小编Noe*_*wan的帖子

对以下内容进行基准测试：

#!/usr/bin/env stack
-- stack --resolver lts-16.2 script --package async --package criterion

import           Control.Concurrent.Async (async, replicateConcurrently_)
import           Control.Monad            (replicateM_, void)
import           Criterion.Main

main :: IO ()
main = defaultMain [
    bgroup "tests" [ bench "sync" $ nfIO syncTest
                   , bench "async" $ nfIO asyncTest
                   ]
    ]

syncTest :: IO ()
syncTest = replicateM_ 100000 dummy

asyncTest :: IO ()
asyncTest = replicateConcurrently_ 100000 dummy

dummy :: IO Int
dummy = return $ fib 10000000000

fib :: Int -> Int
fib …