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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_UNCONFIRMED "
title="UNCONFIRMED - Undo is slower and consumes more CPU time after pressing undo (compared to 4.4.7.2)"
href="https://bugs.documentfoundation.org/show_bug.cgi?id=126344">126344</a>
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<th>Summary</th>
<td>Undo is slower and consumes more CPU time after pressing undo (compared to 4.4.7.2)
</td>
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<th>Product</th>
<td>LibreOffice
</td>
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<th>Version</th>
<td>6.4.0.0.alpha0+ Master
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<th>Hardware</th>
<td>All
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<th>OS</th>
<td>Windows (All)
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<th>Status</th>
<td>UNCONFIRMED
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>medium
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<th>Component</th>
<td>Writer
</td>
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<th>Assignee</th>
<td>libreoffice-bugs@lists.freedesktop.org
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<th>Reporter</th>
<td>telesto@surfxs.nl
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<pre>Description:
Undo is slower and consumes more CPU time after pressing undo (compared to
4.4.7.2)
Steps to Reproduce:
1. Open <span class=""><a href="http://bugs.documentfoundation.org/attachment.cgi?id=140185" name="attach_140185" title="sample file">attachment 140185</a> <a href="http://bugs.documentfoundation.org/attachment.cgi?id=140185&action=edit" title="sample file">[details]</a></span>
2. Press F5
3. Go to page 200
4. Set cursor at the beginning of pag 200
5. Press Shift & scroll to the bottom and select the end of the sentence (ergo
select everything from pag 200 until end)
6. Press Delete (wait until the CPU usage is down to nearly zero)
7. Press Undo (CTRL+Z
Actual Results:
30 seconds CPU spike after press undo. It's slower and more CPU hogging
Expected Results:
12 seconds spike in LibO 4.4.7.2 (comparison is bit off.. scheduling has
changed.. everything is processed on 'high priority'.. previously the
scheduling had more of idle way of doing things.. but it's to slow for sure..
Maybe large paragraphs issue
Reproducible: Always
User Profile Reset: No
Additional Info:
Version: 6.4.0.0.alpha0+ (x86)
Build ID: 2f2f4767089512c34514896bc37823f9310e9dd4
CPU threads: 4; OS: Windows 6.3; UI render: default; VCL: win;
TinderBox: Win-x86@42, Branch:master, Time: 2019-07-10_00:49:53
Locale: nl-NL (nl_NL); UI-Language: en-US
Calc: CL</pre>
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