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 > https://lists.x2go.org/listinfo/x2go-user _______________________________________________ x2go-user mailing list x2go-user@lists.x2go.org https://lists.x2go.org/listinfo/x2go-user
