http://bugzilla.opensuse.org/show_bug.cgi?id=1016920 http://bugzilla.opensuse.org/show_bug.cgi?id=1016920#c1 Fabian Vogt changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |cfd_s12@web.de, | |fabian@ritter-vogt.de Flags| |needinfo?(cfd_s12@web.de) --- Comment #1 from Fabian Vogt --- (In reply to P. Otato from comment #0)

There is a bug in plasmashell for Plasma versions < 5.9 https://bugs.kde.org/show_bug.cgi?id=356479

A animation in the task bar (e.g. file copying) causes a high cpu load for the plasmashell process. Because of this the system may become unresponsive. The bug has been fixed upstream but it seems it will not be backported for Plasma 5.8 by the folks at KDE. Users successfully backported this patch several weeks ago and had no problems. openSUSE Leap 42.2 (and probably 42.3) will stay with Plasma 5.8 since it is a LTS release. Therefore it would be nice to apply the patch downstream in openSUSE Leap 42.2.

We already have a very similiar patch (the workaround patch I posted in that bug report) in the package. It does basically the same and I tested that the solution accepted upstream is actually slightly worse in performance. Thus there was no reason to take the risk and swap the fix in the package. If you can verify that this bug is fixed in the KDE:Frameworks5:LTS repo, we can submit it as update. -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1016920 http://bugzilla.opensuse.org/show_bug.cgi?id=1016920#c3 --- Comment #3 from Fabian Vogt --- (In reply to Wolfgang Bauer from comment #2)

(In reply to Fabian Vogt from comment #1)

...

If you can verify that this bug is fixed in the KDE:Frameworks5:LTS repo, we can submit it as update.

That upstream patch is not yet in KDE:Frameworks5:LTS though. It has been backported to 5.8 upstream, but will only be in 5.8.6.

That is true, I mixed it up with KDE:Frameworks5 where I removed the tray icon cache. So we need a package with this fix for testing. -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1016920 http://bugzilla.opensuse.org/show_bug.cgi?id=1016920#c5 --- Comment #5 from Fabian Vogt --- (In reply to Wolfgang Bauer from comment #4)

(In reply to Fabian Vogt from comment #3)

...

So we need a package with this fix for testing.

I created one, it's available here: http://download.opensuse.org/repositories/home:/wolfi323:/branches:/KDE:/ Frameworks5:/LTS/openSUSE_Leap_42.2/

Thanks!

Shall I submit it to KDE:Frameworks5:LTS, or do we want to wait for feedback first?

What about both? :P Just make a request with a note to this bug report's state. -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1016920 http://bugzilla.opensuse.org/show_bug.cgi?id=1016920#c7 --- Comment #7 from Wolfgang Bauer --- (In reply to P. Otato from comment #6)

This bug was fixed in the currently released Plasma 5.8.6.

Yes, see comment#2.

Is it possible to backport the bug fix or update Plasma in Leap 42.2?

Did you test it as you been asked? We are waiting for your feedback. The current plan is to keep Fabian's patch instead of the upstream fix. See comment#1 and comment#4. -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1016920 http://bugzilla.opensuse.org/show_bug.cgi?id=1016920#c9 --- Comment #9 from Fabian Vogt --- (In reply to P. Otato from comment #8)

Created attachment 715262 [details] CPU history during file transfer

The problem still persists (see attachment above). For a dual-core CPU "top" shows a CPU usage of 53% for kwin_x11, 22% for plasmashell and 13% for X.

Which packages did you try? -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1016920 http://bugzilla.opensuse.org/show_bug.cgi?id=1016920#c11 --- Comment #11 from P. Otato --- Created attachment 715330 --> http://bugzilla.opensuse.org/attachment.cgi?id=715330&action=edit htop outputs using Dolphin, Krusader, cp and rsync for file transfer Okay just to make sure, here are the commands I've run: sudo zypper ref && sudo zypper patch sudo zypper ar http://download.opensuse.org/repositories/KDE:/Frameworks5:/LTS/openSUSE_Lea... Frameworks5LTS sudo zypper ref && sudo zypper dup --from Frameworks5LTS Rebooted the machine and tested file transfer with a 4GiB iso from a USB stick to my home directory via dolphin, krusader, cp and rsync. After that I've run (no conflicts this time, thanks Wolfgang for updating your repo): sudo zypper ar http://download.opensuse.org/repositories/home:/wolfi323:/branches:/KDE:/Fra... WolfgangsRepo sudo zypper ref && sudo zypper dup --from WolfgangsRepo Rebooted the machine again and tested file transfer with a 4GiB iso from a USB stick to my home directory via dolphin, krusader, cp and rsync. Results: First of all, there is no difference in CPU usage during file transfer between (Leap + Frameworks5:LTS) and (Leap + Frameworks5:LTS + home:wolfi323). CPU usage was monitored via htop and ksysguard. ksysguard always showed 100% CPU usage no matter was transfer method was used. htop instead showed a high CPU usage (>60%) for file transfer with Dolphin and Krusader and a low CPU usage (<5%) when cp or rsync was used. Please see the attachment with the output of htop. Moving files with Dolphin and Krusader also gives me an animated icon in the system tray, while cp and rsync don't. -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1016920 http://bugzilla.opensuse.org/show_bug.cgi?id=1016920#c13 P. Otato changed: What |Removed |Added ---------------------------------------------------------------------------- Summary|high cpu load for |High CPU load when copying |plasmashell [fix inside] |files --- Comment #13 from P. Otato --- (In reply to Fabian Vogt from comment #12)

...

First of all, there is no difference in CPU usage during file transfer between (Leap + Frameworks5:LTS) and (Leap + Frameworks5:LTS + home:wolfi323).

Ok, that means the upstream fix is not effective either. There's nothing we can do at this point, please open a new bug upstream and reopen this one here once a fix or workaround we can apply is available.

I'll do that. Thank you both for your attention to this matter and everything you've done.

Just to verify that you're using the right package, run

...

rpm -q --changelog plasma5-workspace | head

and make sure that the first entry starts with "Thu Feb 23 16:18:32 UTC 2017 - wbauer@tmo.at".

Yeah it does. duda@linux-22y8:~> rpm -q --changelog plasma5-workspace | head * Thu Feb 23 2017 wbauer@***.at - Remove 0001-Revert-Systray-Move-all-icon-resolution-to-dataengin.patch and add-tray-icon-cache.patch to use the upstream fix for "High load due to animated tray icons" (boo#1016920, kde#356479) * Tue Feb 21 2017 fabian@***********.de - Update to 5.8.6 * New bugfix release * For more details please see: * https://www.kde.org/announcements/plasma-5.8.6.php -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1016920 Mikhail B changed: What |Removed |Added ---------------------------------------------------------------------------- CC|push.uni@gmail.com | -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1016920 Bastian Holst changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |bastianholst@gmx.de -- You are receiving this mail because: You are on the CC list for the bug.