And based on John's earlier remark, ie that the same HW and drivers do perform properly with another OS, then it means that Ubuntu components between apps and driver/HW are introducing that extra 20/40ms delay. Mir? Unity8? Something else?
On Tue, Apr 19, 2016 at 8:47 PM, Chris Coulson <[email protected]> wrote: > The main reason Oxide is slow is because the browser's UI thread is > being blocked for long periods of time due to an issue *outside* of > Oxide. > > As a quick test, I just ran the address book app with > QSG_RENDER_TIMING=1, and it demonstrates exactly the same issue as the > browser - the render thread regularly being blocked for over 20ms and > sometimes up to 40ms in eglSwapBuffers, which causes the UI thread to be > blocked, eg: > > qt.scenegraph.time.renderloop: Frame rendered with 'threaded' renderloop > in 41ms, sync=0, render=5, swap=35 - (on render thread) > qt.scenegraph.time.renderloop: Frame prepared with 'threaded' renderloop, > polish=0, lock=0, blockedForSync=36, animations=0 - (on Gui thread) > QQuickView(0x385ef0) > > Scrolling in address book app is also very janky (like with every other > app and the shell on my M10). I'm not the only person seeing this, am I? > > -- > You received this bug notification because you are a bug assignee. > https://bugs.launchpad.net/bugs/1550371 > > Title: > Webbrowser slow scroll and artifact rendering on freiza > > To manage notifications about this bug go to: > > https://bugs.launchpad.net/canonical-devices-system-image/+bug/1550371/+subscriptions > ** Also affects: mir Importance: Undecided Status: New ** Also affects: unity8 (Ubuntu) Importance: Undecided Status: New ** Changed in: webbrowser-app (Ubuntu) Assignee: Olivier Tilloy (osomon) => (unassigned) ** Changed in: canonical-devices-system-image Assignee: David Barth (dbarth) => kevin gunn (kgunn72) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1550371 Title: Webbrowser slow scroll and artifact rendering on freiza To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1550371/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
