.171s   0.050s     0.0013s    0.0041s
  Gen  1         5 colls,     4 par    0.155s   0.056s     0.0111s    0.0168s

  Parallel GC work balance: 12.38% (serial 0%, perfect 100%)

  TASKS: 18 (1 bound, 17 peak workers (17 total), using -N8)

  SPARKS: 112683 (111621 converted, 0 overflowed, 0 dud, 608 GC'd, 454 fizzled)

  INIT    time    0.002s  (  0.013s elapsed)
  MUT     time   28.174s  (  4.254s elapsed)
  GC      time    0.326s  (  0.106s elapsed)
  EXIT    time    0.011s  (  0.003s elapsed)
  Total   time   28.513s  (  4.376s elapsed)

  Alloc rate    3,064,723 bytes per MUT second

  Productivity  98.8% of total user, 97.2% of total elapsed

word-search-exe inputs/large_input_500.txt 500 500 "haskell" +RTS -N8 -s -ls  28.52s user 0.47s system 658% cpu 4.403 total
