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Jernej Virag / PSPDFKit
Jernej Virag / PSPDFKit
I/Choreographer(1378): Skipped 55 frames! The application may be doing too much work on its main thread.
The Stutter:
Jernej Virag / PSPDFKit
60fps = 16ms time for main othread ops
Jernej Virag / PSPDFKit
MEASURE!
Jernej Virag / PSPDFKit
MEASURE!CPU Profiling: • Android Studio Profiler • TraceView • SysTrace
GPU Profiling: • Android Studio Profiler • OpenGL Profiler
Memory Profiling: • Android Studio Profiler • Eclipse MAT
Jernej Virag / PSPDFKit
Androd Studio monitors
Jernej Virag / PSPDFKit
Androd Studio CPU profiling
Jernej Virag / PSPDFKit
Androd Studio CPU profiling
✓ sub-16ms drawing✘ slow call !
Jernej Virag / PSPDFKit
TraceView
Jernej Virag / PSPDFKit
TraceView
Start CPU profile
Can also start use Debug.startMethodTracing(“filename”);
Debug.stopMethodTracing();
Jernej Virag / PSPDFKit
TraceViewMain thread
Jernej Virag / PSPDFKit
TraceView
✓
✘
Screen redraws with main thread idle between them
Screen redraws delayed due to other code on main thread
Jernej Virag / PSPDFKit
TraceView
Jernej Virag / PSPDFKit
Systrace
Jernej Virag / PSPDFKit
Systrace
Jernej Virag / PSPDFKit
Systrace
Slow onTouchEvent processing.
Jernej Virag / PSPDFKit
Systrace
First draw of complex view - creation of display list.
Jernej Virag / PSPDFKit
Systrace
Slow layout and ImageView loading image.
Custom blocks can be added with: Trace.beginSection(“name”);
Trace.endSection();
Jernej Virag / PSPDFKit
GPU profiling
Jernej Virag / PSPDFKit
Memory leak hunting
Jernej Virag / PSPDFKit
Memory leak hunting All objects in memory by class
Instances of selected class
Reference tree to GC root for selected object
Jernej Virag / PSPDFKit
Memory leak hunting
Jernej Virag / PSPDFKit
Memory leak hunting Eclipse MAT
https://eclipse.org/mat/
Jernej Virag / PSPDFKit
Memory leak hunting - MAT
Jernej Virag / PSPDFKit
Memory leak hunting - MAT
Jernej Virag / PSPDFKit
Memory leak hunting - MAT
Jernej Virag / PSPDFKit
Memory leak hunting - MAT
Jernej Virag / PSPDFKit
Memory leak hunting - MAT
Jernej Virag / PSPDFKit
#PERFMATTERShttp://blog.udinic.com/2015/09/15/speed-up-your-app
https://plus.google.com/communities/116342551728637785407
