CPU consumtion by kglobalaccel / Xorg (was: Fwd: xorg-server-21.1.8_2,1 && key Control_L)

[Matthias Apitz]

El día lunes, septiembre 18, 2023 a las 10:41:52p. m. +0200, Michael Gmelin escribió:

> 
> 
> > On 18. Sep 2023, at 18:03, Matthias Apitz <guru at unixarea.de> wrote:
> > 
> > El día lunes, septiembre 18, 2023 a las 11:36:17a. m. +0200, Matthias Apitz escribió:
> > 
> >>> El día lunes, septiembre 18, 2023 a las 11:08:16 +0300, Gleb Popov escribió:
> >>> 
> >>> On Mon, Sep 18, 2023 at 10:42 AM Matthias Apitz <guru at unixarea.de> wrote:
> >>>> 
> >>>> 
> >>>> I investigated the problem described below further and modified
> >>>> ~/.xinitrc to not start plasma, but twm and one xterm. The issue depends
> >>>> clearly on KDE5. On KeyPress event of Control_L the two processes
> >>>> Xorg and kglobalaccel jump in top on the list, Xorg with 30++%.
> >>>> 
> >>>> If one uses multiple time Control_L + TAB to rotate between the virtual
> >>>> desktops, this is lazy at the beginning and later the requests get
> >>>> somehow stacked nd re-played by its own like a movie.
> >>>> 
> >>>> This is not with my older laptop installation with ports from end of
> >>>> 2020 (which have been bleeding edge at this time).
> >>>> 
> >>>> Should I file a bug in bugs.kde.org or is that somehow a known issue?
> >>>> 
> >>>> Thanks
> >>> 
> >>> Probably you have something strange bound to this shortcut. Does the
> >>> problem exist for a newly created user (with empty ~/.config and
> >>> ~/.cache) ?
> >> 
> >> The trees ~/.config and ~/.cache have been copied from the 2020's system
> >> which is still in use. But I will follow your advice and test with a
> >> newly created user.
> > 
> > I created a new user 'test', did login as 'test', copied my ~guru/.xinitrc
> > to ~/.xinitrc, started KDE with 'startx' and started on the empty desktop
> > 'Konsole' from the Application launcher and with 'Konsole' the command
> > 'top'. Using the key 'Control_L' a few times, let's say 10 times in 10
> > seconds, brings the proc Xorg to 60% and kglobalaccel to 20% CPU utilization.
> > 
> > Please let me know, if I could check something.
> > 
> 
> Could you share the content of your .xinitrc (excuse if you had before).

It's attached. There is also nothing fancy configured for the desktop
switch. Each new desktop just moves in from right to the left. I have
configured 4 virtual desktops and from the fourth it cycles back to the
first.

	matthias

-- 
Matthias Apitz, ✉ guru at unixarea.de, http://www.unixarea.de/ +49-176-38902045
Public GnuPG key: http://www.unixarea.de/key.pub
-------------- next part --------------
#
# test section to not boot KDE
#
# setxkbmap de -option terminate:ctrl_alt_bksp
# twm &
# xterm -fn 10x20
# exit
#
# end of test section

#
setxkbmap de -option terminate:ctrl_alt_bksp
xrandr --output default --mode 1366x768
/usr/local/bin/xbindkeys

# Trackpad section
#
device="Cypress APA I2C Trackpad"
#
xinput set-prop "$device" "libinput Tapping Enabled" 1
#
# for those who like "natural" scrolling:
#
xinput set-prop "$device" "libinput Natural Scrolling Enabled" 1
#
# this gives three buttons in the lower part of the TP:
#
xinput set-prop "$device" "libinput Middle Emulation Enabled"  0
#
#
#  Trackpad layout (see man cyapa)
#
#                       2/3               1/3
#              +--------------------+------------+
#              |                    |   Middle   |
#              |                    |   Button   |
#              |       Left         |            |
#              |      Button        +------------+
#              |                    |   Right    |
#              |                    |   Button   |
#              +--------------------+............|
#              |     Thumb/Button Area           | 15%
#              +---------------------------------+
# see also:
# https://wayland.freedesktop.org/libinput/doc/latest/clickpad-softbuttons.html
#
# end of Trackpad section


#
# startplasma-x11
#
echo .xinitrc-StartKDE > startkde.log
exec ck-launch-session startplasma-x11 \
  2>&1 | while read line; do echo -n "$(date '+%T'): "; echo $line ; test "$line" = "startkde: Done." && exit ; done | tee -a startkde.log