[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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Comment (by Ben Gamari <ben@…>):

 In [changeset:"999c464da36e925bd4ffea34c94d3a7b3ab0135c/ghc" 999c464/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="999c464da36e925bd4ffea34c94d3a7b3ab0135c"
 rts/itimer/pthread: Stop timer when ticker is stopped

 This reworks the pthread-based itimer implementation to disarm the timer
 when events aren't needed. Thanks to hsyl20 for the nice design.

 Test Plan: Validate

 Reviewers: hsyl20, simonmar, austin

 Reviewed By: simonmar

 Subscribers: thomie

 Differential Revision: https://phabricator.haskell.org/D2131

 GHC Trac Issues: #1623, #11965
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/1623#comment:10>
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