[GHC] #7602: Threaded RTS performing badly on recent OS X (10.8?)

[GHC]

#7602: Threaded RTS performing badly on recent OS X (10.8?)
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              Reporter:  simonmar    |            Owner:  thoughtpolice
                  Type:  bug         |           Status:  new
              Priority:  high        |        Milestone:  7.10.1
             Component:  Runtime     |          Version:
  System                             |         Keywords:  thread-local
            Resolution:              |  state, TLS clang
      Operating System:  MacOS X     |     Architecture:  x86_64 (amd64)
       Type of failure:  Runtime     |       Difficulty:  Unknown
  performance bug                    |       Blocked By:  7678
             Test Case:              |  Related Tickets:
              Blocking:              |
Differential Revisions:              |
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Comment (by George):

 Was hoping to have this in the next Haskell Platform. A few months back
 the patch was coming soon. I assume there were problems. Are we still
 confident we know how to fix this?

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7602#comment:48>
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