Explain +RTS -t/s/S output text

The user guide should explain the meaning of all this:

Main +RTS -p -s -xt -hc
1,372,408,024 bytes allocated in the heap
121,255,600 bytes copied during GC (scavenged)
  6,584,692 bytes copied during GC (not scavenged)
  2,768,896 bytes maximum residency (68 sample(s))

       2649 collections in generation 0 (  1.11s)
         68 collections in generation 1 (  0.49s)

          6 Mb total memory in use
  
  INIT  time    0.00s  (  0.00s elapsed)
  MUT   time    5.97s  (  6.63s elapsed)
  GC    time    1.60s  (  1.88s elapsed)
  RP    time    0.00s  (  0.00s elapsed)
  PROF  time    0.19s  (  0.20s elapsed)
  EXIT  time    0.00s  (  0.00s elapsed)
  Total time    7.76s  (  8.71s elapsed)
  
  %GC time      20.6%  (21.5% elapsed)
  
  Alloc rate    229,946,873 bytes per MUT second
  
  Productivity  76.9% of total user, 68.5% of total elapsed

Originally requested here: http://www.haskell.org/pipermail/haskell-cafe/2007-January/021350.html

Trac metadata

Trac field	Value
Version	6.8.3
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Documentation
Test case
Differential revisions
BlockedBy
Related
Blocking
CC
Operating system	Unknown
Architecture	Unknown