Why is my https getter in Haskell so slow compared to curl? -


i'm writing simple https getter code in haskell. after response save file compression. version slow compared curl , gzip combination. how can make faster curl? details below.

haskell code (fetcher.hs):

import control.lens import qualified codec.compression.gzip gzip import qualified data.bytestring.lazy bl import network.wreq  writeuribodytofile :: filepath -> string -> io() writeuribodytofile filepath uri =   response <- uri   let body = (response ^. responsebody)   bl.writefile filepath (gzip.compress body)  main :: io () main = writeuribodytofile "out.html.gz" "https://www.sahibinden.com/ilan/vasita-otomobil-seat-hatasiz-boyasiz-tramersiz-dsg-leon-469484363/detay/"

haskell result:

$ ghc -o fetcher fetcher.hs $ time ./fetcher   real    0m9.240s user    0m8.840s sys     0m0.232s

curl result:

$ time curl "https://www.sahibinden.com/ilan/vasita-otomobil-seat-hatasiz-boyasiz-tramersiz-dsg-leon-469484363/detay/" | gzip > out.html.gz   % total    % received % xferd  average speed   time    time     time  current                                  dload  upload   total   spent    left  speed 100  102k  100  102k    0     0   331k      0 --:--:-- --:--:-- --:--:--  332k  real    0m0.524s user    0m0.156s sys     0m0.040s

edit: tried http-conduit package, nothing changed.

import qualified data.bytestring.lazy bl import           network.http.simple  main :: io () main =     response <- httplbs "https://www.sahibinden.com/ilan/vasita-otomobil-seat-hatasiz-boyasiz-tramersiz-dsg-leon-469484363/detay/"     bl.writefile "outnew.html" $ getresponsebody response

edit2: checked connection tcpdump, , there no connection issue.

edit3: ghci, version 7.10.3

edit4: compile command ghc -o fetcher fetcher.hs


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