[dolphin] [Bug 450696] New: Copying large amount of files locks up KDE. cp / rsync no issue. So def Dolphin.

[dft]

https://bugs.kde.org/show_bug.cgi?id=450696

            Bug ID: 450696
           Summary: Copying large amount of files locks up KDE. cp / rsync
                    no issue. So def Dolphin.
           Product: dolphin
           Version: 21.12.2
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: dolphin-bugs-null at kde.org
          Reporter: dieseltrike at gmail.com
                CC: kfm-devel at kde.org
  Target Milestone: ---

SUMMARY
If I copy large files say around 20G over lan / autofs / ssh etc KDE Plasma
tends to lockup for minutes at a time. Over LOCAL mounts. 

If I do the exact same using konsole and cp / rsync. Plasma is responsive.
Music will continue to play but the whole desktop will freeze up, shortcuts
won't work, virtual desktops won't work. Screen repaints won't work.


STEPS TO REPRODUCE
1. Setup  a local mount of sshfs via autofs
2. Copy and paste a large folder say a tv series

OBSERVED RESULT
KDE Plasma hangs and ignores input. It does NOT crash.

EXPECTED RESULT
Dolphin's file copy operations should run in their own threads and not hang the
DE.

SOFTWARE/OS VERSIONS
Operating System: ArcoLinux
KDE Plasma Version: 5.24.1
KDE Frameworks Version: 5.91.0
Qt Version: 5.15.2
Kernel Version: 5.16.10-arch1-1 (64-bit)
Graphics Platform: X11
Processors: 32 × AMD Ryzen 9 5950X 16-Core Processor
Memory: 31.3 GiB of RAM
Graphics Processor: AMD Radeon RX 5700 XT

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