Ok, so jogl does not use java2d. As I expected...
Uli
On Tue, Jun 2, 2020 at 12:00 PM Johannes Töger <johannes.to...@med.lu.se> wrote:
>
> Should be "with and without transparency"...
>
>
> —
> Johannes Töger
>
> Associate Senior Lecturer
> Cardiac MR Group
> Department of Clinical Sciences Lund, Clinical Physiology
> Lund University, Sweden
>
> -----Original Message-----
> From: x2go-user <x2go-user-boun...@lists.x2go.org> On Behalf Of Johannes Töger
> Sent: Tuesday, June 2, 2020 11:58
> To: Ulrich Sibiller <ul...@gmx.de>
> Cc: x2go-user@lists.x2go.org
> Subject: Re: [X2Go-User] Suspending sessions causes performance slowing down
>
> I did some quick benchmarks by rotating a simple 3D model with and without
> benchmarks, see script at the end. Transparency is turned off by setting
> alpha = 1.
>
> Baseline:
> Without transparency: 71±11 ms per frame With transparency: 781±112 ms per
> frame
>
> Using export _JAVA_OPTIONS=-Dsun.java2d.xrender=true:
> Without transparency: 69±12 ms per frame With transparency: 771±110 ms per
> frame
>
>
> So within the measurement variance.
>
>
>
>
> function matlab_graphics_perf_test
>
> Nang = 50;
> azvec = linspace(-180, 180, Nang) + 45;
> el = 27;
>
> figure(9)
>
> [x,y,z] = peaks;
> alpha = 0.5;
> surf(x,y,z, 'FaceAlpha', alpha)
> axis vis3d
>
> Tvec = zeros(size(azvec));
>
> for azloop = 1:length(azvec)
> tic
> view([azvec(azloop) el])
> drawnow
> Tvec(azloop) = toc;
> end
>
> fprintf('Average frame time: %g ± %g s\n', mean(Tvec), std(Tvec));
>
>
> end
>
>
> —
> Johannes Töger
>
> Associate Senior Lecturer
> Cardiac MR Group
> Department of Clinical Sciences Lund, Clinical Physiology Lund University,
> Sweden
>
> -----Original Message-----
> From: Ulrich Sibiller <ul...@gmx.de>
> Sent: Tuesday, June 2, 2020 11:04
> To: Johannes Töger <johannes.to...@med.lu.se>
> Cc: h i <qpile...@outlook.com>; x2go-user@lists.x2go.org
> Subject: Re: [X2Go-User] Suspending sessions causes performance slowing down
>
> Usually you can instruct java to use xrender by calling java with
> "-Dsun.java2d.xrender=true" or run "export
> _JAVA_OPTIONS=-Dsun.java2d.xrender=true" prior to starting the java
> application. You can also configure that globally:
> https://serverfault.com/questions/270924/setting-java-runtime-setting-for-all-users-on-a-client-pc
>
> This generally should reduce the number of pixmap related calls. But I don't
> know if it will have any effect on jogl.
>
> Uli
>
> On Tue, Jun 2, 2020 at 10:47 AM Johannes Töger <johannes.to...@med.lu.se>
> wrote:
> >
> > I can answer about the GUI toolkit. I was debugging MATLAB performance
> > issues last week so I looked into this.
> >
> > Matlab uses the jobamp/jogl framework. https://jogamp.org/jogl/www/
> >
> > In my Ubuntu/x2go/MATE setup, it falls back on a "software OpenGL" mode,
> > which actually looks like MESA/Gallium software rendering:
> >
> > In Matlab:
> > >> opengl info
> > Version: '2.1 Mesa 17.1.3'
> > Vendor: 'Brian Paul'
> > Renderer: 'Mesa X11'
> > MaxTextureSize: 16384
> > Visual: 'Visual 0x61, (RGBA 32 bits (8 8 8 8), Z
> > depth 16 bits, Hardware acceleration, Double buffer, Antialias 0 samples)'
> > Software: 'true'
> > HardwareSupportLevel: 'none (known graphics driver issues)'
> > SupportsGraphicsSmoothing: 0
> > SupportsDepthPeelTransparency: 1
> > SupportsAlignVertexCenters: 0
> > Extensions: {152×1 cell}
> > MaxFrameBufferSize: 16384
> >
> >
> >
> > johannes@compute-2:/usr/local/MATLAB/R2019a/sys/opengl/lib/glnxa64$ ls
> > -1 C11ThreadEmulationLibraryLicense.rights
> > EXTHeaderLicense.rights
> > GalliumCodeLicense.rights
> > GLXClientCodeLicense.rights
> > libGL.so.1
> > libGL.so.1.6.0
> > libGLU.rights
> > libGLU.so.1
> > libGLU.so.1.3.1
> > MesaDeviceDriversLicense.rights
> > MesaLicense.rights
> >
> >
> > —
> > Johannes Töger
> >
> > Associate Senior Lecturer
> > Cardiac MR Group
> > Department of Clinical Sciences Lund, Clinical Physiology Lund
> > University, Sweden
> >
> > -----Original Message-----
> > From: x2go-user <x2go-user-boun...@lists.x2go.org> On Behalf Of Ulrich
> > Sibiller
> > Sent: Tuesday, June 2, 2020 09:15
> > To: h i <qpile...@outlook.com>
> > Cc: x2go-user@lists.x2go.org
> > Subject: Re: [X2Go-User] Suspending sessions causes performance
> > slowing down
> >
> > On Tue, Jun 2, 2020 at 3:04 AM h i <qpile...@outlook.com> wrote:
> > > I ran a few tests and see the issue is GUI related in our case. It seems
> > > to speak to the 2nd reason for sleep you described regarding the sending
> > > of pixmaps.
> > >
> > > I ran two MATLAB scripts. Both including the same steps. However, 1
> > > script suppressed pop-windows tracking the script status. The 2nd
> > > script did not suppress the pop-up windows displaying
> >
> > What gui toolkit is matlab using?
> >
> > > real-time status. The 1st script involving command lines ran in the same
> > > amount whether the session was active or suspended. No reduction of time
> > > or CPU usage. The 2nd script took much longer and CPU was reduced
> > > significantly while the session was suspended.
> > >
> > > A few questions:
> > >
> > > for X2GO_NXOPTIONS="sleep=0", what does 0 represent in time. If I set the
> > > value to 1000, what would that mean?
> >
> > This defines how long nxagent should sleep. The unit should be microseconds
> > but there's a ticket for doublechecking that because it looks like a mixup
> > happened during implementation
> > (https://github.com/ArcticaProject/nx-libs/issues/928).
> >
> > > Is the idle-nice-level=19 for suspended sessions the default setting?
> >
> > As I said I don't know the superreniver feature in detail.
> >
> > > Would the supernicer setting override the x2goagent sleep option setting?
> >
> > no, they are two different things.
> >
> > > What would be an example command for the -irlimit option in
> > > x2goagent.options file.
> >
> > see https://github.com/ArcticaProject/nx-libs/issues/796
> >
> > Uli
> > _______________________________________________
> > x2go-user mailing list
> > x2go-user@lists.x2go.org
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