Bug 100939 - Freezes when opening Formula Editor in large document with many equations.
Summary: Freezes when opening Formula Editor in large document with many equations.
Status: RESOLVED INSUFFICIENTDATA
Alias: None
Product: LibreOffice
Classification: Unclassified
Component: Formula Editor (show other bugs)
Version:
(earliest affected)
5.1.4.2 release
Hardware: Other Linux (All)
: medium normal
Assignee: Not Assigned
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2016-07-15 17:36 UTC by Benjamin Etgen
Modified: 2017-07-27 12:02 UTC (History)
3 users (show)

See Also:
Crash report or crash signature:

Attachments
Problematic file with lots of formula objects (840.99 KB, application/vnd.oasis.opendocument.text)
2016-08-08 22:18 UTC, richard-oss 		Details
View All Add an attachment (proposed patch, testcase, etc.)

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Description Benjamin Etgen 2016-07-15 17:36:49 UTC 
I have a 14 page document with many in-line LibreOffice Math equations and anchored images from LibreOffice Draw. When I edit an equation by clicking on it the screen realigns to make room for the element view on the left side. This takes several seconds with fragments of the other views visible. Then the LibreOffice screen becomes grey for a few seconds. A similar sequence happens in reverse when I close the equation editor. Inserting new equations is equally slow.

This problem only recently started (July 2016). Prior to that the document did not slow down while editing equations.

Finally, I would be willing to email the file that has begun freezing the machine, if you wish.

I have gradually increased the memory allocated to LibreOffice in Tools/Options/Memory to 900 MBs with no change in performance. I have also used the System Monitor to watch the CPU activity during an equation edit. In each case one of the CPUs peaks at 100%. I am running Ubuntu 16.04 LTS with 7.7 GiB of memory and and Intel Core i&-377OS CPU @ 3.10 GHz x 8 with a 64-bit OS and 1.0 TB of disk space.
Comment 1 Buovjaga 2016-07-16 20:22:48 UTC 
(In reply to Benjamin Etgen from comment #0)
> Finally, I would be willing to email the file that has begun freezing the
> machine, if you wish.

Can you share it publicly? If not in its current form, please anonymize it in a way that preserves the problematic behavior and attach it to the report.

Set to NEEDINFO.
Change back to UNCONFIRMED after you have provided the document.
Comment 2 richard-oss 2016-08-08 22:18:35 UTC 
Created attachment 126678 [details]
Problematic file with lots of formula objects

I am seeing the same behavior on 5.1.5.1 (Build ID: 5.1.5.1-2.fc24). I am attaching my document. Editing the formula object on page 10 will freeze LibreOffice, and a few seconds later locks up my entire machine.
Comment 3 richard-oss 2016-08-08 22:29:15 UTC 
I forgot to mention that the lock-up usually occurs when I am copying or cutting text from one formula object and pasting it into another.
Comment 4 Buovjaga 2016-08-09 11:05:37 UTC 
(In reply to richard-oss from comment #3)
> I forgot to mention that the lock-up usually occurs when I am copying or
> cutting text from one formula object and pasting it into another.

No problem for me

Win 7 Pro 64-bit, Version: 5.2.0.4 (x64)
Build ID: 066b007f5ebcc236395c7d282ba488bca6720265
CPU Threads: 4; OS Version: Windows 6.1; UI Render: default; 
Locale: fi-FI (fi_FI)
Comment 5 arnaud.malfoy 2016-10-14 10:10:34 UTC 
I can't reproduce your issue on Libre Office 5.2.2.2 on Ubuntu 16.10. However I see a similiar issue when I'm not full screen and try to change the size of the window.
Comment 6 Thomas Hackert 2016-12-11 13:14:59 UTC 
Hello Benjamin, *,
thank you very much for reporting this bug :) I cannot reproduce it with

OS: Debian Testing AMD64
LO: Version: 5.1.6.2
Build-ID: 07ac168c60a517dba0f0d7bc7540f5afa45f0909
CPU-Threads: 4; BS-Version: Linux 4.5; UI-Render: Standard; 
Gebietsschema: de-DE (de_DE.UTF-8); Calc: group
(parallel installed with "dpkg -i /path/to/*.deb")

nor with

LO: Version: 5.2.3.3
Build-ID: 1:5.2.3-2
CPU-Threads: 4; BS-Version: Linux 4.5; UI-Render: Standard; VCL: gtk3; 
Gebietsschema: de-DE (de_DE.UTF-8); Calc: group
(Debian's own version)

nor with

LO: Version: 5.1.4.2
Build-ID: f99d75f39f1c57ebdd7ffc5f42867c12031db97a
CPU-Threads: 4; BS-Version: Linux 4.5; UI-Render: Standard; 
Gebietsschema: de-DE (de_DE.UTF-8)
(parallel installed, following the instructions from https://wiki.documentfoundation.org/Installing_in_parallel/Linux)

sorry ... :( Would you be so kind to test it with a newer version than 5.1.4.2, please? And does this bug only occur with our version or are you using Ubuntu's version of LO? If your bug is only reproducible with Ubuntu's version, it would be nice, if you close this bug here and search for it on https://bugs.launchpad.net/ubuntu/+source/libreoffice to see if it is already reported, and if not to report it there ... ;)
Have a nice Sunday
Thomas.
Comment 7 Xisco Faulí 2016-12-11 15:24:31 UTC Comment hidden (obsolete)
Comment 8 QA Administrators 2017-06-28 12:37:09 UTC Comment hidden (obsolete)
Comment 9 QA Administrators 2017-07-27 12:02:36 UTC Comment hidden (obsolete)