[Libreoffice-bugs] [Bug 108637] New: Memory usage has increased for creating a document with lots of empty sheets

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=108637

            Bug ID: 108637
           Summary: Memory usage has increased for creating a document
                    with lots of empty sheets
           Product: LibreOffice
           Version: 4.1.0.4 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:
Memory usage has increased for creating a document with lots of empty sheets.
With LibO 6.0.0.0 the total memory usage for 1000 sheets is around 390 MB. 
LibO4.0.0.3 requires only 231 MB. There is a steady increase visible.



Steps to Reproduce:
1. Open Calc
2. Monitor memory usage (Process explorer)
3. Menu Sheet - Insert Sheet -> 1000

Additional steps for a related issue
4. Delete one sheet and monitor memory increase. 

Actual Results:  
Total memory requirement (Calc + sheets)
4.0.0.3 = 231 MB
4.1.0.4 = 345 MB
4.4.6.3 = 303 MB
5.2.2.1 = 452 MB
6.0.0.0 = 390 MB

Memory increase after deleting one sheet
4.0.0.3 = 70 MB 
4.1.04 = 232 MB 
6.0.0.0 = 208

Expected Results:
Something similar to 4.0.0.3


Reproducible: Always

User Profile Reset: No

Additional Info:
Found in
Version: 6.0.0.0.alpha0+
Build ID: cbf371e07fd5dea1ea08a1f299360d1273961ebd
CPU threads: 4; OS: Windows 6.19; UI render: default; 
TinderBox: Win-x86 at 42, Branch:master, Time: 2017-06-14_23:13:57
Locale: en-US (nl_NL); Calc: CL

and in
4.1.0.4

but not in
Versie 4.0.0.3 (Bouw-id: 7545bee9c2a0782548772a21bc84a9dcc583b89)


User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64; rv:45.0) Gecko/20100101
Firefox/45.0

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