Bug 56162 - REGRESSION(r77101): 16% slowdown on scrolling-boxes demo.
Summary: REGRESSION(r77101): 16% slowdown on scrolling-boxes demo.
Status: ASSIGNED
Alias: None
Product: WebKit
Classification: Unclassified
Component: Layout and Rendering (show other bugs)
Version: 528+ (Nightly build)
Hardware: PC OS X 10.5
: P2 Normal
Assignee: Simon Fraser (smfr)
URL: http://people.mozilla.org/~roc/scroll...
Keywords: InRadar, Regression
Depends on: 58161
Blocks:
  Show dependency tree / graph
 
Reported: 2011-03-10 18:53 PST by Andy Estes
Modified: 2024-03-04 14:50 PST (History)
6 users (show)

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Description Andy Estes 2011-03-10 18:53:12 PST 
<http://trac.webkit.org/changeset/77101> caused the demo at http://people.mozilla.org/~roc/scrolling-boxes.html to be 43% slower than it was in r77100 and ~248% slower than it was in Safari 5.0.3.

Note that this slowdown is in addition to the one tracked by <https://bugs.webkit.org/show_bug.cgi?id=56141> for the same demo.
Comment 1 Andy Estes 2011-03-10 19:16:00 PST 
<rdar://problem/9119579>
Comment 2 Simon Fraser (smfr) 2011-04-10 20:15:26 PDT 
58161 has a patch that fixes most of this.
Comment 3 Simon Fraser (smfr) 2011-04-10 22:11:41 PDT 
WebKit nightly r83376: ~7500ms
With patch in bug 58161: ~5900ms
Safari 5 (with -webkit-box-shadow): ~5000ms
Comment 4 Ahmad Saleem 2024-03-04 14:50:16 PST 
Wayback Archive (2011 March - copy) - https://web.archive.org/web/20110313233153/http://people.mozilla.org/~roc/scrolling-boxes.html

Chrome Canary 124 (with lots of tab and bunch of background activities) - 549ms

Safari Technology Preview - 541ms

Firefox Nightly 125 - 623ms

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I think all browsers are close within margin, so it would be good to close it now.

@Simon - any input?