[GHC] #9771: Excessive memory usage compiling T3064

[GHC]

#9771: Excessive memory usage compiling T3064
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              Reporter:  hvr         |            Owner:  simonpj
                  Type:  bug         |           Status:  new
              Priority:  highest     |        Milestone:  7.10.1
             Component:  Compiler    |          Version:  7.9
            Resolution:              |         Keywords:
      Operating System:              |     Architecture:  Unknown/Multiple
  Unknown/Multiple                   |       Difficulty:  Unknown
       Type of failure:  Compile-    |       Blocked By:
  time performance bug               |  Related Tickets:
             Test Case:              |
              Blocking:              |
Differential Revisions:              |
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Comment (by hvr):

 Replying to [comment:2 simonpj]:
 > There really ought to be a way to ensure that tests don't go AWOL and
 eat all resources, though.

 Well, one could either pass some +RTS options to ghc to limit its heap via
 `-M<size>` (which otoh distorts GHC's reported memory stats, and relies on
 the RTS to correctly enforce that limit), or (at least on Linux, so I'm
 not sure what to do for Windows buildbots) you can use `ulimit` to impose
 a memory allocation limit for a process (and its children).

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9771#comment:3>
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