Fix committed to lp:mir/0.26 at revision 4004, scheduled for release in
Mir 0.26.1
** Changed in: mir/0.26
Status: Confirmed => Fix Committed
** Changed in: mir (Ubuntu)
Status: Confirmed => Triaged
** Changed in: canonical-devices-system-image
Status: Confirmed => Triaged
Yes high CPU is expected from this bug, since the normal vsync
throttling is just falling through. So the nested server and any of its
clients that use async swaps (which means server-side vsync used by
Xmir) will also render unthrottled hogging the CPU.
Although we've still got a lot to optimize
** Branch linked: lp:~ci-train-bot/mir/mir-ubuntu-zesty-2435
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Title:
mir 0.26 - spinner loading animation, minimize, maximize too fast
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** Branch linked: lp:mir/0.26
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Title:
mir 0.26 - spinner loading animation, minimize, maximize too fast
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** Branch linked: lp:mir
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Title:
mir 0.26 - spinner loading animation, minimize, maximize too fast
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Also noticing that with Mir 0.26 I'm seeing large CPU usage by XMir
applications. Firefox on the start page (no animations or anything) is
seeing U8 using 50% CPU and Xmir 20% CPU. It could be these are the same
issue?
Machine is an i7, xenial-overlay up-to-date.
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** Tags added: regression
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Title:
mir 0.26 - spinner loading animation, minimize, maximize too fast
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** Branch linked: lp:~vanvugt/mir/fix-missing-vsync
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Title:
mir 0.26 - spinner loading animation, minimize, maximize too fast
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I think I understand this now. See bug 1661128. Two bugs, one cause.
** Changed in: mir
Status: Confirmed => In Progress
** Changed in: miral (Ubuntu)
Status: Confirmed => Invalid
** Changed in: unity8 (Ubuntu)
Status: Confirmed => Invalid
** Changed in: canonical-devices-s
** Also affects: mir/0.26
Importance: Undecided
Status: New
** Changed in: mir/0.26
Assignee: (unassigned) => Daniel van Vugt (vanvugt)
** Changed in: mir/0.26
Milestone: None => 0.26.1
** Changed in: mir
Status: New => Confirmed
** Changed in: mir/0.26
Status:
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: unity8 (Ubuntu)
Status: New => Confirmed
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Title:
mir
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: mir (Ubuntu)
Status: New => Confirmed
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Title:
mir 0.
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: miral (Ubuntu)
Status: New => Confirmed
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Title:
mir
** Changed in: mir
Milestone: 0.26.1 => 1.0.0
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Title:
mir 0.26 - spinner loading animation, minimize, maximize too fast
To manage notificati
No problem specifically with Qt... System Settings is still silky-smooth
under Mir demo servers:
mirrun system-settings
So the issue seems to be localised to the Unity8 server/compositor.
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It appears Unity8 is unthrottled, as in swap interval 0. So when I drag
a window around rapidly it matches the USB mouse event rate rather than
the display's refresh rate. MIR_CLIENT_PERF_REPORT shows:
[2017-02-02 10:29:02.531811] perf: : 131.00 FPS, render time 7.61ms, buffer lag
22.92ms (4 buff
** Changed in: mir
Milestone: None => 0.26.1
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Title:
mir 0.26 - spinner loading animation, minimize, maximize too fast
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See also bug 1661128
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Title:
mir 0.26 - spinner loading animation, minimize, maximize too fast
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htt
Although animations should always be bound to real time. If your
animation changes speed with different vsync rate then the animation
logic that needs fixing. That said, it's useful right now for pointing
to bugs elsewhere in the system...
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Running a Mir demo server on VT1 has no such trouble. Everything is
silky smooth there. Hmm, something unique about the way Unity8 is
interacting with Mir...
** Also affects: mir
Importance: Undecided
Status: New
** Changed in: mir
Assignee: (unassigned) => Daniel van Vugt (vanvugt
Indeed things are slightly weird in Unity8 with Mir 0.26.
Certainly the lag problem is gone(!), but some animations run too fast
and the whole shell is rendering around 20-30Hz despite the fact that
clients like egltriangle report that they get 60Hz.
It feels like Qt apps in a nested shell have a
yeah, i would find it odd if this were mir0.26
possibly something changed at the Qt level, easingcurves & duration of
animations
as a check, any chance you could downgrade to mir0.25 and see if you feel the
same way?
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