https://bugs.documentfoundation.org/show_bug.cgi?id=130401
Bug ID: 130401
Summary: Calc periodically causes high CPU load, even when
window is minified
Product: LibreOffice
Version: 6.1.5.2 release
Hardware: Other
OS: Linux (All)
Status: UNCONFIRMED
Severity: normal
Priority: medium
Component: Calc
Assignee: [email protected]
Reporter: [email protected]
Description:
Calc periodically causes high CPU load (1 core @100%), even when its window was
minified and there was no user interaction.
Load goes away as soon as document is "Save"d again, even though there were no
changes/edits since last saving.
Steps to Reproduce:
1. Open attached Calc spreadsheet. It's fairly small, 700 rows by 2 columns,
and around 20kBytes.
2.Minify the Calc window
3.Wait indefinitely ;-)
4 . On my machine, an 8 core Intel NUC, eventually the CPU fan revs up, and the
xfce tas monitor indicates a 100% CPU load of one core, caused by LibreOffice,
giving an average CPU load of between 12% and 13%.
5. Restoring the LibreOffice Calc window and hitting the "Save" button makes
the CPU load go away, until the next time this happens. Which may be 30 (or
more) minutes later.
Actual Results:
High CPU load, as shown in attached screenshot.
Expected Results:
If application is idle, like when window is minified and no user interaction
taking place, it should remain at miniscule CPU load.
Reproducible: Always
User Profile Reset: Yes
Additional Info:
OS is Debian stable, fully updated as of today. Synaptic does not indicate any
updatable packages, even after reloading the packages list from the download
sources.
LibreOffice version is as follows:
Version: 6.1.5.2
Build-ID: 1:6.1.5-3+deb10u5
CPU-Threads: 8; BS: Linux 4.19; UI-Render: Standard; VCL: gtk2;
Gebietsschema: de-CH (de_CH.UTF-8); Calc: group threaded
After restarting LibreOffice in Safe Mode, pretty exactly 30 minutes later the
CPU fan started revving up, with CPU load at 13% average, one core at 100%.
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