
Adyabr developed experimental jank classification and visualization enhancements for the FrameTimeline system in the google/perfetto repository. Their work introduced new data fields and a user-controlled toggle to switch between traditional and experimental jank classification, enabling side-by-side visual comparison of results. By adding the JANK_DISPLAY_NOT_ON type, Adyabr improved the accuracy of performance reporting during inactive display states. The implementation leveraged TypeScript and C++ for UI and backend changes, with Protocol Buffers used for data modeling. This feature group provided a flexible experimentation pathway for users, supporting earlier detection of performance regressions and more granular analysis of system performance issues.

Monthly summary for 2025-10 (google/perfetto): Key features delivered: - Experimental Jank Classification and Visualization Enhancements for FrameTimeline: delivered a consolidated feature group enabling experimental jank measurement fields, a user toggle to switch between traditional and experimental classification, an experimental side-by-side comparison track, and a new jank type JANK_DISPLAY_NOT_ON to capture jank when the display is not active. Major bugs fixed: - No critical bugs reported this month. Efforts focused on feature rollout and data consistency improvements, including robust handling for display-off scenarios. Overall impact and accomplishments: - Strengthened frame timing analytics with richer data fields and flexible classification, enabling earlier detection of performance regressions and improved diagnosis of jank. - Provided users with an adjustable experimentation pathway (feature toggle) and visual aids (side-by-side track) to compare classification approaches. - Improved reporting granularity for non-active display states, enhancing accuracy of performance measurements during idle periods. Technologies/skills demonstrated: - Data modeling and instrumentation for FrameTimeline in Perfetto; experimentation via feature toggles; UI/visualization enhancements; commit-driven development; cross-functional collaboration via incremental commits. Commits (representative): - c63922cabbde52bacdd51a17ea6cc472ca5aceb3: Add a few additional fields to Frametimeline, currently in experimental mode (#3159) - f1469e753c78b52cbb4fe1abb82141ac82903bc0: Add a settings toggle for experimental jank classification (#3180) - 69bd8a4b80aca14a9f07b5443572bb34150e496c: Show an additional track for experimental jank classification for a side-by-side comparison (#3184) - 9e88d7f37407ab04dc3e158d6b8673a06014430f: Add a new jank type for when the display is not ON (#3356)
Monthly summary for 2025-10 (google/perfetto): Key features delivered: - Experimental Jank Classification and Visualization Enhancements for FrameTimeline: delivered a consolidated feature group enabling experimental jank measurement fields, a user toggle to switch between traditional and experimental classification, an experimental side-by-side comparison track, and a new jank type JANK_DISPLAY_NOT_ON to capture jank when the display is not active. Major bugs fixed: - No critical bugs reported this month. Efforts focused on feature rollout and data consistency improvements, including robust handling for display-off scenarios. Overall impact and accomplishments: - Strengthened frame timing analytics with richer data fields and flexible classification, enabling earlier detection of performance regressions and improved diagnosis of jank. - Provided users with an adjustable experimentation pathway (feature toggle) and visual aids (side-by-side track) to compare classification approaches. - Improved reporting granularity for non-active display states, enhancing accuracy of performance measurements during idle periods. Technologies/skills demonstrated: - Data modeling and instrumentation for FrameTimeline in Perfetto; experimentation via feature toggles; UI/visualization enhancements; commit-driven development; cross-functional collaboration via incremental commits. Commits (representative): - c63922cabbde52bacdd51a17ea6cc472ca5aceb3: Add a few additional fields to Frametimeline, currently in experimental mode (#3159) - f1469e753c78b52cbb4fe1abb82141ac82903bc0: Add a settings toggle for experimental jank classification (#3180) - 69bd8a4b80aca14a9f07b5443572bb34150e496c: Show an additional track for experimental jank classification for a side-by-side comparison (#3184) - 9e88d7f37407ab04dc3e158d6b8673a06014430f: Add a new jank type for when the display is not ON (#3356)
Overview of all repositories you've contributed to across your timeline