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Reliably fast navigation #10

Description

@mathjeff

Occasionally when navigating to another screen in ActivityRecommender, it takes more time than normal: closer to 0.5s instead of 0.1s.

My guess is that the reason for this is a combination of:

  • The layout engine (VisiPlacer) repeatedly allocating slightly more memory that needed
  • The garbage collector periodically taking a while to free that recently allocated, no longer used memory

but I haven't verified this and it might be incorrect.

It would be nice to make ActivityRecommender take a consistent amount of time to navigate between screens each time (after the first couple of navigations where caches are warming up).

To reproduce, choose a couple of screens in ActivityRecommender and try navigating between them a few (maybe 10) times

Activity

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