Chris - thanks for your efforts on this. I am a little surprised to hear that the benchmarks show negligible benefit of turning on PGO in most tests, given what I have read previously in this bug and in the Mozilla bug reports. However I am not an expert so I guess it is possible. I just have one question - did you also build with -O3 as per comment #137?
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to firefox in Ubuntu. https://bugs.launchpad.net/bugs/213708 Title: Please compile Firefox with PGO optimizations Status in XUL + XPCOM application runner: Fix Released Status in “firefox” package in Ubuntu: Triaged Status in “firefox” source package in Quantal: Won't Fix Status in “xulrunner” package in Debian: New Status in “firefox-3.0” package in openSUSE: New Bug description: Binary package hint: xulrunner-1.9 I've been using Arch Linux for the last 3 months. Now, I'm back on Ubuntu because I got tired of configuring. Configuring never ends. However, for Arch Linux, I made the best Firefox 3 package ( http://aur.archlinux.org/packages.php?ID=15184 ), which includes PGO optimizations ( http://developer.mozilla.org/en/docs /Building_with_Profile-Guided_Optimization ). The Windows version is PGO optimised. People will hate the Ubuntu version knowing that the Windows version is so much faster. The official mozilla nightlies are PGO optimised. This was a test I did on Arch Linux, which is compiled against i686: Firefox 3 Beta 3 on the left. Firefox 3 Beta 4 with Profile Guided Optimisations on the right: http://www.paste2.org/p/15666 This is what I got with this build https://bugs.launchpad.net/gutsy- backports/+bug/212468 http://tinyurl.com/6fv8aq 7 times slower. I'm not sure how much i686 helps. But, my i686 PGO was 3 times faster than my normal i686. There are no regressions. It just works. I've attached how it was compiled and the mozconfig. To manage notifications about this bug go to: https://bugs.launchpad.net/xulrunner/+bug/213708/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
