https://bugs.kde.org/show_bug.cgi?id=458308
Bug ID: 458308
Summary: Kcalc uses excessive CPU when idle - workaround found
Product: kcalc
Version: 22.08.0
Platform: Neon Packages
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: ete...@alum.rit.edu
Reporter: cshrimpt+...@gmail.com
Target Milestone: ---
SUMMARY
When Kcalc is launched, the app uses an excessive amount of CPU when idle. CPU
usage is between 20-50%. If I create an application setting that slightly
increases the window size at launch, the app uses an expected amount of CPU
when idle of <1%. Resizing the window after launch also reduces CPU, but it's
more convenient to do it at launch.
Note that resizing back to the original size will drive up the CPU to excessive
levels.
***
NOTE: If you are reporting a crash, please try to attach a backtrace with debug
symbols.
See
https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports
***
STEPS TO REPRODUCE
1. Launch Kcalc
2.
3.
OBSERVED RESULT
CPU usage between 20-50% when idle
EXPECTED RESULT
CPU usage should be <1% when idle
SOFTWARE/OS VERSIONS
Windows:
macOS:
Linux/KDE Plasma: KDE Neon - kernel 5.15.0-46
(available in About System)
KDE Plasma Version: 5.25.4
KDE Frameworks Version: 5.97.0
Qt Version: 5.15.5
ADDITIONAL INFORMATION
Intel HD Graphics 520
Intel i7-6500U
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