Hi, Am Mittwoch, dem 20.10.2021 um 22:28 +0200 schrieb Joachim Breitner:
nofib might be too specialized; I think “ghc compiling Cabal” is a good benchmark. I’ll do that eventually, if GHC’s CI doesn’t do that already for me (I’ll ask Ben what kind of infrastructure we have for that – doing it manually and correctly is tedious and error-prone), maybe tomorrow.
Thanks for Mortiz Angerman for giving me access to a quiet machine. Here my crude setup to measure the time it takes GHC to compiler Cabal: $ for branch in ghc ghc-single-method-eq; do echo $branch; cd $branch; for i in 1 2 3 4 5; do /run/current-system/sw/bin/time _build/stage1/bin/ghc -hidir tmp -odir tmp -fforce-recomp +RTS -t -ttmp/ghc.log -RTS -ilibraries/Cabal/Cabal/src -XNoPolyKinds Distribution.Simple -O2 -v0; done; cd ..; done ghc 128.67user 2.03system 2:10.60elapsed 128.92user 2.00system 2:10.76elapsed 129.36user 2.07system 2:11.30elapsed 128.83user 2.02system 2:10.71elapsed 128.76user 2.13system 2:10.71elapsed ghc-single-method-eq 128.14user 2.04system 2:10.02elapsed 128.14user 2.02system 2:10.00elapsed 127.68user 2.12system 2:09.64elapsed 128.10user 2.05system 2:10.02elapsed 129.23user 1.95system 2:11.05elapsed I guess that means no significant improvement… (Such measurements always leave me wondering if I draw the right conclusions, and my setup is good. I crave for some expertly-setup measurement system where I don't have to worry about that, and I simply get a result.) Cheers, Joachim -- Joachim Breitner mail@joachim-breitner.de http://www.joachim-breitner.de/