Re: [commit: ghc] master: Fix a couple of inaccurate stack checks (3bebf3c)

Hi, Am Donnerstag, den 06.11.2014, 13:44 +0100 schrieb Joachim Breitner:

Am Mittwoch, den 05.11.2014, 18:15 +0000 schrieb git@git.haskell.org:

...

commit 3bebf3c2d92e6defc6d17ffa237cc4a9cad71dcf Author: Simon Marlow Date: Tue Nov 4 21:31:00 2014 +0000

Fix a couple of inaccurate stack checks

I observe a 5% runtime performance regression in nofib’s "integer" benchmark: http://ghcspeed-nomeata.rhcloud.com/timeline/?exe=2&base=2%2B68&ben=nofib%2Ftime%2Finteger&env=2&revs=50&equid=on

(The graph looks weird because codespeed doesn’t get the order of commits right.)

Expected? Or worth looking into?

I’m no longer sure its caused by this commit. That test suddenly behaves rather erratic. Maybe it was something else that pushed it close to some GC run threshold. *shrug* Greetings, Joachim -- Joachim Breitner e-Mail: mail@joachim-breitner.de Homepage: http://www.joachim-breitner.de Jabber-ID: nomeata@joachim-breitner.de