#3655: Performance regression relative to 6.10
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Reporter: simonmar | Owner: simonpj
Type: bug | Status: closed
Priority: high | Milestone: 6.12.2
Component: Compiler | Version: 6.10.4
Resolution: fixed | Keywords:
Difficulty: Unknown | Os: Unknown/Multiple
Testcase: | Architecture: Unknown/Multiple
Failure: Runtime performance bug |
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Changes (by simonpj):
* status: new => closed
* resolution: => fixed
Comment:
OK, it seems ok in the HEAD, and I'm disinclined to follow it up further:
{{{
Time Allocation
6.10.2 9.27s 6.5G
HEAD 8.56 3.8G
}}}
So HEAD allocates a lot less! Both spend 30% of time in GC.
For HEAD I had to add `+RTS -K9m`, whereas 6.10.2 worked with `-K8m` (but
not `-K7m`), so stack space seem to have increased a bit.
Simon
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3655#comment:5>
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