high CPU load on specific website



16 years ago
9 years ago


(Reporter: odi, Unassigned)


Windows 2000

Firefox Tracking Flags

(Not tracked)


(Whiteboard: DUPEME, URL)



16 years ago
User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4b) Gecko/20030507
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4b) Gecko/20030507

CPU load quickly changes from low to very highh (near 100%) slowing down the
whole system. Browser is frozen during high-load phases.

Reproducible: Always

Steps to Reproduce:
1. Load the given URL
2. watch task monitor

Actual Results:  
High CPU load.

Expected Results:  
Low CPU load.

Not sure if this is an actual browser bug or just stupid Javascript code. But IE
does not show a similar behaviour. So I guess it's the Javascript engine that
performs bad.

Comment 1

16 years ago
Reassigning to Browser-General until we can get further information.
I'm not seeing this at all; the site loads fast, with normal CPU load.

I'm using Mozilla/5.0 (Windows; U; WinNT4.0; en-US; rv:1.4b) Gecko/20030515
Machine: WinNT4.0(SP6), 128M RAM, 500 MHz CPU
Assignee: rogerl → general
Component: JavaScript Engine → Browser-General
QA Contact: pschwartau → general

Comment 2

15 years ago
I can confirm that scrolling on this site will consume nearly 100% of the CPU on
the 20031006 nightly, Win 2000. This has to be a dupe of one of the other
slow-scrolling bugs, but I can't quite figure out which. It has a tiny
background image and uses no fixed-position elements. Perhaps bug 187822? I'm
sending this to ImageLib since that bug looks like the best culprit to me,
although I suppose it could be a layout issue. I apologize if this is the wrong
Assignee: general → jdunn
Component: Browser-General → Image: GFX
Ever confirmed: true
QA Contact: general → tpreston
Whiteboard: DUPEME

Comment 3

13 years ago
Over 70% CPU load on Athlon64 3500+.

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9a1) Gecko/20060504 Minefield/3.0a1


12 years ago
Assignee: pavlov → nobody


9 years ago
Component: Image: Painting → Image: Painting
Product: Core → Core Graveyard
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