Created attachment 141477 [details] illustration Basically a duplicate of #414036 with very same problem: any network activity maxes out CPU usage of the monitor app, so that it eats up the whole CPU core. STEPS TO REPRODUCE 1. Open system monitor 2. Got to the "Applications" tab 3. Initiate network activity OBSERVED RESULT The monitor app utilizes a full CPU core. SOFTWARE/OS VERSIONS Operating System: Gentoo KDE Plasma Version: 5.22.5 KDE Frameworks Version: 5.85.0 Qt Version: 5.15.2 Kernel Version: 5.14.1-gentoo (64-bit) Graphics Platform: X11 Processors: 8 × Intel® Core™ i7-4810MQ CPU @ 2.80GHz Memory: 31.3 GiB of RAM Graphics Processor: Mesa DRI Intel® HD Graphics 4600
For the illustration purposes the network activity columns are enabled in the screenshot, but CPU usage stays the same with the columns set to "hidden".
Same thing on Arch Linux. Operating System: Arch Linux KDE Plasma Version: 5.22.5 KDE Frameworks Version: 5.86.0 Qt Version: 5.15.2 Graphics Platform: Wayland
Still exists.. this is the reason i just never use this app. i'll use btop before using this because of the outrageous cpu usage to have it open which really just defies the point.. I would much rather use it because it is rather well layed out but the CPU usage for me is a deal breaker and its been that way for years now.. Operating System: Fedora Linux 38 KDE Plasma Version: 5.27.4 KDE Frameworks Version: 5.105.0 Qt Version: 5.15.9 Kernel Version: 6.2.15-300.fc38.x86_64 (64-bit) Graphics Platform: Wayland Processors: 4 × AMD A6-6310 APU with AMD Radeon R4 Graphics Memory: 10.6 GiB of RAM Graphics Processor: KABINI
Hi - some targeted work has gone into reducing System Monitor's CPU usage (https://blogs.kde.org/2025/01/11/this-week-in-plasma-final-plasma-6.3-features/#notable-in-performance--technical) - could you please let us know if this issue remains in Plasma 6.3.5? Thanks!
(In reply to John Kizer from comment #4) > Hi - some targeted work has gone into reducing System Monitor's CPU usage > (https://blogs.kde.org/2025/01/11/this-week-in-plasma-final-plasma-6.3- > features/#notable-in-performance--technical) - could you please let us know > if this issue remains in Plasma 6.3.5? Thanks! I won't be able to test until the fix is released in the next Kubuntu LTS.
🐛🧹 ⚠️ This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information, then set the bug status to REPORTED. If there is no change for at least 30 days, it will be automatically closed as RESOLVED WORKSFORME. For more information about our bug triaging procedures, please read https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging. Thank you for helping us make KDE software even better for everyone!
🐛🧹 This bug has been in NEEDSINFO status with no change for at least 30 days. Closing as RESOLVED WORKSFORME.