True
      89,101,120 bytes allocated in the heap
      73,763,520 bytes copied during GC
      16,214,448 bytes maximum residency (5 sample(s))
      16,283,216 bytes maximum slop
              15 MB total memory in use (0 MB lost due to fragmentation)

                                     Tot time (elapsed)  Avg pause  Max pause
  Gen  0        49 colls,    49 par    0.217s   0.037s     0.0007s    0.0043s
  Gen  1         5 colls,     4 par    0.113s   0.044s     0.0088s    0.0128s

  Parallel GC work balance: 19.32% (serial 0%, perfect 100%)

  TASKS: 10 (1 bound, 9 peak workers (9 total), using -N4)

  SPARKS: 112683 (111190 converted, 0 overflowed, 0 dud, 956 GC'd, 537 fizzled)

  INIT    time    0.001s  (  0.010s elapsed)
  MUT     time   25.860s  (  6.599s elapsed)
  GC      time    0.330s  (  0.081s elapsed)
  EXIT    time    0.017s  (  0.009s elapsed)
  Total   time   26.207s  (  6.700s elapsed)

  Alloc rate    3,445,573 bytes per MUT second

  Productivity  98.7% of total user, 98.5% of total elapsed

word-search-exe inputs/large_input_500.txt 500 500 "haskell" +RTS -N4 -s -ls  26.21s user 0.20s system 392% cpu 6.728 total
