Firefox 3.6 Performance: Startup and Snappiness Improvements

Firefox 3.6 was released today! For me, the most important changes in this release are the performance and stability improvements. On Mac especially, there are some big improvements in startup time, yielding up to 30% faster startup generally. And on both Mac and Windows, we fixed some pathologically bad startup scenarios.

The list of bugs fixed that specifically affect startup time is here, however a few should be called out individually:

The full list of bugs fixed in Firefox 3.6 with the “perf” keyword is here. These range from improvements to web page loading times, general UI responsiveness, and improvements to specific UI actions such as searching History and Bookmarks:

And all of this is just a taste of what’s to come: Over 60% of the bugs fixed as part of our focus on startup performance have landed on trunk, but didn’t make it in time for the 3.6 release. You can follow along on the wiki page for the startup project, and here on my blog, where I post status updates every Friday.


17 Comments on “Firefox 3.6 Performance: Startup and Snappiness Improvements”

  1. […] in the Firefox 3.6 UI have gotten faster. For example startup time has been improved thanks to various optimizations. My personal favorite is the awesomebar is now asynchronous, if you don’t know what that […]

  2. max ogden says:

    great job! really excited for the other 60% to see the light of day!

    on my late 2007 MBP with a pretty old hard drive, ff36 does a warm start up in ~2 seconds. not too shabby! i remember the days when ff took ~6+ seconds (mere months ago)

  3. Brian King says:

    Amazing work, keep it up!

  4. Sean Hogan says:

    It’s unusable for me on OSX Tiger (10.4.11).
    Random strageness with click and mouseover, even in the chrome.

  5. […] Des performances améliorées, notamment en ce qui concerne le moteur javascript et une meilleure stabilitée suite à la correction de nombreux bugs. […]

  6. […] January 22, 2010 A good week: Firefox 3.6 was released, and I’ve gotten a lot of feedback from friends and colleagues that startup has improved, and that it’s snappier than ever. Yesterday I blogged a roundup of the performance improvements in Firefox 3.6. […]

  7. […] that Mozilla dubs the “Awesomebar” — on all versions have resulted in what the company claimed were “massive improvements in [user interface] responsiveness when typing in the location […]

  8. […] address bar that Mozilla dubs the “Awesomebar” — on all versions have resulted in what the company claimed were “massive improvements in [user interface] responsiveness when typing in the location […]

  9. […] Untuk versi komputer Mac, misalnya, browser memulai tampilan awal lebih cepat 30% dari Firefox 3.5. Perusahaan juga mengklaim telah membuat perubahan dan peningkatan masif pada responsivitas antarmuka-pengguna saat mengetik di […]

  10. […] that Mozilla dubs the “Awesomebar” — on all versions have resulted in what the company claimed were “massive improvements in [user interface] responsiveness when typing in the location […]

  11. […] that Mozilla dubs the “Awesomebar” — on all versions have resulted in what the company claimed were “massive improvements in [user interface] responsiveness when typing in the location […]

  12. nanook says:

    Have the printing problems been fixed with 3.6? This was a big issue for many users at v3.0 and above. Any number of problems, including printing only headers and footers but no page content, etc. For many of us, the workaround was to copy the URL to IE and print from there. Not a very integrated approach. Comments anyone?

  13. […] Fire­fox 3.6 per­form­ance improve­ments. […]

  14. FireFox browser is better
    Thank you

  15. Chrome is much faster, but firefox had it’s moments.
    Lots of good plugins make it great.

  16. Shonun says:

    I don’t notice much difference. Running XP-SP3 on P4/3.0ghz, 4gb RAM. Still 6 to 8 second start up (occasionally more). This is well after allowing Windows to fully boot, load drivers, etc. Clean PC, very little running in background, no active torrent client, no music sharing, no online backup, etc. I’m aware that sometimes people try to launch FF as soon as the desktop is up, but Windows of course still has to muck around for awhile before it’s ready for biz. In short, Mozilla still has plenty to fix in FF. Having a brutally fast PC helps, but is no substitute for coding issues.
    Chrome is faster, but I regard Chrome as the black hole of the Borg – Google’s bait to collect surfing habits for refining its own search engine, and perhaps keeping other records. Yeah, I could just be a conspiracy nut, but given Google’s other less-friendly public stances, it’s reasonable to be suspicious of them.


Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s