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#1802 closed bug (fixed)
Opened October 15, 2007 04:39AM UTC
Closed April 28, 2008 09:15PM UTC
Last modified October 14, 2008 10:32AM UTC
"mousemove" consumes lots of CPU time in Firefox
| Reported by: | aza | Owned by: | |
|---|---|---|---|
| Priority: | major | Milestone: | 1.2.4 |
| Component: | event | Version: | 1.2.1 |
| Keywords: | Cc: | ||
| Blocked by: | Blocking: |
Description
Go to the the following page:
http://docs.jquery.com/Tutorials:Mouse_Position
It has a global "mousemove" event. Move the mouse back and forth on the page while watching the CPU consumption of Firefox -- it will shoot up to near 100% consumption. This behavior occurs on any page that "mousemove" is used. The same page in Safari or IE does not exhibit the unwanted behavior.
At least on my system, this causes the mouse to jump around and the browser to stop being responsive.
I am using Firefox 2.0.0.7
I am only seeing 10-15% cpu usage in FF 2.0.0.9 when moving the mouse. Intel C2D 2.16
Can anyone else verify the issue? This seems minor at best to me, but could be affecting slower systems. Need additional review.