[Bug 223238] [NEW] Extremely slow Ajax/Javascript performance in Firefox 3 for Linux

[phinn]

Public bug reported:

Binary package hint: firefox-3.0

With Ubuntu 8.04

Firefox 3.0 has extremely slow Ajax/Javascript performance (I'm not sure
exactly what).

#1  Gmail scrolls very slowly (compare this by switching gmail to HTML
version at the bottom of inbox)

#2 Javascript images open/close/transition extremely slow
        examples:
             http://www.shacknews.com/      (images near the top of page, when transitioning, bring FF3.0 to its knees)
             http://www.worldofwarcraft.com/downloads/ssotd/#latest            (images opening and switching to next one)
             http://www.transmissionbt.com/screenshots.php          (opening and closing images are very choppy)

      There are many more, those are just a few.

I have both enabled and disabled Compiz but the problem is still there.
I am not a web developer and can't pinpoint exactly what sort of code is
causing the extreme slowness but I have tested it on multiple machines
to make sure.  I have compared it to my Windows XP dual boot box and the
difference is night and day so it is definitely a Linux issue.  Also on
a Mac OS 10.4 machine its noticeably faster.

This bug:   https://bugs.launchpad.net/bugs/217580
Is similar but only deals with Gmail, it is now known to be widespread issue.  With performance this slow Firefox 3.0 beta should never have been the default browser. Unless its just the few machines I've used of course.

ProblemType: Bug
Architecture: i386
Date: Sun Apr 27 15:33:59 2008
DistroRelease: Ubuntu 8.04
NonfreeKernelModules: nvidia
Package: firefox-3.0 3.0~b5+nobinonly-0ubuntu3
PackageArchitecture: i386
ProcEnviron:
 PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: firefox-3.0
Uname: Linux 2.6.24-16-generic i686

** Affects: firefox-3.0 (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug

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Extremely slow Ajax/Javascript performance in Firefox 3 for Linux
https://bugs.launchpad.net/bugs/223238
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