<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [IVB/HSW/BYT-M/BDW] GpuTest_v0.5_triangle performance slower by 10%~50% in fullscreen than in windowed & composited mode" href="https://bugs.freedesktop.org/show_bug.cgi?id=80705#c5">Comment # 5</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [IVB/HSW/BYT-M/BDW] GpuTest_v0.5_triangle performance slower by 10%~50% in fullscreen than in windowed & composited mode" href="https://bugs.freedesktop.org/show_bug.cgi?id=80705">bug 80705</a> from <a class="email" href="mailto:eero.t.tamminen@intel.com" title="Eero Tamminen <eero.t.tamminen@intel.com>"> Eero Tamminen</a> <pre>(In reply to Alejandro Piñeiro (freenode IRC: apinheiro) from <a href="show_bug.cgi?id=80705#c4">comment #4</a>) > (In reply to zhoujian from <a href="show_bug.cgi?id=80705#c0">comment #0</a>) > > FYI: In an unrelated test it was noticed that with DRI3, X still does > > occasionally Vsync wait although test had zeroed swap interval. ... > If Vsync were happening with fullscreen, the FPS (that is the measure of > performance in this test) would be equal to the refresh rate. So for > example, in my case 60FPS. Only if it happens for every frame. Year ago, when Vsync was disabled with *DRI3*, I was seeing some tests being synched to 120 or 180 FPS i.e. every second or third frame. > But that is not the case, but ~360 FPS. > > curious thing is that it doesn't matter the resolution, on fullscreen the > FPS are always 360FPS. This is multiple of 60FPS, and it not changing sounds like some of the frames were still synched. I would suggest checking frame timings for individual frames to see whether this is the case. > But on windowed I detected ~380 for 1920x1280, ~860 > for 1280x720 and so on. I haven't seen DRI3 sync-when-vsync-disabled issue in Windowed tests.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>