https://bugs.documentfoundation.org/show_bug.cgi?id=99779
Bug ID: 99779
Summary: libreoffice consistently becomes unresponsive with
100% CPU usage long time
Product: LibreOffice
Version: 4.3.3.2 release
Hardware: x86-64 (AMD64)
OS: Linux (All)
Status: UNCONFIRMED
Severity: normal
Priority: medium
Component: Calc
Assignee: libreoffice-bugs@lists.freedesktop.org
Reporter: mikl...@gmail.com
Created attachment 124979
--> https://bugs.documentfoundation.org/attachment.cgi?id=124979&action=edit
MTR fares.ods
LibreOffice Calc is too slow for doing spreadsheet operations. For example,
even a simple operation, like deleting sheets, takes more than 10 minutes of
100% CPU usage, unresponsive in the process.
For example, the attached 'MTR fares.ods', which contains the MTR fare tables
from 2007 onwards, makes LibreOffice freeze consistently. Simple operations
like moving sheets, deleting sheets, or inserting sheets in the middle, or even
undoing a simple operation, freezes the app for a long time.
Even working with smaller files exhibits the same problem. When I open the
attached 'integrated fares before merger.ods', which contains formulae
calculating with values from 'ER.ods', 'WR.ods' and 'MTR.ods', LibreOffice
becomes very slow to the extent that scrolling becomes not smooth.
To make the matter worse, even calculating the formulae take 100% CPU long
time. The attached 'master.ods' contains indirect references where the user can
type in any sheet name from any files in order to obtain data (as I have tens
of different fare tables to work with, I put them in different files in order
to speed up loading time). With AutoCalculate on, the app is basically
unusable. When I turn it off and type my desired sheet names, for example, with
the attached '2015.ods', I type in '2015.ods'#'adult octopus' into the cell
labelled from and '2015.ods'#'student octopus' into the cell labelled to, and
press F9, the app freezes with 100% CPU usage. This is totally unacceptable.
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