$ optirun /opt/VirtualGL/bin/glxspheres64
Polygons in scene: 62464
Visual ID of window: 0x21
Context is Direct
OpenGL Renderer: GeForce GT 540M/PCIe/SSE2
76.099473 frames/sec - 105.544185 Mpixels/sec
75.788047 frames/sec - 105.112262 Mpixels/sec
76.467093 frames/sec - 106.054046 Mpixels/sec
76.098372 frames/sec - 105.542658 Mpixels/sec
102.976897 frames/sec - 103.551140 Mpixels/sec
147.906111 frames/sec - 102.310207 Mpixels/sec
147.965824 frames/sec - 102.351511 Mpixels/sec
147.551485 frames/sec - 102.064904 Mpixels/sec
147.533706 frames/sec - 102.052605 Mpixels/sec
147.885092 frames/sec - 102.295668 Mpixels/sec
147.306170 frames/sec - 101.895213 Mpixels/sec
147.359081 frames/sec - 101.931813 Mpixels/sec
147.324709 frames/sec - 101.908037 Mpixels/sec
147.334094 frames/sec - 101.914529 Mpixels/sec
147.884088 frames/sec - 102.294973 Mpixels/sec
146.441623 frames/sec - 101.297185 Mpixels/sec
192.261639 frames/sec - 62.818489 Mpixels/sec
399.075644 frames/sec - 71.905450 Mpixels/sec
376.931521 frames/sec - 67.915521 Mpixels/sec
379.589713 frames/sec - 68.394474 Mpixels/sec
385.194502 frames/sec - 69.404345 Mpixels/sec
382.909848 frames/sec - 68.992696 Mpixels/sec
432.273470 frames/sec - 47.407547 Mpixels/sec
671.333779 frames/sec - 26.488817 Mpixels/sec
675.692223 frames/sec - 26.660788 Mpixels/sec
618.817201 frames/sec - 21.038019 Mpixels/sec
676.845244 frames/sec - 4.646956 Mpixels/sec
802.541834 frames/sec - 1.765592 Mpixels/sec