Where can I get ghc-6.10? I cannot see it at haskell.org website.
On 2008-10-29, Don Stewart <[EMAIL PROTECTED]> wrote: > jwlato: >> Hello, >> >> I was experimenting with using ghc-6.10.0.20081007 on a project, and >> it seems that binary-0.4.3.1 has markedly worse performance in certain >> cases. With the following simple test: >> >> > import qualified Data.ByteString.Lazy as L >> > import Data.Binary >> > import Data.Binary.Get >> > import Control.Monad >> > >> > main :: IO () >> > main = do >> > b <- L.readFile "some_binary_file" >> > putStrLn $ show $ runGet getter b >> >> > getter :: Get [Word16] >> > getter = replicateM 1000000 getWord16le >> >> running this program compiled with ghc-6.10 takes about 4 times as >> long (and consumes much more memory) as when compiled with ghc-6.8.3. >> The extra time appears to be proportional to the number of elements >> processed in the Get. Running the programs with -hT shows a clear >> memory difference, which I think is the source of the problem. I've >> placed pdfs of that output at https://webspace.utexas.edu/latojw/data/ >> >> The difference seems to manifest itself only when the elements are >> actually processed; changing "show $ runGet " to "show $ length $ >> runGet " is slightly faster in 6.10. >> >> I was working on an Intel Mac with OS 10.4, binary-0.4.3.1, and >> bytestring-0.9.1.4. Can anyone confirm this, or suggest what might be >> the difference? >> > > Is this the sole test case? > > I can investigate. Though perhaps using a newer GHC release candidate is > also a good idea. > > -- Don > _______________________________________________ > Haskell-Cafe mailing list > Haskell-Cafe@haskell.org > http://www.haskell.org/mailman/listinfo/haskell-cafe > _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe