Also confirmed that OTA-10 images 31 and 32 are slow only in the spread, and only with a few windows or more.
The Mir performance report for Unity8 is showing smooth performance in Unity8 other than a well populated spread. In fact, performance of the spread varies dynamically according to the number of windows in it.
If you view the top of the window stack then you get 4-5 windows visible and it's slow and stuttery. If you go to the bottom of the stack though and wiggle your finger, it becomes fast again -- because at the bottom of the stack only two windows come into view simultaneously.
So the regression is probably somewhere between Unity8 and QtMir, where our ability to put multiple surfaces on screen at once has degraded.
Also confirmed that OTA-10 images 31 and 32 are slow only in the spread, and only with a few windows or more.
The Mir performance report for Unity8 is showing smooth performance in Unity8 other than a well populated spread. In fact, performance of the spread varies dynamically according to the number of windows in it.
If you view the top of the window stack then you get 4-5 windows visible and it's slow and stuttery. If you go to the bottom of the stack though and wiggle your finger, it becomes fast again -- because at the bottom of the stack only two windows come into view simultaneously.
So the regression is probably somewhere between Unity8 and QtMir, where our ability to put multiple surfaces on screen at once has degraded.