Created attachment 137411 [details] Comparing the KSysGuard output to htop, which shows the expected CPU usage. SUMMARY When the "System Load" tab has a polling rate any faster than 0.5s, CPU load reports as 0% with occasional spikes. Running a system stress results in occasional spikes of 100%. The graph draws correctly if the window is rapidly resized. https://www.youtube.com/watch?v=bkeOvN3hOH0 STEPS TO REPRODUCE 1. Use KDE Plasma/Arch kernel 5.12rc 2. Run all-core stress test 3. Set "System Load" tab to refresh every 0.01s OBSERVED RESULT CPU usage is reported as 0% with occasional momentary spikes to 100%. EXPECTED RESULT CPU usage should be pegged at 100% as reported in htop. SOFTWARE/OS VERSIONS Windows: macOS: Linux/KDE Plasma: (available in About System) KDE Plasma Version: 5.12.3 KDE Frameworks Version: 5.80.0 Qt Version: 5.15.2 ADDITIONAL INFORMATION Kernel 5.12.rc.d0314.g1e28eed-1 AMD Radeon RX 570 4GB Compositor in OpenGL mode
ksysguard is no longer maintained, in Plasma 6 there is the Plasma system monitor for this task. If your issue still happens with the Plasma 6 replacement, please re-open and we can move this bug to the new product, thanks!