+RTS -s

 179,646,281,792 bytes allocated in the heap
  15,445,250,464 bytes copied during GC
   2,808,589,128 bytes maximum residency (24 sample(s))
      87,755,112 bytes maximum slop
            7666 MB total memory in use (0 MB lost due to fragmentation)

                                     Tot time (elapsed)  Avg pause  Max pause
  Gen  0     170754 colls,     0 par   13.690s  16.086s     0.0001s    1.9563s
  Gen  1        24 colls,     0 par    0.002s   0.003s     0.0001s    0.0016s

  INIT    time    0.000s  (  0.001s elapsed)
  MUT     time   45.460s  (8668.230s elapsed)
  GC      time   13.692s  ( 16.089s elapsed)
  EXIT    time    0.114s  (  1.391s elapsed)
  Total   time   59.266s  (8685.710s elapsed)

  %GC     time      23.1%  (0.2% elapsed)

  Alloc rate    3,951,724,779 bytes per MUT second

  Productivity  76.9% of total user, 99.8% of total elapsed