[GHC] #728: switch to compacting collection when swapping occurs

[GHC]

#728: switch to compacting collection when swapping occurs
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    Reporter:  simonmar          |        Owner:                            
        Type:  feature request   |       Status:  new                       
    Priority:  normal            |    Milestone:  _|_                       
   Component:  Runtime System    |      Version:  6.4.1                     
    Keywords:  compacting        |   Difficulty:  Moderate (less than a day)
          Os:  Unknown/Multiple  |     Testcase:  N/A                       
Architecture:  Unknown/Multiple  |      Failure:  Runtime performance bug   
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Changes (by lelf):

 * cc: anton.nik@… (added)


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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/728#comment:11>
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