On Sun, Sep 26, 2010 at 09:16:12AM -0400, Simon Marlow wrote:
There's something else we need to resolve. Earlier I reported that GHC itself allocates more with the dons/tibbe containers patches - the issue seems to be worse with the current patches, to the extent that two of the GHC performance regression tests fail (T1969 and T3294).
in T1969: containers-0.3, allocations: 246,402,492 containers + dons/tibbe/milan, allocations: 283,370,180 (+15%)
in T3294: containers-0.3, allocations: 832,307,880 containers + dons/tibbe/milan, allocations: 950,107,000 (+14%)
We'll need to isolate exactly which change(s) causes the problem and track down the cause.
I've filed http://hackage.haskell.org/trac/ghc/ticket/4342 Thanks Ian