[kwin] [Bug 380800] High CPU usage with 'Destkop Effects' enabled

[thePanz]

https://bugs.kde.org/show_bug.cgi?id=380800

thePanz  changed:

   What|Removed |Added

 CC||thep...@gmail.com

--- Comment #3 from thePanz  ---
I can confirm the same behavior: kwin_x11 is always at 10%, while disabling the
accelleration (Ctrl+Alt-F12) it goes back to 1%/2%

System: ArchLinux
KDE Plasma: 5.10.1
KDE Frameworks: 5.35.0
Qt: 5.9
Kernel: 4.11.3-1-ARCH
OS Type: 64 Bit

Processor: i7-7500

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[kwin] [Bug 380800] High CPU usage with 'Destkop Effects' enabled

[Steven Haigh]

https://bugs.kde.org/show_bug.cgi?id=380800

--- Comment #2 from Steven Haigh  ---
The following output is from an i7 laptop with only an intel GPU. I was doing
nothing but moving the mouse around in circles over the 'systemsettings5'
window.

top - 12:12:45 up  1:24,  3 users,  load average: 0.74, 0.33, 0.20
Tasks: 223 total,   1 running, 222 sleeping,   0 stopped,   0 zombie
%Cpu(s): 13.8 us,  2.7 sy,  0.0 ni, 82.5 id,  0.3 wa,  0.4 hi,  0.3 si,  0.0 st
KiB Mem :  8077024 total,  5125184 free,  1464352 used,  1487488 buff/cache
KiB Swap:  8125436 total,  8125436 free,0 used.  5987760 avail Mem

  PID USER  PR  NIVIRTRESSHR S  %CPU %MEM TIME+ COMMAND
 3748 shaigh20   0  744544  67684  56812 S  46.5  0.8   0:07.06
systemsettings5
 1076 root  20   0  368044 101532  69928 S  11.6  1.3   1:23.75 Xorg
 1271 shaigh20   0 3239840  85740  61076 S   7.6  1.1   2:01.79 kwin_x11
 1281 shaigh20   0 3932612 280104 110536 S   0.7  3.5   0:51.55 plasmashell
 2035 shaigh20   0 1431656 267336 135888 S   0.7  3.3   2:41.00 chrome
  125 root  20   0   0  0  0 S   0.3  0.0   0:03.57
kworker/u8:4
  812 root -51   0   0  0  0 S   0.3  0.0   0:21.02
irq/30-iwlwifi
 2218 shaigh20   0 1048804 118212  68972 S   0.3  1.5   0:08.65 chrome
 3298 root  20   0   0  0  0 S   0.3  0.0   0:01.18
kworker/u8:2
 3709 shaigh20   0 1002728 122836  68264 S   0.3  1.5   0:17.03 chrome
 3747 shaigh20   0  157036   4252   3680 R   0.3  0.1   0:00.11 top

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[kwin] [Bug 380800] High CPU usage with 'Destkop Effects' enabled

[Steven Haigh]

https://bugs.kde.org/show_bug.cgi?id=380800

--- Comment #1 from Steven Haigh  ---
For the record, I have managed to get systemsettings5 to show the same level of
CPU usage on a laptop with an intel GPU.

Another point - on the first system with the nvidia card, if I have the
compositor enabled, I have observed kwin_x11 use up to 160% CPU (average of
140%) while playing a DVB-T stream within VLC. Disabling the compositor or
using Alt-Shift-F12 causes the problem to disappear completely.

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[kwin] [Bug 380800] High CPU usage with 'Destkop Effects' enabled

[Rex Dieter]

https://bugs.kde.org/show_bug.cgi?id=380800

Rex Dieter  changed:

   What|Removed |Added

 CC||rdie...@gmail.com

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