https://bugs.kde.org/show_bug.cgi?id=371889
--- Comment #14 from Enrico Tagliavini <enrico.tagliav...@gmail.com> --- Interesting new discovery. Yesterday and today the CPU usage of plasma was quite more tame than usual. I have to digress a bit here, sorry: it's quite a long time I have two identical panels in my desktop, one per monitor. The reason is the infamous problematic multi screen support. If I was booting the laptop without an external monitor attached there was quite an high chance (around 50%) that my panel was not displayed. So I added a second one and this worked the problem around, I was getting one of the two. [end of digression]. With 5.8 multi screen situation improved, and I'm hopeful I can actually remove the second panel and live with only one. So I removed the second panel yesteday morning. Today I was a bit surprised because, while the plasma CPU usage increased over time it increased at a slower peace. So I added a second (default) panel. Plasmashell exhausted the system memory in a matter of second (for a total of 10 GB, the rest was already in use by other stuff) [23477.201126] Out of memory: Kill process 2358 (plasmashell) score 535 or sacrifice child [23477.201134] Killed process 2358 (plasmashell) total-vm:19426516kB, anon-rss:10795480kB, file-rss:0kB, shmem-rss:28452kB [23477.682638] oom_reaper: reaped process 2358 (plasmashell), now anon-rss:0kB, file-rss:0kB, shmem-rss:28452kB I started a new one, the second panel was there. I sent myself a message to trigger the telepathy icon in the systray (I had two of them now), issue appeared quite quickly. I removed the telepathy notification and also the second panel. CPU usage of plasma is still very high. So I think this is quite an important condition to reproduce the issue: have more than one panel. I'm not sure if some of the widgets are more involved than others, but I guess the systray could be a good start. That however is not involved at all in the window switching, which would point to the task manager instead. In my testing I had two of both. -- You are receiving this mail because: You are watching all bug changes.