Syncing task from Mir. ** Changed in: mir (Ubuntu) Importance: Undecided => Medium
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to mir in Ubuntu. https://bugs.launchpad.net/bugs/1565596 Title: [regression] NBS uses quad-buffers even when not required Status in Mir: New Status in mir package in Ubuntu: New Bug description: Since the fix for bug 1557962 landed, NBS allocates four buffers to the client surface even when not required (running in a window without overlays): $ env MIR_CLIENT_PERF_REPORT=log glmark2-mir -b texture [2016-04-04 11:15:11.894754] perf: glmark2 2014.03+git20150611.fa71af2d: 9051.00 FPS, render time 0.06ms, buffer lag 0.26ms (4 buffers) [2016-04-04 11:15:12.894807] perf: glmark2 2014.03+git20150611.fa71af2d: 8706.00 FPS, render time 0.06ms, buffer lag 0.28ms (4 buffers) [2016-04-04 11:15:13.895012] perf: glmark2 2014.03+git20150611.fa71af2d: 8806.00 FPS, render time 0.06ms, buffer lag 0.27ms (4 buffers) FPS: 8817 FrameTime: 0.113 ms Compare to BufferQueue: [2016-04-04 11:17:12.611400] perf: glmark2 2014.03+git20150611.fa71af2d: 8789.00 FPS, render time 0.06ms, buffer lag 0.27ms (3 buffers) [2016-04-04 11:17:13.611470] perf: glmark2 2014.03+git20150611.fa71af2d: 8707.00 FPS, render time 0.06ms, buffer lag 0.28ms (3 buffers) [2016-04-04 11:17:14.611555] perf: glmark2 2014.03+git20150611.fa71af2d: 8462.00 FPS, render time 0.06ms, buffer lag 0.28ms (3 buffers) The fourth buffer is technically only required when using framedropping with bypass/overlays simultaneously. To manage notifications about this bug go to: https://bugs.launchpad.net/mir/+bug/1565596/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
