What do the following numbers mean?

[Jurriaan Hage]

Dear all,

I ran a small example program, and this is what I got from using the -s flag:

486,550,118,368 bytes allocated in the heap
323,749,418,440 bytes copied during GC
  1,842,979,344 bytes maximum residency (219 sample(s))
    204,653,688 bytes maximum slop
           4451 MB total memory in use (0 MB lost due to fragmentation)

 Generation 0: 924208 collections,     0 parallel, 1861.17s, 1866.05s elapsed
 Generation 1:   219 collections,     0 parallel, 283.44s, 284.01s elapsed

 INIT  time    0.00s  (  0.00s elapsed)
 MUT   time  740.61s  (745.45s elapsed)
 GC    time  2144.61s  (2150.06s elapsed)
 EXIT  time    0.00s  (  0.00s elapsed)
 Total time  2885.23s  (2895.51s elapsed)

 %GC time      74.3%  (74.3% elapsed)

 Alloc rate    656,953,176 bytes per MUT second


Can anyone tell me what the exact difference is between
  1,842,979,344 bytes maximum residency (219 sample(s))
and
   4451 MB total memory in use (0 MB lost due to fragmentation)

I could not find this information in the docs anywhere, but I may have missed it.

best,
Jur