On Wed, Nov 10, 2004 at 10:07:46AM +0000, Malcolm Wallace wrote: > "Simon Marlow" <[EMAIL PROTECTED]> writes: > > > On 09 November 2004 17:04, Duncan Coutts wrote: > > > > >> Are you using BinMem, or BinIO? > > > > > > BinIO > > > > Aaaaah. BinIO is going to be a lot slower than BinMem, because it does > > an hPutChar for each character, whereas BinMem just writes into an > > array. I never really optimised the BinIO path, because we use BinMem > > exclusively in GHC. >
I have also done a port of the binary library to ghc6 as part of my ginsu project and done some work on improving its efficiency, in addition I have updated DrIFT such that it can derive both the old bitwise nhc style binary as well as the new ghc style byte based binary. (the byte based version which I use in ginsu is signifigantly faster). The code can be gotten from ginsu in http://repetae.net/computer/ginsu/ I also have a much improved PackedString based on raw UTF8 in memory with optimized unboxed folding routines which is designed to be very fast to serialize with Binary. In ginsu, a switch from String -> PackedString changed my memory footprint from 200megs to 10. quite a nice improvement. John -- John Meacham - ârepetae.netâjohnâ _______________________________________________ Glasgow-haskell-users mailing list [EMAIL PROTECTED] http://www.haskell.org/mailman/listinfo/glasgow-haskell-users