[Haskell-cafe] Re: Efficient signal processing

Donald Bruce Stewart dons at cse.unsw.edu.au
Sun Jun 17 00:50:28 EDT 2007

> Henning Thielemann wrote:
> >The program is compiled with GHC-6.4 and option -O2, CPU clock 1.7 GHz.
> ByteString is much faster with GHC 6.6, IIRC.  We optimised the 
> representation of ForeignPtr, and ByteString takes advantage of that.  I 
> recommend upgrading.

Yes, a 2x speedup isn't uncommon. ByteString is even faster with the GHC
head, branch, given the cranked up rules and constructor specialisation.

-- Don

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