[GHC] #664: Heap profiler can report hundredths of a second as "3.100" (not "4.000")

#664: Heap profiler can report hundredths of a second as "3.100" (not "4.000")
--------------------------+-------------------------------------------------
    Reporter:  guest      |        Owner:         
        Type:  bug        |       Status:  new    
    Priority:  normal     |    Milestone:         
   Component:  Profiling  |      Version:  6.4    
    Severity:  normal     |     Keywords:         
          Os:  Unknown    |   Difficulty:  Unknown
Architecture:  Unknown    |  
--------------------------+-------------------------------------------------
When running "program +RTS -p -hc", I occasionally have problems with
 hp2ps because of "samples out of sequence".  This appears to be caused by
 erroneous reporting of hundredths of a second in the program.hp file.  An
 example:

 {{{
 BEGIN_SAMPLE 13.90
 (158)/mainMain.CAF      24
 (163)/replace/output/mainM...   600036
 (156)GC 12
 (169)/pairsMain.CAF     276
 (159)/output/mainMain.CAF       84
 (168)/replaceIubsMain.CAF       96
 (88)GHC.Handle.CAF      140
 (170)/replace/replaceIubsM...   632392
 END_SAMPLE 13.90
 '''BEGIN_SAMPLE 13.100'''
 (158)/mainMain.CAF      24
 (163)/replace/output/mainM...   600036
 (156)GC 12
 (169)/pairsMain.CAF     276
 (159)/output/mainMain.CAF       84
 (168)/replaceIubsMain.CAF       96
 (88)GHC.Handle.CAF      140
 (170)/replace/replaceIubsM...   633052
 '''END_SAMPLE 13.100'''
 BEGIN_SAMPLE 14.09
 (158)/mainMain.CAF      24
 (163)/replace/output/mainM...   600036
 (156)GC 12
 (169)/pairsMain.CAF     276
 (159)/output/mainMain.CAF       84
 (168)/replaceIubsMain.CAF       96
 (88)GHC.Handle.CAF      140
 (170)/replace/replaceIubsM...   633880
 END_SAMPLE 14.09
 }}}

 In the above example, 14 seconds is reported as 13.100 seconds.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/664>
GHC <http://www.haskell.org/ghc/>
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