Firefox OS/Performance/App Performance Validation: Difference between revisions

Firefox OS/Performance/App Performance Validation (view source)

742 bytes added , 25 February 2014

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 '''Platform Contact''': Graphics
 '''What does it mean''':
+Check that the generated layer tree can composited by the GPU every frame.
 '''Verification Steps''':
+* Turn on 'Frames per second' from the Developer HUD.
+* Watch the left most FPS counter during animations and scrolling. This number should remain very close to the refresh rate of the display (~60 FPS for most devices). Large layer transformations (check with layer border/layers.dump) will cause a dip in this counter.
+and
+* Turn on 'Frames per second' from the Developer HUD.
+* Set layers.offmainthreadcomposition.frame-rate to 0.
+* Watch the left most FPS counter during idle at various stage of your app.  This number should remain very close to the refresh rate of the display (~60 FPS for most devices). There should be little to no dips below 60 FPS here.
 == 9. Memory usage ==