[GHC] #14445: GC timing stats (e.g. mutator_elapsed_ns) decrease over time

[GHC]

#14445: GC timing stats (e.g. mutator_elapsed_ns) decrease over time
-------------------------------------+-------------------------------------
        Reporter:  harendra          |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Runtime System    |              Version:  8.2.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Debugging         |  Unknown/Multiple
  information is incorrect           |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #14257, #14006,   |  Differential Rev(s):
  #11645                             |
       Wiki Page:                    |
-------------------------------------+-------------------------------------

Comment (by duog):

 I observed this bug, then applied Phab:D4184, and it seems to fix it.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14445#comment:2>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler