Closed
Bug 172626
Opened 22 years ago
Closed 22 years ago
Very slow scrolling unless the background is commented out
Categories
(Core :: Layout, defect)
Tracking
()
People
(Reporter: jesup, Assigned: roc)
References
()
Details
(Keywords: perf)
When viewing Hixie's weblog, scrolling is VERY slow. Tried it on a BSD machine
(P3-800) and an extremely fast dual-cpu (2 x 2.0GHz P4 Xeon) Linux machine.
Hixie says he doesn't see this on Windows.
I did a save page (complete) of Hixie's weblog, and loaded it into a tab. Note
that not everything gets saved, which is another bug. The page still scrolls
slowly.
Even using the debug stylesheet for the page, which disables the background in
debug.css with
* { background: transparent ! important; }
it's still slow. Commenting out
html { background: url(../images/astrophy/original) 100% 99% fixed no-repeat; }
from spaced.css makes it fast, regardless of whether debug.css is loaded.
Interestingly, adding a <base href="http://ln.hixie.ch/"> to the <head> _also_
makes scrolling fast - though when loaded entirely from the original URL it's
slow. Very very weird.
(there was a discussion between myself, Hixie and Roc on IRC).
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Comment 3•22 years ago
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The following 4 bugs seem to be related (or duplicates): bug 90198 - scrolling very slow (fixed background) bug 172626 - Very slow scrolling unless the background is commented out bug 176150 - Fixed backgrounds cause horribly slow scrolling bug 184556 - style rule for fixed background causes lag when text scrolled
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Comment 4•22 years ago
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Surely a dupe, look at this:
"Commenting out
html { background: url(../images/astrophy/original) 100% 99% fixed no-repeat; }
from spaced.css makes it fast, regardless of whether debug.css is loaded. "
And especially at the "fixed".
*** This bug has been marked as a duplicate of 90198 ***Status: NEW → RESOLVED
Closed: 22 years ago
Resolution: --- → DUPLICATE
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Description
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