[Haskell-cafe] Concurrency and ghc 6.12.3

Gregory Collins greg at gregorycollins.net
Thu Nov 4 19:23:59 EDT 2010

Ketil Malde <ketil at malde.org> writes:

> I guess I should try this with GHC7, but is there reason to believe it
> will perform better?

Yes -- there are huge GC and inlining improvements. In our (unreleased)
new benchmarks, the Snap webserver is seeing 20-30% improvements out of
the box.

One thing you could try for 6.12 is turning parallel GC off -- we've
found horrible scaling behaviour if you don't. The RTS flag for that is

Gregory Collins <greg at gregorycollins.net>

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