Hello David, Tuesday, March 18, 2008, 10:15:48 PM, you wrote:
Incidentally, you'll probably find that for large files, using mmap on Windows is a huge loser when compared with lazy bytestrings. As far as I understand, on Windows when a file is mmapped, its entire contents are immediately loaded into memory, so if you mmap a file that is larger than your memory, you pay a huge penalty on Windows.
it's definitely not true, at least for my own experiments. although i never tried o map entire file to memory, but used only small window into file. mmaping for windows and linux implemented in http://www.haskell.org/library/StreamsBeta.tar.gz where it used just to make i/o faster. at least i tried but found undesirable effects, but not one you have mentioned -- Best regards, Bulat mailto:Bulat.Ziganshin@gmail.com