https://bugs.kde.org/show_bug.cgi?id=373183
Bug ID: 373183
Summary: CPU load is reported as more than 100%
Product: ksysguard
Version: 5.7.5
Platform: Other
OS: Linux
Status: UNCONFIRMED
Severity: normal
Priority: NOR
Component: ksysguard
Assignee: ksysguard-b...@kde.org
Reporter: andy...@mail.ru
Target Milestone: ---
Created attachment 102578
--> https://bugs.kde.org/attachment.cgi?id=102578&action=edit
The screenshot illustrating the problem
The System Monitor application occasionally shows more than 100% CPU load for
some processes that actually load all cores (in my case, it's ffmpeg
compressing a 1080p video with libx265). Other utilities, such as top and htop,
never exceed 100% load for the process (top maxes at 800.0% on an 8-thread CPU,
htop never exceeds 100% on the CPU load bars).
To reproduce you have to run a process that puts CPU under a heavy load on all
threads, like video encoding. Liquorix kernel (or a kernel with MuQSS/BFS) may
be a significant pre-requisite as well, I'm not sure it can be reproduced with
the stock Ubuntu kernel.
Kubuntu 16.10, x86_64, liquorix kernel:
uname -a
Linux lastique-pc 4.8.0-11.1-liquorix-amd64 #1 ZEN SMP PREEMPT liquorix 4.8-16
(2016-11-29) x86_64 x86_64 x86_64 GNU/Linux
CPU: Core i7 2600K (4-core, 8-thread).
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