Hrmm. I wonder if that is in part caused by the inefficient use of sequence in
https://github.com/ghc/nofib/blob/master/spectral/fibheaps/Main.lhs#L234 If that sequence . map is swapped for a traverse, what happens? -Edward On Mon, Sep 29, 2014 at 3:44 AM, Joachim Breitner <m...@joachim-breitner.de> wrote: > Hi, > > > Am Samstag, den 27.09.2014, 21:07 +0000 schrieb g...@git.haskell.org: > > commit f636faa7b2b7fc1d0663f994ad08f365d39a746d > > Author: Herbert Valerio Riedel <h...@gnu.org> > > Date: Sat Sep 27 22:55:19 2014 +0200 > > > > Set default-impl of `mapM`/`sequence` methods to > `traverse`/`sequenceA` > > > > This is made possible by the AMP, as we don't need the `WrappedMonad` > > helper for that anymore. > > according to > > http://ghcspeed-nomeata.rhcloud.com/changes/?rev=f636faa7b2b7fc1d0663f994ad08f365d39a746d&exe=2&env=nomeata%27s%20buildbot > this has caused a 11% regression in fibheaps allocation: > > http://ghcspeed-nomeata.rhcloud.com/timeline/?ben=nofib/allocs/fibheaps&env=1#/?exe=2&base=2+68&ben=nofib/allocs/fibheaps&env=1&revs=50&equid=on > > Greetings, > Joachim > > -- > Joachim “nomeata” Breitner > m...@joachim-breitner.de • http://www.joachim-breitner.de/ > Jabber: nome...@joachim-breitner.de • GPG-Key: 0xF0FBF51F > Debian Developer: nome...@debian.org > > > _______________________________________________ > ghc-devs mailing list > ghc-devs@haskell.org > http://www.haskell.org/mailman/listinfo/ghc-devs > >
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