Hi, I found that the compile time of GHC 7.10 against specific packages gets much longer than previous versions. Here is example: https://travis-ci.org/kazu-yamamoto/iproute/builds/77427248 On my local MacBook Air, I see the same phenomena: GHC 7.8: cabal build 8.81s user 0.94s system 103% cpu 9.430 total GHC 7.10: cabal build 37.86s user 3.49s system 98% cpu 42.066 total Is this known regression? --Kazu
kazu no it's not expected to take "much longer". Can you make a ticket with a reproducible test case? Thanks! Simon | -----Original Message----- | From: ghc-devs [mailto:ghc-devs-bounces@haskell.org] On Behalf Of Kazu | Yamamoto | Sent: 27 August 2015 02:24 | To: ghc-devs@haskell.org | Subject: GHC 7.10 complie time regression | | Hi, | | I found that the compile time of GHC 7.10 against specific packages | gets much longer than previous versions. Here is example: | | https://travis-ci.org/kazu-yamamoto/iproute/builds/77427248 | | On my local MacBook Air, I see the same phenomena: | | GHC 7.8: cabal build 8.81s user 0.94s system 103% cpu 9.430 | total | GHC 7.10: cabal build 37.86s user 3.49s system 98% cpu 42.066 | total | | Is this known regression? | | --Kazu | _______________________________________________ | ghc-devs mailing list | ghc-devs@haskell.org | http://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-devs
Simon Peyton Jones wrote:
no it's not expected to take "much longer". Can you make a ticket with a reproducible test case?
An make sure you are using ghc 7.10.2 and not 7.10.1 because 7.10.2 had some signifcant fixes for these kinds of issues. Erik -- ---------------------------------------------------------------------- Erik de Castro Lopo http://www.mega-nerd.com/
Simon,
no it's not expected to take "much longer". Can you make a ticket with a reproducible test case?
OK. Now Filed: https://ghc.haskell.org/trac/ghc/ticket/10818 --Kazu
participants (3)
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Erik de Castro Lopo -
Kazu Yamamoto -
Simon Peyton Jones