<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
<!DOCTYPE bugzilla SYSTEM "https://bugs.webkit.org/page.cgi?id=bugzilla.dtd">

<bugzilla version="5.0.4.1"
          urlbase="https://bugs.webkit.org/"
          
          maintainer="admin@webkit.org"
>

    <bug>
          <bug_id>13433</bug_id>
          
          <creation_ts>2007-04-21 03:59:53 -0700</creation_ts>
          <short_desc>Page is very slow to scroll and paint</short_desc>
          <delta_ts>2007-04-23 23:26:34 -0700</delta_ts>
          <reporter_accessible>1</reporter_accessible>
          <cclist_accessible>1</cclist_accessible>
          <classification_id>1</classification_id>
          <classification>Unclassified</classification>
          <product>WebKit</product>
          <component>Layout and Rendering</component>
          <version>523.x (Safari 3)</version>
          <rep_platform>Mac</rep_platform>
          <op_sys>OS X 10.4</op_sys>
          <bug_status>RESOLVED</bug_status>
          <resolution>FIXED</resolution>
          
          
          <bug_file_loc>(see bug 13337&apos;s attachment)</bug_file_loc>
          <status_whiteboard></status_whiteboard>
          <keywords></keywords>
          <priority>P2</priority>
          <bug_severity>Normal</bug_severity>
          <target_milestone>---</target_milestone>
          
          <blocked>13351</blocked>
          <everconfirmed>1</everconfirmed>
          <reporter name="Dave Hyatt">hyatt</reporter>
          <assigned_to name="Dave Hyatt">hyatt</assigned_to>
          
          

      

      

      

          <comment_sort_order>oldest_to_newest</comment_sort_order>  
          <long_desc isprivate="0" >
    <commentid>13613</commentid>
    <comment_count>0</comment_count>
    <who name="Dave Hyatt">hyatt</who>
    <bug_when>2007-04-21 03:59:53 -0700</bug_when>
    <thetext>It scrolls smoothly if you are at the top of the page but then gets super slow as you get closer to the bottom.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>13217</commentid>
    <comment_count>1</comment_count>
    <who name="Dave Hyatt">hyatt</who>
    <bug_when>2007-04-23 01:35:34 -0700</bug_when>
    <thetext>Every single span has a background color and they nest deeply.   By the time you get to the bottommost lines you are doing thousands of fill rects per line.

This would be very difficult to optimize.

Note IE7 is extremely slow on this page as well (the exact same symptom... fast at the top, slow at the bottom).
</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>13067</commentid>
    <comment_count>2</comment_count>
    <who name="Dave Hyatt">hyatt</who>
    <bug_when>2007-04-23 23:26:34 -0700</bug_when>
    <thetext>Fixed.
</thetext>
  </long_desc>
      
      

    </bug>

</bugzilla>