287609 - lag and erratic cursor in textfields when there are animated gifs in view

Status: RESOLVED DUPLICATE of bug 272954

(Camino Graveyard :: General, defect)

Description

[Tom Vogel]

User-Agent:       Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.8b2) Gecko/20050323 Camino/0.8+
Build Identifier: Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.8b2) Gecko/20050323 Camino/0.8+

If the window is scaled so that the animated gifs are not shown, the CPU usage
goes back to normal levels and the lag disappears. The cursor jumps so
erratically with animated gifs in the view that it actually shows up through
other tabs sometimes. This does not even require large animated gifs as I have
put in my test case; a simple small animated emoticon like in phpBB forums will
slow it to a crawl.

Reproducible: Always

Steps to Reproduce:
1. go to a page with animated gif and a text field
2. select text field
3. scream in agony

Actual Results:  
CPU usage is around ~50% with textfield selected, spikes to ~90% while typing
with gifs in view, drops to ~10% when the window is resized to block the gifs,
or ~30% when the textfield is deselected with the gifs in view.

Comment 1

[Mike Pinkerton (not reading bugmail)]

dupe

Comment 2

[Asher]

(In reply to comment #1)
> dupe

Please be more descriptive (ie, which is this the dupe for?)

It may be a dupe of Bug 54153.

Comment 3

[L. H.]

That is to tell others to find the dupe. See DUPEME status whiteboard.

*** This bug has been marked as a duplicate of 280982 ***

Comment 4

[Simon Fraser [no longer active]]

This is actually a dup of bug 272954.

Comment 5

[Simon Fraser [no longer active]]

*** This bug has been marked as a duplicate of 272954 ***