[Webkit-unassigned] [Bug 12788] New: REGRESSION: Going back one page in history has a noticeable delay

[bugzilla-daemon at webkit.org]

http://bugs.webkit.org/show_bug.cgi?id=12788

           Summary: REGRESSION: Going back one page in history has a
                    noticeable delay
           Product: WebKit
           Version: 420+ (nightly)
          Platform: Macintosh
        OS/Version: Mac OS X 10.4
            Status: NEW
          Keywords: Regression, NeedsRadar
          Severity: Normal
          Priority: P1
         Component: Page Loading
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: ddkilzer at webkit.org


Summary:

When using Cmd-Left Arrow or using the Safari browser back button to go back
one page in history, there is a noticeable (and annoying) delay in recent
nightly/ToT builds.

Steps to reproduce:

1. Open Safari/WebKit.
2. Open URL with lots of links: 
http://lists.macosforge.org/pipermail/webkit-unassigned/2007-February/date.html
3. Click on a link (any link).
4. Hit the browser back button (or Cmd-Left Arrow).

Expected results:

The previous page should be displayed in a reasonable amount of time.

Actual results:

The previous page has a noticeable pause (at least 1 sec on my old/slow
PowerBook G4) before going back.

Regression:

This is a regression from shipping Safari 2.0.4 (419.3) on Mac OS X 10.4.8
(8L127).  Tested with a local debug build of WebKit r19653 with the previously
stated software.

Notes:

Does the internal Safari PLT suite test going backwards, too, or is that too
non-deterministic?

This is a recent regression (within the last week or so).


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