From: haskell-cafe-bounces@haskell.org [mailto:haskell-cafe-bounces@haskell.org] On Behalf Of Vasyl Pasternak
Yesterday I played with iteratee package, and wanted to check its performance. I tried to count lines in a file, as Oleg in his famous lazy_vs_correct[1] article. The results somewhat disappointed me.
The statistics and code follows, but shortly: lazy bytestring is the fastest, iteratee with bytestrings 10 times slower than lazy bytestring. When comparing lazy string and iteratee with [Char], than their results were close, but lazy string reading uses less memory and was a bit faster (20%).
I performed test on 250Mb file with 5 millions lines.
Not tuning advice, but still... If you have the time, could you also try Peter Simon's old block-io proposal? http://cryp.to/blockio/fast-io.html I'm curious to see how it compares to bytestring. I can't see why the iteratee approach can't have similar performance. Alistair ***************************************************************** Confidentiality Note: The information contained in this message, and any attachments, may contain confidential and/or privileged material. It is intended solely for the person(s) or entity to which it is addressed. Any review, retransmission, dissemination, or taking of any action in reliance upon this information by persons or entities other than the intended recipient(s) is prohibited. If you received this in error, please contact the sender and delete the material from any computer. *****************************************************************