Re: Xfce 4.12 to 4.14: high Xorg CPU usage

[Stefan Pietsch]

On 27.08.19 22:24, Ben Caradoc-Davies wrote:
> On 28/08/2019 01:01, Stefan Pietsch wrote:
>> I upgraded Xfce to 4.14 recently (Debian unstable) and noticed slightly
>> delayed rendering of UI elements.
>> Firefox and Thunderbird behave sluggishly and CPU usage by Xorg is
>> significantly higher as compared to Xfce 4.12.
>> Did anyone who is using Xfce 4.14 observe similar effects?
> 
> Does top/htop show any process burning CPU?

There was no single process burning a CPU core. As I wrote in my answer
to the list, Xfce display compositing caused the load.

Re: Xfce 4.12 to 4.14: high Xorg CPU usage

[Sven Hartge]

Stefan Pietsch  wrote:
> On 27.08.19 17:04, Sven Hartge wrote:
>> Stefan Pietsch  wrote:

>>> I upgraded Xfce to 4.14 recently (Debian unstable) and noticed
>>> slightly delayed rendering of UI elements.
>> 
>>> Firefox and Thunderbird behave sluggishly and CPU usage by Xorg is
>>> significantly higher as compared to Xfce 4.12.
>> 
>>> Did anyone who is using Xfce 4.14 observe similar effects?
>> 
>> Have you tried switching off compositing via Window Manager Tweaks in
>> the XFCE settings?

> After disabling display compositing the issue is gone.
> Is this a bug or does it work as intended?

I don't know. You have to ask the Xfce mainainers. I'd just file a bug
and let them sort this out.

Grüße,
Sven.

-- 
Sigmentation fault. Core dumped.

Re: Xfce 4.12 to 4.14: high Xorg CPU usage

[Stefan Pietsch]

On 27.08.19 17:04, Sven Hartge wrote:
> Stefan Pietsch  wrote:
> 
>> I upgraded Xfce to 4.14 recently (Debian unstable) and noticed
>> slightly delayed rendering of UI elements.
> 
>> Firefox and Thunderbird behave sluggishly and CPU usage by Xorg is
>> significantly higher as compared to Xfce 4.12.
> 
>> Did anyone who is using Xfce 4.14 observe similar effects?
> 
> Have you tried switching off compositing via Window Manager Tweaks in
> the XFCE settings?

After disabling display compositing the issue is gone.
Is this a bug or does it work as intended?

Re: Xfce 4.12 to 4.14: high Xorg CPU usage

[Ben Caradoc-Davies]

On 28/08/2019 01:01, Stefan Pietsch wrote:

I upgraded Xfce to 4.14 recently (Debian unstable) and noticed slightly
delayed rendering of UI elements.
Firefox and Thunderbird behave sluggishly and CPU usage by Xorg is
significantly higher as compared to Xfce 4.12.
Did anyone who is using Xfce 4.14 observe similar effects?


Does top/htop show any process burning CPU?

I mask the colord service because I do not need it, and after upgrading 
from Xfce 4.12 to Xfce 4.14, my session acquired an xiccd process that 
sat burning 100% of one CPU (unhappy about not being able to contact 
colord?). I disabled it from my Xfce session in Settings / Session and 
Startup / Application Autostart, logged in and out, and the problem went 
away. I do not save my sessions.


Other than needing to use ~/.config/gtk-3.0/settings.ini to force all 
Xfce GTK 3 elements to use the correct font size (the setting is ignored 
for some elements), everything else works for me as well as in 4.12 and 
performance is satisfactory.


Kind regards,

--
Ben Caradoc-Davies 
Director
Transient Software Limited 
New Zealand

Re: Xfce 4.12 to 4.14: high Xorg CPU usage

[Sven Hartge]

Stefan Pietsch  wrote:

> I upgraded Xfce to 4.14 recently (Debian unstable) and noticed
> slightly delayed rendering of UI elements.

> Firefox and Thunderbird behave sluggishly and CPU usage by Xorg is
> significantly higher as compared to Xfce 4.12.

> Did anyone who is using Xfce 4.14 observe similar effects?

