Bug Tracker

#3819 closed bug (worksforme)

Opened January 09, 2009 11:42PM UTC

Closed January 10, 2009 12:42AM UTC

jQuery 1.3b2 selector engine *much* slower than 1.3b1 (FF 3.0.5)

Reported by: doctyper Owned by: john
Priority: major Milestone: 1.3
Component: selector Version: 1.2.6
Keywords: Cc:
Blocked by: Blocking:
Description

This bug is only found under Firefox 3.0.5. FF 3.1 / Safari 3 work fine.

There is an extremely noticeable difference in jQuery's selector engine running FF 3.0.5. Calling jQuery takes up to 12x (!) the time between the two versions. I've set up a test case for you to view. The test uses Firebug to log the time:

Using 1.3b1:

http://doctyper.com/stuff/jquery/1.3b1.html

Using 1.3b2:

http://doctyper.com/stuff/jquery/1.3b2.html

Attachments (2)
  • Picture 1.png (147.1 KB) - added by doctyper January 09, 2009 11:43PM UTC.

    FF 3.0.5 Running 1.3b1

  • Picture 2.png (147.8 KB) - added by doctyper January 09, 2009 11:43PM UTC.

    FF 3.0.5 Running 1.3b2

Change History (1)

Changed January 10, 2009 12:42AM UTC by john comment:1

resolution: → worksforme
status: new → closed

I really can't confirm this - I keep trying but can't reproduce the massive 10x spike shown here.

Just FYI - this test ends up testing a lot more than just selectors - it also tests the performance of .hide() and .show().