xpra-client of shadow has a constant ~35% CPU

[totaam]

Issue migrated from trac ticket # 2250

component: client | priority: major | resolution: invalid

2019-04-03 11:01:10: stdedos created the issue

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Shadow-server:
2019-04-03 11:40:49,790 xpra GTK2 shadow version 2.5-[r22096](../commit/7ef6c348c85fc4b162b480215df86cbfa2dba02e) 64-bit
2019-04-03 11:40:49,794  running with pid 18889 on Linux Ubuntu 16.04 xenial
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Client:
set "XPRA_EXECUTABLE=C:\Users\stavros.ntentos\Documents\xpra-clients\Xpra-Client-Python3-x86_64_2.5-[r22135](../commit/9632bbcf26034732fde214891f741018f63048a5)"
2019-04-03 11:40:51,056 Python/GTK3 Microsoft Windows 10 aero client version 2.5-[r22135](../commit/9632bbcf26034732fde214891f741018f63048a5) 64-bit

Xpra-Client-Python3-x86_64_2.5-[r22135](../commit/9632bbcf26034732fde214891f741018f63048a5)\xpra_cmd" shadow ssh://user@ip/0  --clipboard=no --opengl=no --desktop-scaling=0.75 --webcam=no --speaker=off --microphone=off

Which is also weird percentage, since I have an i7-3540M (4 logical cores) which means 1-and-8% processors

I am not sure what else to report :/ shadow server was doing "basic stuff" (move mouse and workspaces around etc) and collecting again debugs for #2249

[totaam]

2019-04-03 11:01:33: stdedos uploaded file xpra-ProcessHacker_2019-04-03_12-06-37.png (65.7 KiB)

[totaam]

2019-04-03 11:02:10: stdedos uploaded file display-0.log (7.3 KiB)

[totaam]

2019-04-03 15:17:21: antoine changed owner from antoine to stdedos

[totaam]

2019-04-03 15:17:21: antoine commented

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Can you try to change the refresh delay (in milliseconds):

XPRA_SHADOW_REFRESH_DELAY=200 xpra shadow :0

To see if the CPU usage is related to the refresh rate.

From your log I see:

Xpra GTK2 shadow server version 2.5-[r22096](../commit/7ef6c348c85fc4b162b480215df86cbfa2dba02e) 64-bit

That's older than 2.5 final, why is that?

[totaam]

2019-04-03 15:41:59: stdedos commented

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Replying to [comment:1 Antoine Martin]:

From your log I see:

Xpra GTK2 shadow server version 2.5-[r22096](../commit/7ef6c348c85fc4b162b480215df86cbfa2dba02e) 64-bit

That's older than 2.5 final, why is that?

No idea :/ as per #2246 I only had whatever this

/etc/apt$ grep -TrinP 'xpra|winswitch'
sources.list.d/xpra.list.save:   1     :deb https://xpra.org/beta/ xenial main
sources.list.d/xpra.list:   1  :deb https://xpra.org/beta/ xenial main

gave me as the latest package (I run apt-get update quite frequently).

I only updated minutes after my last #2246 comment.

[totaam]

2019-04-03 15:45:58: antoine commented

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As per #2246, the beta repository is a supplemental one. Add the stable repository.

[totaam]

2019-05-17 09:00:20: stdedos commented

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It seems that, with the changed command line, a load of ~37% drops to ~29-30%.

Your logic makes sense

[totaam]

2019-05-17 09:00:30: stdedos uploaded file display-%3A0.log (2.9 KiB)

[totaam]

2019-05-17 09:04:46: antoine changed status from new to closed

[totaam]

2019-05-17 09:04:46: antoine set resolution to invalid

[totaam]

2019-05-17 09:04:46: antoine commented

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Closing as invalid: the shadow server users polling, which consumes a lot of CPU.