[GHC] #1334: apparent memory leak in --make mode (compiling base library during building ghc)

[GHC]

#1334: apparent memory leak in --make mode (compiling base library during building
ghc)
---------------------------+------------------------------------------------
  Reporter:  Isaac Dupree  |          Owner:         
      Type:  bug           |         Status:  new    
  Priority:  normal        |      Milestone:         
 Component:  Compiler      |        Version:  6.7    
  Severity:  normal        |       Keywords:         
Difficulty:  Unknown       |             Os:  Unknown
  Testcase:                |   Architecture:  Unknown
---------------------------+------------------------------------------------
I've noticed that my memory usage slowly goes up and up, and not down
 until the `ghc-inplace ... --make ... -O ...` of all base at once
 finishes.  There is not such a memory reduction between the individual
 file compilations within the --make.  By the end it's using around 200-400
 MB of memory.  Compiling files individually doesn't seem to have such a
 large memory occupancy.  I could probably gather more details/sureness if
 it would be useful... for now I am just noting this effect. (I think when
 I built jhc, which is built using ghc --make, it also ended up using large
 amounts of memory.) Is the high memory usage just a symptom of importing
 lots of modules even with separate invocations of ghc, or is ghc
 remembering more than it needs to in --make mode, or does remembering all
 the .hi contents at once, of all modules that have been compiled and will
 be needed sometime in future compilation, take that much memory?

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1334>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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