[Libreoffice-bugs] [Bug 134271] New: Undo of deleting a row exceptional slow compared to (insert/delete/ or reject delete row)

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=134271

            Bug ID: 134271
           Summary: Undo of deleting a row exceptional slow compared to
                    (insert/delete/ or reject delete row)
           Product: LibreOffice
           Version: 4.0.0.3 release
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: medium
         Component: Calc
          Assignee: libreoffice-bugs at lists.freedesktop.org
          Reporter: telesto at surfxs.nl

Description:
Undo of deleting a row exceptional slow compared to (insert/delete/ or reject
delete row)

Steps to Reproduce:
1. Open attachment 161647
2. Copy column A-C
3. Paste it always next the other, so DEF GHI KLM NOP (needed to feel the
performance degradation; so create more if you want to wait longer.. less if
you want to wait sorter.. 
4. Insert a row -> 3 seconds -> create more columns; not really difference
5. Delete the row -> 7 seconds -> This tends to decrease with more columns
6. Undo the delete of a column -> 10 seconds -> This tends to decrease with
more columns
7. Now repeat step 4/5 with tracking changes 
* Inserting 2 seconds (faster?)
* Deleting 5 seconds (faster)
* Manage track changes reject -> 6 seconds

Note replace rows for columns.. and the idea is the same

Actual Results:
delete and undo slow compared to insertion and in comparison with tracking
changes  enabled

Expected Results:
Equal to tracking changes enabled..and maybe even optimize tracking changes
delete/reject (also showing the 'same' speed decrease trend. Does needs a
double the amount of column to be annoying; again some quadratic decrease..
only starting with a lower number?)


Reproducible: Always


User Profile Reset: No



Additional Info:
Version: 7.1.0.0.alpha0+ (x64)
Build ID: aadcd6f90916bd2b9734ae793141d0c77cc5b46c
CPU threads: 4; OS: Windows 6.3 Build 9600; UI render: default; VCL: win
Locale: nl-NL (nl_NL); UI: en-US
Calc: CL

and in
4.0.0.3 (4.2 and 4.4.7.2).. Did check 5.0 - 7.1.

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