306525 - scrolling is choppy on certain websites

Status: RESOLVED WORKSFORME

(Camino Graveyard :: General, defect)

Description

[mattwala]

User-Agent:       Mozilla/4.0 (compatible; MSIE 7.0b; Windows NT 6.0)
Build Identifier: Version 2005082604 (0.9a2+)

go to that URL.  If you are using a nighlty build of Camino, the scrolling is
jumpy.  No, it's not my hardware, the same page works perfectly well in safari.

Reproducible: Always

Steps to Reproduce:
1.wait till the page is done loading
2.press the scroll bar and move it down at a normal pace
3.

Actual Results:  
the scrolling was jumpy and choppy, as if under stress

Expected Results:  
scrolled normally, like you see in the bugzilla

Comment 1

[Smokey Ardisson (offline for a while; not following bugs - do not email)]

There's a fixed-position bg image, so this is probably the "fixed/absolutely
positioned images causes slow scrolling" bug (what's its number?)...

Comment 2

[Samuel Sidler (old account; do not CC)]

I'm not sure we have one. There was a bug for large background images, but that
doesn't seem to be the case here.

Whatever it is, I also see this when browsing that site, so confirming, but
we'll have to narrow down exactly what it is.

Comment 3

[Smokey Ardisson (offline for a while; not following bugs - do not email)]

It might be in Core somewhere; I think Wevah mentioned it one time in some bug
(but I can't find that mention or the apparent bug) :-(

Comment 4

[Stuart Morgan]

How does this look for people on trunk (particularly people with older hardware)? It's not bad at all for me in recent trunk, but my machines are pretty fast.

Comment 5

[Smokey Ardisson (offline for a while; not following bugs - do not email)]

I believe philippe has a PowerBook....

Comment 6

[philippe (part-time)]

(In reply to comment #5)
> PowerBook....

Still...

The page in the URL field scrolls fine here; the background image might slow down scrolling slightly but it is barely noticeable (and, for trunk, that would be bug 364221).
Also, scrolling may feel/look 'choppy' because the long text lines with small type/line-height sort of flicker when scrolling fast, but that is the same in other browsers (checked with the latest Webkit build).

Comment 7

[Stuart Morgan]

Closing WFM (on trunk) per comment 6.