[GHC] #3758: Huge regression in concurrent app performance and reliability under threaded runtime

[GHC]

#3758: Huge regression in concurrent app performance and reliability under
threaded runtime
-------------------------------+--------------------------------------------
    Reporter:  bos             |       Owner:               
        Type:  bug             |      Status:  new          
    Priority:  normal          |   Milestone:               
   Component:  Runtime System  |     Version:  6.12.1       
  Resolution:                  |    Keywords:               
          Os:  Linux           |    Testcase:               
Architecture:  x86_64 (amd64)  |     Failure:  Runtime crash
-------------------------------+--------------------------------------------
Changes (by bsdemon):

 * cc: 8mayday at gmail.com (added)

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3758#comment:2>
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