[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:  simonmar     
        Type:  bug             |       Status:  new          
    Priority:  high            |    Milestone:  6.12.2       
   Component:  Runtime System  |      Version:  6.12.1       
    Keywords:                  |   Difficulty:               
          Os:  Linux           |     Testcase:               
Architecture:  x86_64 (amd64)  |      Failure:  Runtime crash
-------------------------------+--------------------------------------------

Comment(by bos):

 Thanks for working on this, Simon. It'll be a few days before I have a
 chance to look at the results, at the very least.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3758#comment:16>
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