[Libreoffice-bugs] [Bug 118165] New: Adding a new paragraph to a text block is rather CPU hogging

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=118165

            Bug ID: 118165
           Summary: Adding a new paragraph to a text block is rather CPU
                    hogging
           Product: LibreOffice
           Version: 5.4.0.3 release
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: medium
         Component: Writer
          Assignee: libreoffice-bugs at lists.freedesktop.org
          Reporter: telesto at surfxs.nl

Description:
Adding a new paragraph to a text block is rather CPU hogging

Steps to Reproduce:
1. Open the attached file
2. Enable Spell check 
3. Have CPU monitoring tool with CPU graph
4. Wait until CPU until the is fully processed (CPU near 0%)
5. Scroll down to the last page
6. Press Enter at the beginning of the 'ddd...' & monitor the the before CPU
usage before it drops back (1 minute with Libo6.1/ 35 seconds with LibO5.3


Actual Results:
60 seconds with Libo 6.1
35 seconds with LibO 5.3.5.2
8 second with 5.2 -> Difference between LibO5.2 <-> 5.3 (bug 112989)

Expected Results:
In this case: 35 seconds


Reproducible: Always


User Profile Reset: No



Additional Info:
Version: 6.2.0.0.alpha0+
Build ID: 51aa57cd8ed46d28262e0d315328231f0fa814f4
CPU threads: 4; OS: Windows 6.3; UI render: default; 
TinderBox: Win-x86 at 42, Branch:master, Time: 2018-06-12_05:54:56
Locale: nl-NL (nl_NL); Calc: CL

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