Bug 515741

Summary: High CPU Usage for system monitor
Product: [Applications] plasma-systemmonitor Reporter: JC <john.chufar>
Component: generalAssignee: KSysGuard Developers <ksysguard-bugs>
Status: REPORTED ---    
Severity: normal CC: ahiemstra, akselmo, john.chufar, plasma-bugs-null, sephiroth_pk
Priority: NOR    
Version First Reported In: 6.5.5   
Target Milestone: ---   
Platform: openSUSE   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:
Attachments: Screenshot

Description JC 2026-02-08 20:37:40 UTC 
***
If you're not sure this is actually a bug, instead post about it at https://discuss.kde.org

If you're reporting a crash, attach a backtrace with debug symbols; see https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports

Please remove this comment after reading and before submitting - thanks!
***

SUMMARY


STEPS TO REPRODUCE
1. Open System Monitor
2. Go to Processes Tab
3. View percentage CPU used for plasma-systemoniitor

OBSERVED RESULT
varies between 10% and 20%

EXPECTED RESULT
< 5%

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
(available in the Info Center app, or by running `kinfo` in a terminal window)
Linux/KDE Plasma: openSUSE Tumbleweed 20260207
KDE Plasma Version: 6.5.5
KDE Frameworks Version: 6.22.0
Qt Version: 6.10.2

ADDITIONAL INFORMATION
Operating System: openSUSE Tumbleweed 20260207
KDE Plasma Version: 6.5.5
KDE Frameworks Version: 6.22.0
Qt Version: 6.10.2
Kernel Version: 6.18.8-1-default (64-bit)
Graphics Platform: X11
Processors: 4 × Intel® Core™ i7-7600U CPU @ 2.80GHz
Memory: 16 GiB of RAM (15.5 GiB usable)
Graphics Processor: Intel® HD Graphics 620
Manufacturer: HP
Product Name: HP EliteBook 840 G4
Comment 1 Akseli Lahtinen 2026-02-09 09:22:56 UTC 
For me it seems to be around 0.5% to 2%.

Operating System: KDE Linux 2026-02-09
KDE Plasma Version: 6.6.80
KDE Frameworks Version: 6.24.0
Qt Version: 6.10.2
Kernel Version: 6.18.7-zen1-1-zen (64-bit)
Graphics Platform: Wayland
Processors: 12 × AMD Ryzen 5 3600 6-Core Processor
Memory: 16 GiB of RAM (15.5 GiB usable)
Graphics Processor: AMD Radeon RX 6600
Comment 2 Riccardo Robecchi 2026-02-09 13:38:54 UTC 
Created attachment 189393 [details]
Screenshot

In my case it is constantly at 100% or over.

Operating System: KDE Neon
KDE Plasma Version: 6.5.5
KDE Frameworks Version: 6.22.0
Qt Version: 6.10.1
Kernel Version: 6.18.7-x64v3-xanmod1 (64-bit)
Graphics Platform: X11
Processors: AMD Ryzen 5 2500U
Memory: 32 GiB of RAM
Graphics Processor: AMD Radeon Vega