[dolphin] [Bug 427471] New: Dolphin using up 100% CPU

[roachh at protonmail.com]

https://bugs.kde.org/show_bug.cgi?id=427471

            Bug ID: 427471
           Summary: Dolphin using up 100% CPU
           Product: dolphin
           Version: 20.08.1
          Platform: Archlinux Packages
                OS: Linux
            Status: REPORTED
          Severity: major
          Priority: NOR
         Component: general
          Assignee: dolphin-bugs-null at kde.org
          Reporter: roachh at protonmail.com
                CC: kfm-devel at kde.org
  Target Milestone: ---

Created attachment 132228
  --> https://bugs.kde.org/attachment.cgi?id=132228&action=edit
Dolphin useing up 98% of my CPU core (specifically, it alternates between CPUs
3, 5, and 7)

SUMMARY
While dolphin is open, nearly 100% of a CPU core is used, if not even more.
This happens even on empty folders.

STEPS TO REPRODUCE
1. Open dolphin
2. Open ksysguard, or any system monitor, and sort by CPU usage
3. Observe

OBSERVED RESULT
Dolphin is at the top, with at least 95% CPU usage (assuming you are NOT
dividing by total amount of cores), often 98-100%

EXPECTED RESULT
Dolphin should use very little CPU.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: 5.8.14-arch1-1 kernel, Plasma 5.19.5-1
(available in About System)
KDE Plasma Version: 5.19.5
KDE Frameworks Version: 5.74.0
Qt Version: 5.15.1

ADDITIONAL INFORMATION
Reproducable as early as dolphin 20.07.80, 5.8.2 kernel
It stays like this the whole time the app is open. Never goes down, never goes
up.

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