[GHC] #9539: TQueue can lead to thread starvation

[GHC]

#9539: TQueue can lead to thread starvation
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        Reporter:  jwlato            |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Core Libraries    |              Version:  7.8.2
      Resolution:                    |             Keywords:  stm
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 winter):

 > So it fixes the problem in its original context, but not in any larger
 settings. Since the whole point of STM is to be "compositional", I don't
 think this can honestly be called a fix.

 That will be another problem to tackle IMHO, since any long transactions
 rise the risk of starvation, and we really should educate user to be
 cautious about this!

 As for your realtime queue proposal, let's wait for some realworld
 benchmark results before taking further actions. I'm not opposite to a
 good realtime queue, it's just need some thoroughly evaluation before
 merged into standard library IMHO ；）

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9539#comment:23>
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