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[perf] Add a SceneDisplayLag event when we miss vsyncs #17575

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iskakaushik
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This event goes from now -> current vsync target time to avoid the limitations as seen in flutter/flutter#54095 (comment)

This event also args additional metadata to capture vsync_transitions_missed considering the refresh rate of the display.

@auto-assign auto-assign bot requested a review from GaryQian April 7, 2020 22:06
@iskakaushik iskakaushik requested review from jason-simmons and liyuqian and removed request for GaryQian April 7, 2020 22:06
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I'm going to land #17571 to fix flutter/flutter#54095 before going ahead with this change.

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LGTM

This event goes from now -> current vsync target time
to avoid the limitations as seen in flutter/flutter#54095 (comment)

This event also tags additional metadata to capture
`vsync_transitions_missed` considering the refresh rate of the display.
@iskakaushik iskakaushik merged commit f6ca489 into flutter:master Apr 8, 2020
engine-flutter-autoroll added a commit to engine-flutter-autoroll/flutter that referenced this pull request Apr 8, 2020
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engine-flutter-autoroll added a commit to engine-flutter-autoroll/flutter that referenced this pull request Apr 8, 2020
engine-flutter-autoroll added a commit to engine-flutter-autoroll/flutter that referenced this pull request Apr 8, 2020
engine-flutter-autoroll added a commit to engine-flutter-autoroll/flutter that referenced this pull request Apr 9, 2020
engine-flutter-autoroll added a commit to engine-flutter-autoroll/flutter that referenced this pull request Apr 9, 2020
engine-flutter-autoroll added a commit to engine-flutter-autoroll/flutter that referenced this pull request Apr 9, 2020
engine-flutter-autoroll added a commit to engine-flutter-autoroll/flutter that referenced this pull request Apr 9, 2020
engine-flutter-autoroll added a commit to engine-flutter-autoroll/flutter that referenced this pull request Apr 9, 2020
engine-flutter-autoroll added a commit to engine-flutter-autoroll/flutter that referenced this pull request Apr 9, 2020
engine-flutter-autoroll added a commit to engine-flutter-autoroll/flutter that referenced this pull request Apr 10, 2020
goderbauer pushed a commit to goderbauer/engine that referenced this pull request Apr 16, 2020
This event goes from now -> current vsync target time
to avoid the limitations as seen in flutter/flutter#54095 (comment)

This event also tags additional metadata to capture
`vsync_transitions_missed` considering the refresh rate of the display.
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