scala - How can I speed up scalaz-stream text processing? -


how can speed following scalaz-stream code? takes 5 minutes process 70mb of text, doing quite wrong, since plain scala equivalent take few seconds.

(follow-up another question)

  val converter2: task[unit] = {     val docsep = "~~~"     io.linesr("myinput.txt")       .flatmap(line => { val words = line.split(" ");           if (words.length==0 || words(0)!=docsep) process(line)           else process(docsep, words.tail.mkstring(" ")) })       .split(_ == docsep)       .filter(_ != vector())       .map(lines => lines.head + ": " + lines.tail.mkstring(" "))       .intersperse("\n")       .pipe(text.utf8encode)       .to(io.filechunkw("correctbutslowoutput.txt"))       .run   }

i think use 1 of process1 chunk methods chunk. if want lot parallel processing on merge of lines output format, decide if ordered output important , use channel combined merge or tee. make reusable. because doing small amount of processing swamped overhead have work harder make unit of work large enough not swamped.


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