On 11-01-31 09:52 AM, David Björkevik wrote: > I have an installation of VirtualGL using Cendio Thinlinc on an 8 core > machine with Nvidia Quadro graphics. > > Performance is excellent except when our application uses "picking" to > detect what part of the OpenGL scene the user is clicking at. > > After picking, the program hangs for about a second with no regard to > the size of the model itself. When halting with GDB, the backtrace shows > the
... ? > I tried the VGL_PROFILE option. Standard values for Readback are in the > 300-600 Mpixels/sec range. However, when picking, this drops to<1 > Mpixels/sec. > > Any pointers or ideas? VGL_TRACE might give some clues if you could identify which calls were stalling, but I think timestamps would need to be added for that. A recent WireShark trace of the X connection might also give a clue of what's slowing down. (E.g. high latency to X server, lots of round-trip requests when picking, which wouldn't be related to VGL at all) -Nathan -- Nathan Kidd OpenText, Connectivity Solutions Group ------------------------------------------------------------------------------ Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! Finally, a world-class log management solution at an even better price-free! Download using promo code Free_Logger_4_Dev2Dev. Offer expires February 28th, so secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsight-sfd2d _______________________________________________ VirtualGL-Users mailing list VirtualGL-Users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/virtualgl-users
