On Sat, Feb 14, 2009 at 2:45 PM, drago01 <drago01@xxxxxxxxx> wrote: > On Fri, Feb 13, 2009 at 5:45 PM, Adam Pribyl <pribyl@xxxxxxxxxxx> wrote: >> Is there anything we can do to improve the Fedora picture? >> http://www.tuxradar.com/content/browser-benchmarks-2-even-wine-beats-linux-firefox >> >> Adam Pribyl > > The windows firefox build is compilied with PGO (profile guided > optimization) which should improve JS perfomance by ~11%, see > http://gemal.dk/blog/2008/03/04/firefox_3_with_profileguided_optimization_speeding_ticket/ You can -fprofile-use with GCC, but it makes the build process tricky— especially with an X11 app. (A pure batch processing CLI app could easily have a scripted profile generation process). In my own (limited) experience 11% would be well on the high end of what you can get from GCC's profile driven optimizations, but clearly the benefits can be considerable and it can also result in smaller binaries (avoiding unprofitable inlining). Especially since FF 3.1 has a rewritten JS engine, the bigger question is "Should more of Fedora be built using profile driven optimizations?". Considering that you're looking at tripping the build time and making compilation less deterministic, I don't know if thats an easy decision. -- fedora-test-list mailing list fedora-test-list@xxxxxxxxxx To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-test-list
