https://bugs.kde.org/show_bug.cgi?id=478974
Bug ID: 478974
Summary: plasma-systemmonitor uses ~70% cpu on the overview
page
Classification: Applications
Product: plasma-systemmonitor
Version: 5.91.0
Platform: Neon
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: ksysguard-b...@kde.org
Reporter: bjorn3...@protonmail.com
CC: ahiems...@heimr.nl, plasma-b...@kde.org
Target Milestone: ---
Created attachment 164429
--> https://bugs.kde.org/attachment.cgi?id=164429&action=edit
screenshot of the issue
SUMMARY
The system monitor uses ~70% of the cpu.
STEPS TO REPRODUCE
1. Download KDE Neon unstable 2023-12-24 (neon-unstable-20231224-1120.iso)
2. Run in a qemu vm with 4 cores and 4GB of memory and virtio-gpu graphics and
KVM vm hardware acceleration: `qemu-system-x86_64 -cpu max -machine
q35,accel=kvm -m 4096 -smp 4 -device virtio-net,netdev=net0 -netdev
user,id=net0 "$@" -cdrom ~/Downloads/neon-unstable-20231224-1120.iso -chardev
stdio,mux=on,id=char0 -mon chardev=char0,mode=readline -vga virtio`
3. Run the system monitor inside the vm.
OBSERVED RESULT
The system monitor uses ~70% of the cpu.
EXPECTED RESULT
The system monitor uses at most 1-2% of the cpu.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma:
(available in About System)
KDE Plasma Version: 5.91.90
KDE Frameworks Version: 5.248.0
Qt Version: 6.6.1
ADDITIONAL INFORMATION
https://bugs.kde.org/show_bug.cgi?id=475951 seems related, but that talks about
cpu usage spikes, while for me it is consistently high cpu usage.
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