[dolphin] [Bug 426672] New: Running many docker containers makes Dolphin unusably slow

[bugzilla_noreply at kde.org]

https://bugs.kde.org/show_bug.cgi?id=426672

            Bug ID: 426672
           Summary: Running many docker containers makes Dolphin unusably
                    slow
           Product: dolphin
           Version: 20.04.0
          Platform: Kubuntu Packages
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: dolphin-bugs-null at kde.org
          Reporter: mattes.ruckdeschel at tuhh.de
                CC: kfm-devel at kde.org
  Target Milestone: ---

SUMMARY
Hi,

I just switched to Kubuntu 20.04 from Ubuntu 18.04 and everything started
smoothly. I want Kubuntu to be my new dev system and I need Docker.

Dolphin, however proofed to be unusable when using docker, as it displays
containers as devices which makes it freeze for a few seconds, every time that
it is focused.

According to a reddit post, I've found https://phabricator.kde.org/D22080 is
the culprit for this behavior. I have reverted the patch and rebuild and
installed solid and the docker containers are still listed as devices (which I
personally don't want, although I can live with it and can follow the argument
for having them there), but Dolphin stays responsive.


STEPS TO REPRODUCE
1. Freshly install Kubuntu 20.04 
2. Start a bunch of Docker containers

OBSERVED RESULT
Dolphin slows down significantly, needing several seconds before being
responsive

EXPECTED RESULT
My file manager being responsive when switching to it.

SOFTWARE/OS VERSIONS
Operating System: Kubuntu 20.04
KDE Plasma Version: 5.18.5
KDE Frameworks Version: 5.68.0
Qt Version: 5.12.8
Kernel Version: 5.4.0-47-generic
OS Type: 64-bit
Processors: 12 × AMD Ryzen 5 3600 6-Core Processor
Memory: 31,4 GiB of RAM

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