[GHC] #5991: regression: huge number of wakeups in xmonad

[GHC]

#5991: regression: huge number of wakeups in xmonad
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    Reporter:  dmwit             |       Owner:  simonmar               
        Type:  bug               |      Status:  merge                  
    Priority:  high              |   Milestone:  7.4.2                  
   Component:  Runtime System    |     Version:  7.4.1                  
    Keywords:                    |          Os:  Linux                  
Architecture:  Unknown/Multiple  |     Failure:  Runtime performance bug
  Difficulty:  Unknown           |    Testcase:                         
   Blockedby:                    |    Blocking:                         
     Related:                    |  
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Changes (by simonmar):

  * status:  new => merge


Comment:

 Please also merge 9d26519c20194abc3832578a55fbe31327519eeb, as it fixes a
 regression in `threadDelay` in the non-threaded RTS that I noticed while
 investigating this bug.

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5991#comment:6>
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