[Libreoffice-bugs] [Bug 47644] New: Huge load time and CPU load

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=47644

             Bug #: 47644
           Summary: Huge load time and CPU load
    Classification: Unclassified
           Product: LibreOffice
           Version: LibO 3.5.1 Release
          Platform: Other
        OS/Version: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: medium
         Component: Writer
        AssignedTo: libreoffice-bugs at lists.freedesktop.org
        ReportedBy: ced at bernispa.com


Created attachment 58807
  --> https://bugs.freedesktop.org/attachment.cgi?id=58807
Sample file to recreate the problematic document

Today a coworker has called me because LibreOffice took forever to open a doc
document (Word 97 format). It was not locked but simply very very very slow in
the "Importing document..." phase. Really unusable: i had to kill LO.
It is about 22 MB size document.

That PC is a Windows XP SP3 that today i have upgraded from go-oo 2.4.1 to LO
3.5.1. That document opened without that huge slowness with go-oo.

I tried to open the same document with my LO 3.5.1 (Win2000 SP4) and i waited
until the end: 45 minutes! And after that time the CPU stayed at 100% and never
falled down, rendering the application very unresponsive.

Riproducible under: 3.5.1rc1 (Win7 SP1), 3.5.0 (Debian Linux), 3.5.1 (Debian
Linux).

Not reproducible under: LO 3.4.3 (WinXP SP3) and under OOo 3.2.1 (Win2000 SP4).

So seems to be a 3.5.x regression.

Since that document contains sensible data and since that document was
generated by me some months ago, i tried to regenerate a new one with the
following steps:
- an application generated a document like the one attached (obscured by
changing every letter with X, so same file format, same line length, ecc).
- copy/paste the entire content inside a fresh new LibreOffice Writer document.
- changed the page format in landscape, and the size in A4.
- saved in doc format (word 97/2000/xp/2003).

Try to follow yourself the steps above and you'll notice that:
- After the copy/paste the CPU will go to 100% and stays here forever (or very
very long).
- Notice the slow saving phase.
- Try to open the doc document you generated and wait, wait, wait...

Cesare.

-- 
Configure bugmail: https://bugs.freedesktop.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.