https://bugs.kde.org/show_bug.cgi?id=502850
Bug ID: 502850
Summary: big number of loop devices freezes plasma
Classification: Plasma
Product: plasmashell
Version: 6.3.4
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Activities in general
Assignee: plasma-b...@kde.org
Reporter: adrian-harko-3+bugs.kde....@proton.me
CC: ivan.cu...@kde.org
Target Milestone: 1.0
Created attachment 180294
--> https://bugs.kde.org/attachment.cgi?id=180294&action=edit
reproducer script
SUMMARY
i have a program running which uses lots (>20k) loop devices.
after starting the program the desktop does not work anymore.
switching windows with alt-tab works like before.
but clicking the "K" button is ignored.
top shows that: (for ~10k loop devices)
kded6 uses 100% cpu and the ram usage increases sharply (>3GB)
plasmashell goes to 200% cpu and uses more ram (>5GB)
after some time (~15m) it becomes responsive again.
but big ram usage continues
i attach a reduced testcase script
it attaches loop devices and should very easily show the problem
STEPS TO REPRODUCE
1. run the attached script or open lots of loop devices
OBSERVED RESULT
kde is not responsive any more
EXPECTED RESULT
attaching of loop devices should not disturb kde in any kind
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: 6.3.4
KDE Plasma Version: 6.3.4
KDE Frameworks Version: 6.12.0
Qt Version: 6.9.0
ADDITIONAL INFORMATION
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