https://bugs.kde.org/show_bug.cgi?id=415950
Bug ID: 415950
Summary: 100% CPU usage of plasmashell
Product: plasma-browser-integration
Version: unspecified
Platform: Archlinux Packages
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Firefox
Assignee: k...@privat.broulik.de
Reporter: insane...@gmail.com
Target Milestone: ---
Created attachment 124949
--> https://bugs.kde.org/attachment.cgi?id=124949&action=edit
Screenshot of atop output.
SUMMARY
Arch Linux
plasma-meta 5.17-1
kdebase-meta 19.12-1
Firefox 71.0
Plasma Integration 1.7
When Firefox generates a Download Notification in KDE CPU the CPU usage of
plasmashell skyrockets.
If I disable the Plasma integration, this does not happen. Also it does not
happen for Media playback, despite also having a progress bar.
STEPS TO REPRODUCE
1. Open Firefox
2. Enable Plasma integration plugin in firefox
3. Start a download
OBSERVED RESULT
plasmashell CPU usage goes to 100% (or higher)
EXPECTED RESULT
Download notification created with tracked progress, but not 100% CPU usage and
increased GPU usage.
SOFTWARE/OS VERSIONS
Arch Linux packages
plasma-meta 5.17-1
kdebase-meta 19.12-1
Firefox 71.0
Plasma Integration 1.7
Operating System: Arch Linux
KDE Plasma Version: 5.17.4
KDE Frameworks Version: 5.65.0
Qt Version: 5.14.0
Kernel Version: 5.4.8-arch1-1
OS Type: 64-bit
Processors: 12 × Intel® Core™ i7-9750H CPU @ 2.60GHz
Memory: 15.5 GiB of RAM
ADDITIONAL INFORMATION
Due to the increased GPU usage, I can only assume its getting updated very
frequently from firefox plugin and this is causing excessive redraws. Probably
needs a tweak in the Firefox plugin to send updates less frequently. Or some
kind of delay on the Plasma side to only actually update the notification less
frequently. But I'm just spit balling here.
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