[GHC] #1623: ghci: 20 wakeups per second

[GHC]

#1623: ghci: 20 wakeups per second
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        Reporter:  igloo             |                Owner:  simonmar
            Type:  bug               |               Status:  closed
        Priority:  normal            |            Milestone:  6.8.1
       Component:  Runtime System    |              Version:  6.6.1
      Resolution:  fixed             |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Changes (by bgamari):

 * cc: simonmar (added)
 * failure:   => None/Unknown


Comment:

 This is still broken in the `USE_PTHREAD_FOR_ITIMER` codepath. See #11965.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/1623#comment:9>
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