Re: [Haskell-cafe] How can I improve the pipes's performance with a huge file?

On Fri, Nov 14, 2014 at 05:43:15PM +0800, zhangjun.julian wrote:

But when I test with whole file (40M rows), it take more than 20 minutes and not finished yet. It take more than 9G memorys, and the disk is also busy all time.

import qualified Data.Map as DM

At the very least you should be using import qualified Data.Map.Strict as DM