Have you tried switching off compositing via Window Manager Tweaks in
the XFCE settings?

Grüße,
Sven.

-- 
Sigmentation fault. Core dumped.

Xfce 4.12 to 4.14: high Xorg CPU usage

[Stefan Pietsch]

Dear list,

I upgraded Xfce to 4.14 recently (Debian unstable) and noticed slightly
delayed rendering of UI elements.

Firefox and Thunderbird behave sluggishly and CPU usage by Xorg is
significantly higher as compared to Xfce 4.12.

Did anyone who is using Xfce 4.14 observe similar effects?


Regards,
Stefan

xorg cpu usage

[debuser]

After running X for a few hours, the xorg server starts to use around
20% of the CPU.  Is that not rather high?  The computer is a laptop
running sid.

Here is an extract from a typical htop display (formatted to make it
less wide), sorted by CPU usage:

CPU[|||   29.0%] Tasks: 246 total, 1 running
Mem[||208/486MB] Load average: 0.56 0.42 0.30 
Swp[ 153/1463MB] Uptime: 3 days, 22:43:19

PID USER  VIRT   RES   SHR S CPU% MEM%   TIME+  Command
  27837 root  171M 20276  4908 S 25.0  4.1 37:05.50 /usr/bin/X11/X -nolisten tcp
  29508 nick  2516  1308   968 R  2.0  0.3  0:01.03 htop
  27990 nick 11188  5928  3176 S  1.0  1.2  2:31.75 xmobar
  27918 nick 12052  5368  2348 S  0.0  1.1  0:01.71 xterm -class UXTerm -title u

X clients are typically uxterm, iceowl, emacsclient and iceweasel.
Even after closing all X clients except the desktop (xmonad + xmobar)
the X server cpu% remains about the same.  The computer is running sid
with kernel 2.6.31-1-686.  The device driver in its xorg.conf is
intel.

The graphics chip via lspci:

   00:02.0 VGA compatible controller: Intel Corporation 82852/855GM
   Integrated Graphics Device (rev 02)
   00:02.1 Display controller: Intel Corporation 82852/855GM Integrated
   Graphics Device (rev 02)

If I quit X and restart, the cpu settles down to around 3% as shown by
htop.  But it increases again after an hour or two, with accompanying
fan noise.  So far I cannot tell if anything in particular triggers
the increase.

-- 
Nick


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Xorg cpu usage

[gustavo halperin]

Hello

I live the past night the Laptop (Toshiba Portege R100, Pentium M) on 
during all the night and in the morning the temperature was 67C. I take 
this information from a file /proc/acpi/thermal_zone/THRM/temperature. 
At the same time the Xorg process was using 95% of the CPU.
 After few minutes of use the computer, the system back to normal 
temperature (between 49-51C), but What happens ? Why if I live the Linux 
without use for some hours the Xorg came to use all the CPU ??


 Thank you in advance,
   Gustavo Halperin


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Re: Xorg cpu usage

[Lars Boegild Thomsen]

gustavo halperin wrote:

 At the same time the Xorg process was using 95% of the CPU.
 After few minutes of use the computer, the system back to normal
 temperature (between 49-51C), but What happens ? Why if I live the Linux
 without use for some hours the Xorg came to use all the CPU ??

Did you have any fancy screen savers enabled?  Some of those can take
quite a lot CPU (albeit at a very low priority) and I have seen a few of
them have serious memory leaks.

-- 
Lars


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Re: Xorg cpu usage

[gustavo halperin]

Noup, I don't use screen savers, more over the Laptop was close, I mean 
the computer 'On' but with the screen close.


 Thank you,
 Gustavo Halperin
Lars Boegild Thomsen wrote:


gustavo halperin wrote:

 


At the same time the Xorg process was using 95% of the CPU.
After few minutes of use the computer, the system back to normal
temperature (between 49-51C), but What happens ? Why if I live the Linux
without use for some hours the Xorg came to use all the CPU ??
   



Did you have any fancy screen savers enabled?  Some of those can take
quite a lot CPU (albeit at a very low priority) and I have seen a few of
them have serious memory leaks.

 




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