UI profiling in examples. Where is my bottleneck?

on YouTube ↗33m

" summary

Walks through concrete tooling and fixes: use dumpsys gfxinfo, GPU profiler and Systrace to get fps and janky-frame counts, export view layers with HierarchyViewer or Scalpel to find overdraw, and read Android Vitals for fleet metrics. Explains Android render pipeline (DisplayLists, Choreographer, Render Thread) and the 60 FPS / 16 ms budget. Shows real wins: a controller-stack bug inflates view count from ~300 causing 40ms renders reduced to 6ms after fix, and an EditText cursor bug causing ~20ms jank.

AI-written summary · about

" chapters (12)

1. 0:00Introduction to UI profiling
2. 8:11Detecting UI performance issues
3. 11:23Common UI bottlenecks
4. 14:13Debugging layout complexity
5. 18:07Using ViewStub for optimization
6. 21:40Hierarchy Viewer limitations
7. 22:01Fixing overdraw problems
8. 25:35Real-world performance testing
9. 26:38Analyzing frame drops
10. 27:42Prioritizing UI optimizations
11. 30:51Automating performance checks
12. 31:52Handling slow devices

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