[Libreoffice-bugs] [Bug 141415] New: Very slow document opening (2-5min instead of 20sec)

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=141415

            Bug ID: 141415
           Summary: Very slow document opening (2-5min instead of 20sec)
           Product: LibreOffice
           Version: 7.1.1.2 release
          Hardware: x86-64 (AMD64)
                OS: Windows (All)
            Status: UNCONFIRMED
          Severity: normal
          Priority: medium
         Component: Writer
          Assignee: libreoffice-bugs at lists.freedesktop.org
          Reporter: igordegraf at gmail.com

Description:
Very slow openning document (from 1 m 50 sec to 5m) in comparison to MS Word
2016 (about 20 sec).

Examlpe of the file in attachments in different formats.

Original file was in DOC format (when I expirience problem), but for providing
more information I converted it to ODT and DOCX and tested it also. And seems
ODT have additional problem (much slower).

My OS - Windows 8.1 x64, RAM - 16Gb , CPU - Xeon E5-2440 v2 1.9GHz
LibreOffice 7.1.1.2


Steps to Reproduce:
1. Open LibreOffice  Writer.
2. Use "File->Open" to open example file and count a time until document
becomes visible and editable.
3. Open MS Office 2016 (or newer)
4. Select and open example file and scroll down vertical slider to the end of
the document once fist page is loaded. Count a time until the last page appears
and document bocomes editable.


Actual Results:
------------
sppfd249.doc 
LibreOffice 7.1.1.2 - 1m 50s
MS Office 2016 - 20sec
--------------
sppfd249.odt
LibreOffice 7.1.1.2 - 5m 10s (first page - 10s, stops UI stucking/freezing - 5m
10s; 50% CPU usage)
MS Office 2016 - 25sec
--------------
sppfd249.docx
LibreOffice 7.1.1.2 - 2m 30s (first page - 40s, stops UI stucking/freezing - 2m
30s), 50% CPU usage
MS Office 2016 - 20sec

Expected Results:
------------
sppfd249.doc 
LibreOffice 7.1.1.2 - 20sec-30sec

--------------
sppfd249.odt
LibreOffice 7.1.1.2 - 20sec-30sec

--------------
sppfd249.docx 
LibreOffice 7.1.1.2 - 20sec-30sec



Reproducible: Always


User Profile Reset: No



Additional Info:
Version: 7.1.1.2 (x64) / LibreOffice Community
Build ID: fe0b08f4af1bacafe4c7ecc87ce55bb426164676
CPU threads: 16; OS: Windows 6.3 Build 9600; UI render: Skia/Raster; VCL: win
Locale: ru-RU (ru_RU); UI: ru-RU
Calc: threaded

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