https://bugs.kde.org/show_bug.cgi?id=457370
Bug ID: 457370
Summary: KDE Plasma typically immediately halts from
medium-to-high workloads
Product: plasmashell
Version: 5.25.3
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: plasma-b...@kde.org
Reporter: dchme...@gmail.com
CC: k...@davidedmundson.co.uk
Target Milestone: 1.0
SUMMARY
KDE Plasma typically immediately halts from medium-to-high workloads
STEPS TO REPRODUCE
1. Open something over 10 such as preferably 15 to 20+ programs as fast as you
can, for which I suggest add panel launchers to start each in less than 1sec if
possible.
OBSERVED RESULT
KDE Plasma can't handle medium-to-high workloads. If you open enough programs
fast it may halt KDE, or at least will halt the panel and cause general
slowdown, for which same number of programs in less powerful X window managers
(WM) or desktop environments (DE) such as XFCE never halt from this and are
even usually still much faster than KDE (I don't try or compare to GNOME/MATE
because overall is among worst but would try and compare to TDE, (Ns)CDE which
are probably best after some bugfixes).
EXPECTED RESULT
Start all programs the user wants and if they open a large number don't halt
the panel--don't 'update' it which may halt it (updates being their task
manager flashing every time they have activity?) Option: opt-out of panel task
manager updating/flashing ever.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Slackware64 from Slamd64 (unofficial) to Slackware64 13 to
15+current GNU/Linux, sometimes FreeBSD UNIX 7 to 13.1
KDE Plasma Version: 4, 5 to 5.25.3
KDE Frameworks Version: 4, 5 to 5.96.0
Qt Version: 4, 5 to 5.15.5
ADDITIONAL INFORMATION
KDE3 was fine but halting has always been an intermittent critical problem from
Plasma 4 to 5 current version, and Slackware even delayed KDEP5 (maybe years)
because people were saying wasn't production-ready (still unsure is 100%
production-ready). In this situation if you kill plasmashell and restart, it
often immediately (even with 20+ programs) works well (but typically rearranges
programs out-of-order you moved them in) but occasionally you may lose all
programs that were minimzed to system tray. If you don't kill plasmashell you
may wait one-half to two hours (I haven't waited longer but went away and came
back, killed plasmashell) or more to see if it started responding to user yet.
list of what I start (and usual order) which if something over 10 and almost
always if 15+ and so far always 20+ always halt KDE/panel
Konsole (always)
Dolphin (always)
KATE (always)
NotepadQQ (sometimes)
Libre Office (occasionally or always later after hours/days network programs)
MComix (occasionally or always later after network programs)
Okular (occasionally or always later after network programs)
XMMS1 or Open Cubic Player or DeadBeef (occasionally or usually later after
network programs)
Thunderbird Mail (always if using any neworking)
Pan NNTP newsreader (usually if using any networking. Almost 1,000 NNTP
news-/discussion-groups)
HexChat Internet Relay Chat (almost always if using any networking. 10+
servers/networks and 120+ channels)
Pidgin instant messaging (IM) (usually or almost always later after web
browsers. Almost 15+ accounts )
Mozilla/Pale_Moon web browser (almost always)
Firefox web browser (usually)
Chromium web browser (almost always if using any networking)
Konqueror and/or Falkon web browsers (occasionally or always later in any short
session if using any networking)
Element matrix IM (usually)
Discord IM (usually)
Slack IM (usually)
ICQ IM (occasionally)
Skype IM (usually)
Jitsi-meet IM (occasionally)
Transmission-QT or GTK (almost always or always within 24hrs)
Nicotine+ (almost always or always within 24hrs)
EiskaltDC++ (lmost always or always within 24hrs)
Geeqie and/or Eye of MATE (occasionally or always after hours/days)
GIMP (occasionally or often later)
KolourPaint (occasionally)
InkScape (occasionally)
I only start (or even think of) some less-used ones minutes/hours/days later.
If I start first four slowly then subsequent more slowly, waiting some tens
seconds or even 1+ minutes, I almost never have the problem.
A typical session always has 10 programs above; usually 15+, and if I start
daytime with IM/IRC then 20+ and at least if it doesn't crash and then
writing/programming & graphics & audio later, then maybe 30+ including
miscellaneous/testing (utilities, compiling, audio/trackers, p2p, trying
others).
Of course, it's almost always on three monitors (1600x1200, 4K, 1920x1080
latter also being drawing pad) unless I have a problem and quit soon (then only
4K).
This isn't even including at least hours later I eventually start doing
scientific computing & compiling with 24 to 28 of 32 5950X threads with 64GB
RAM, so in theory should be alternatively be able to run multiple KDEP5
instances with (if was optimized more) no problems.
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