#3064: Very long compile times with type functions
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Reporter: simonpj | Owner: chak
Type: bug | Status: new
Priority: low | Milestone: 7.0.1
Component: Compiler (Type checker) | Version: 6.10.1
Keywords: | Testcase:
Blockedby: | Difficulty: Unknown
Os: Unknown/Multiple | Blocking:
Architecture: Unknown/Multiple | Failure: Compile-time
performance bug
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Comment(by CoreyOConnor):
Using ghc-stage2 version 6.13.20100913. Which, as I understand it, should
be using the new typechecker.
{{{
[cocon...@toast scratch]$ time ../inplace/bin/ghc-stage2 -c Bug2.hs
real 0m2.296s
user 0m2.245s
sys 0m0.049s
[cocon...@toast scratch]$ time ../inplace/bin/ghc-stage2 -c Bug2.hs
real 0m11.539s
user 0m11.391s
sys 0m0.143s
[cocon...@toast scratch]$ time ../inplace/bin/ghc-stage2 -c Bug2.hs
real 0m53.307s
user 0m52.859s
sys 0m0.438s
[cocon...@toast scratch]$ time ../inplace/bin/ghc-stage2 -c Bug2.hs
real 4m0.904s
user 3m59.552s
sys 0m1.308s
}}}
Memory usage appeared to remain constant over time.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3064#comment:8>
GHC <http://www.haskell.org/ghc/>
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