Closed Bug 423611 Opened 17 years ago Closed 17 years ago

Very slow rendering and scrolling

Categories

(Core :: Layout, defect)

Product:
Core
Component:
Layout
Type:
defect
Priority:
Not set
Severity:
normal

Tracking

()

Status:
RESOLVED DUPLICATE of bug 422330

People

(Reporter: steve.horsley, Unassigned)

Details

Attachments

(1 file)

Attached file demonstrates the problem
46.40 KB, text/html
Details
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9b5pre) Gecko/2008031704 Minefield/3.0b5pre Build Identifier: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9b5pre) Gecko/2008031704 Minefield/3.0b5pre Attached file (I will attach it in another post, I don't see an attach option in this bug creation form) renders and scrolls very slowly (on Ubuntu Linux 7.10). Switching tabs to the file takes ~2.5 seconds, as does bringing Firefox to the front after it was partially covered by another window. Scrolling by slowly dragging the scrollbar slider can freeze the PC for 10 seconds. However, if I scroll very slowly, I can drag the slider all the way from end to end without freezing (taking more than 5 seconds for the whole length). Reproducible: Always Steps to Reproduce: 1. View the attached file in a new tab 2. Switch tabs 3. Drag the scroll slider Expected Results: I would have hoped that scrolling and rendering would have been as fast as FF2. This is a default install of FF - I removed ~/.mozilla before starting the test. I'm not using compiz/fusion on my desktop. For hardware details, see the attached file. I originally added this problem to the end of bug 413280, but it now seems this is a different issue.
Attached HTML file as promised.
Confirmed with latest trunk on Windows XP. This regressed around the time that the fix of Bug 368247 was checked in. Probably it is a dupe of one of the other bugs that have scroll performance troubles on a page with dotted borders.
Component: General → Layout
OS: Linux → All
Product: Firefox → Core
QA Contact: general → layout
Hardware: PC → All
Version: unspecified → Trunk
Ah! You are probably right! Although I can't see any dotted effect on the screen, the CSS at the top of the file says dotted. If I remove the dotted clause from the CSS then the file scrolls and renders lightning fast.
I am changing this to FIXED. I just tried beta 5 and it's blindingly fast. Well done.
Status: UNCONFIRMED → RESOLVED
Closed: 17 years ago
Resolution: --- → FIXED
Oops. Sorry to mess you around - I hadn't closed all instances of FF2 which is why it was fast. The problem still exists in FF3b5. Re-opening.
Status: RESOLVED → UNCONFIRMED
Resolution: FIXED → ---
Looks like this is a dupe of 422330, which would have been hard to tell until I just fixed the summary and stuff on it.
Status: UNCONFIRMED → RESOLVED
Closed: 17 years ago → 17 years ago
Resolution: --- → DUPLICATE
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