[winswitch] windows xpra client CPU usage

[Thomas Esposito]

On Thu, Nov 17, 2016 at 12:21 AM, Antoine Martin <antoine at nagafix.co.uk>
wrote:

> Please don't top post.
>
> On 17/11/16 12:14, Thomas Esposito wrote:
> > I'm pretty sure that I have audio disabled on the server side,
> There are 3 possible values for the "speaker" option: on, off, disabled.
> If you disable it server side, the client cannot enable it.
>
> > but I'll check again tomorrow.
> >
> > Do I have to do anything special to disable audio
> > on the client side?
> There are many ways of doing this on the client side, you can add:
> * "--speaker=off" to you command line, as a one-off.
> * "speaker=off" to your connection file if you use one (for that host)
> * "speaker=off" to your user settings (affects all connections)
> * "speaker=off" to your global xpra settings (affects all users)
> * turn it off using the system tray at runtime
>

Both speaker and microphone are set to disabled. Accordingly, they are both
"grayed out" on the client because they are disabled on the server.
Nevertheless, I still have a constant CPU usage of 5% to 7%. I don't know
if this matters, but since I have a reasonable high-bandwidth connection to
the server, I'm using zlib/lz4/lzo encoding which seems to result in
quicker response times.

Client version is beta 1.0 r14228, running on Windows 7.

Server is beta 1.0 r14232 running on RHEL 6.6.

FWIW, I observed the same behavior on 0.17.5.


> Cheers
> Antoine
>
>
>
> >
> >
> > On Nov 16, 2016 9:27 PM, "Antoine Martin via shifter-users"
> > <shifter-users at lists.devloop.org.uk
> > <mailto:shifter-users at lists.devloop.org.uk>> wrote:
> >
> >     On 16/11/16 22:41, Thomas Esposito via shifter-users wrote:
> >     > My Xpra-Launcher.exe process is ALWAYS using from 5% to 10% of my
> CPU
> >     > capacity, even when my X applications are TOTALLY idle (i.e.
> >     windows are
> >     > out of focus and/or no redrawing from X clients).
> >     My guess is that sound is enabled, sound forwarding uses a stream and
> >     will consume network and CPU even when no sound is being played.
> >
> >     > This is a HUGE increase in CPU usage (and heat generation) on my
> >     laptop
> >     > relative to when I'm just doing simple browsing and email. For
> >     example, if
> >     > i'm just browsing and reading/writing email, my total CPU usage
> >     stays under
> >     > 1% to 2% and the laptop stays cool with the fan off. If I add the
> Xpra
> >     > client to this, even though I'm not interacting with the X
> application
> >     > windows and they are not redrawing, my laptop starts getting hot
> >     and the
> >     > fan turns on. Note this is only with a single X application window
> >     running.
> >     Without sound, there should not be any network or CPU usage unless
> the
> >     application's window is refreshing.
> >     (bar ping packets every few seconds, but those are tiny)
> >
> >     > In comparison, the TigerVNC viewer and x2go CPU usage is
> >     effectively 0% if
> >     > the windows are not updating.
> >     TigerVNC does not do sound, or printing, and many other things!
> >
> >     Cheers
> >     Antoine
> >     _______________________________________________
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> >     shifter-users at lists.devloop.org.uk
> >     <mailto:shifter-users at lists.devloop.org.uk>
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> >     <http://lists.devloop.org.uk/mailman/listinfo/shifter-users>
> >
>
>