How many KDE sessions are you running? Maybe post systemctl status run as root?
Thanks for replying! Only one session. Running
systemctl status
as root gave me this result. I could only find one/usr/bin/kwin_x11 --replace
(ID: 4426) entry, though when I can see many others: 4426, 4427, 4429, 4430, 4433, 4434, 4436, 4442, 4443, 4444, 4445, 5871 10277, 10278, 10279, 12222, 12223, 12224, 12225, 12226, 12227 and 12228.You know I bet those are just the threads kwin is using, since memory usage is all the same. Linux threads are just processes that share everything. You may be able to look at your top (htop?) Options to show threads separately or together?
@mvirts @Moshpirit Yep, htop shows threads in green, so all of those shown in the image (except the first one probably) are threads. You can turn off display of threads in the settings.
Or, if you enable tree display, the threads will display as children of their process.