https://bugs.kde.org/show_bug.cgi?id=441140
Bug ID: 441140
Summary: Switching virtual deskops causes taskbar to hang
Plasma for several seconds
Product: plasmashell
Version: 5.22.4
Platform: Gentoo Packages
OS: Linux
Status: REPORTED
Severity: major
Priority: NOR
Component: Task Manager and Icons-Only Task Manager
Assignee: h...@kde.org
Reporter: luke-jr+kdeb...@utopios.org
CC: plasma-b...@kde.org
Target Milestone: 1.0
SUMMARY
When changing virtual desktops, Plasma hangs for several seconds.
STEPS TO REPRODUCE
1. Have lots of windows open on origin/destination virtual desktops
2. Switch virtual desktops
OBSERVED RESULT
Plasma is frozen for ~8 seconds
EXPECTED RESULT
Plasma continues working normally
perf report during virtual desktop switching a few times:
Samples: 148K of event 'cycles:u', Event count (approx.): 129861648422
Overhead Command Shared Object
Symbol
74.48% plasmashell libxcb.so.1.1.0 [.]
_xcb_map_remove
5.27% plasmashell libtaskmanager.so.5.22.0 [.]
0x0000000000067ed0
2.11% plasmashell libtaskmanager.so.5.22.0 [.]
0x0000000000067ec4
1.13% plasmashell libQt5Core.so.5.15.2 [.]
QIdentityProxyModel::index
1.08% plasmashell libQt5Core.so.5.15.2 [.]
QIdentityProxyModel::rowCount
0.74% plasmashell libQt5Core.so.5.15.2 [.]
(anonymous namespace)::convert
0.65% plasmashell libQt5Core.so.5.15.2 [.]
QAbstractProxyModel::data
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