[GHC] #14257: Heap profiling with ghc and hp2ps and strict function application ($!) gives samples out of sequence (regression)

[GHC]

#14257: Heap profiling with ghc and hp2ps and strict function application ($!)
gives samples out of sequence (regression)
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        Reporter:  carlostome        |                Owner:  bgamari
            Type:  bug               |               Status:  new
        Priority:  high              |            Milestone:  8.4.1
       Component:  Runtime System    |              Version:  8.2.1
      Resolution:                    |             Keywords:  profiler
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #14006, #11645    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by duog):

 Having done some more investigation, my understanding has improved. The
 diff linked in comment:8 is quite wrong.

 `heapCensus` should be called during a garbage collection, and it's time
 should be included in GC stats. It's parameter should be the start time of
 the current gc.

 I now believe the cause of this is a bug in how gc times are accumulated,
 see Phab:4184, which does fix this issue.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14257#comment:11>
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