On Tue, Apr 26, 2011 at 6:32 PM, John Millikin <jmilli...@gmail.com> wrote:
> On Tuesday, April 26, 2011 7:19:25 AM UTC-7, John Lato wrote: > >> I'd be interested to see the results of a shootout between iteratee and >> enumerator. I would expect them to be basically equivalent most of the >> time, with maybe two or three operations with a small (but consistent) >> difference one way or the other. >> > > I did some basic benchmarks a few months ago; if I remember correctly, it > depends almost entirely on how well GHC optimizes CPS on a particular > platform. The relative performace was very similar to Lennart Kolmodin's > benchmarks of "binary" at < > http://lennartkolmodin.blogspot.com/2011/02/binary-by-numbers.html >. In > particular, CPS/"iteratee" is faster on 32-bit, while state > passing/"enumerator" is faster on 64-bit. > > This difference exists for almost all operations, and was on the order of > 5-15% depending on the shape of the input. I couldn't figure out a good way > to benchmark the libraries themselves when there's so much noise from the > compiler. > That figures. Thanks for sharing this. John L.
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