<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - Strange slow-fast performance latching between gfxbench3 (and 4) test runs" href="https://bugs.freedesktop.org/show_bug.cgi?id=103314#c7">Comment # 7</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - Strange slow-fast performance latching between gfxbench3 (and 4) test runs" href="https://bugs.freedesktop.org/show_bug.cgi?id=103314">bug 103314</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 Tvrtko Ursulin from <a href="show_bug.cgi?id=103314#c6">comment #6</a>) > On that machine I have the Intel DDX with DRI 3 turned on, and Mesa confirms > it is using DRI 3. > > Offscreen version of the test does not seem to suffer from this problem. > > So I guess user error of some sort? I think the dual results issue we've discussed is still real. You could test also with modesetting, to make sure blitter usage really goes away, and if yes, whether that makes the performance results more consistent (mostly/partly CPU bound tests like gl_driver are still going to have at least 5x more variance than GPU bound tests have). Even if the cause would be Intel DDX instead of Mesa, it's quite suspicious that it would randomly use blitter for frame copies.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>