Bug 472620 - Wrong CPU Accounting after linux kernel 6.4.3 and 6.1.38
Summary: Wrong CPU Accounting after linux kernel 6.4.3 and 6.1.38
Status: RESOLVED UPSTREAM
Alias: None
Product: plasma-systemmonitor
Classification: Applications
Component: general (show other bugs)
Version: 5.27.6
Platform: Arch Linux Linux
: HI major
Target Milestone: ---
Assignee: KSysGuard Developers
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2023-07-25 14:58 UTC by Alexander Ullrich
Modified: 2023-07-26 00:22 UTC (History)
3 users (show)

See Also:
Latest Commit:
Version Fixed In:
Sentry Crash Report:

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2023-07-25 14:58 UTC, Alexander Ullrich 		Details
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Description Alexander Ullrich 2023-07-25 14:58:49 UTC 
Created attachment 160515 [details]
Example

SUMMARY
Plasma widgets account for cpu core usage report one busy, 100 % used, core on linux 6.4.4 and later and on 6.1.39 and later.

https://bugs.archlinux.org/task/79177
https://lore.kernel.org/lkml/12251678.O9o76ZdvQC%40natalenko.name

Apparently the kernel won't change its behaviour and expects tools to change.

OBSERVED RESULT
One core constantly reported as 100 % used.

EXPECTED RESULT
No usage attributed, see links above.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Arch linux all kernels after 6.4.3, 6.1.38, Plasma 5.27.6
KDE Plasma Version: 5.27.6
KDE Frameworks Version: 5.108.0
Qt Version: 5.15.10
Comment 2 Nate Graham 2023-07-26 00:22:32 UTC 
Oh good!