google/perfetto
Feb 2025 – Mar 2026
6 Months active
Languages Used
C++TypeScriptprotobufprotopythonsqlProtoBuf
Technical Skills
FtraceProtocol BuffersSystem ProgrammingSystem TracingTrace AnalysisUI Development
Shin-Yu Wang
PROFILE
Shin-yu Wang
Shinyu Wang developed and enhanced display performance tracing features for the google/perfetto repository over six months, focusing on end-to-end observability and diagnostics for graphics and display subsystems. Shinyu introduced new ftrace events and metrics, such as DPU underrun and panel state reporting, and integrated these with the trace processor and UI to enable granular, actionable insights. Using C++, Protocol Buffers, and Python, Shinyu improved trace event parsing, visualization accuracy, and automated testing. The work provided deeper visibility into display pipelines, supported data-driven performance analysis, and established robust monitoring foundations, reflecting a thorough and systematic engineering approach throughout the project.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
9Total
Bugs
0
Commits
9
Features
6
Lines of code
901
Activity Months6
Your Network
4627 peopleSame Organization
@google.com4394
Benedict OdaiMember
Craig IngramMember
KayyuriMember
Scott SuarezMember
Agent2Agent (A2A) BotMember
Andreas AbelMember
Aadi KapurMember
Aadish GoelMember
Aahil MehtaMember
Shared Repositories
233
Work History
March 2026
2 Commits • 1 Features
Mar 1, 2026March 2026 (2026-03) — Display performance tracing and visualization enhancements delivered for Perfetto, focusing on reliability and UI accuracy to enable faster performance analysis and better decision making for display subsystem optimizations.
2 Commits • 1 Features
Mar 1, 2026March 2026 (2026-03) — Display performance tracing and visualization enhancements delivered for Perfetto, focusing on reliability and UI accuracy to enable faster performance analysis and better decision making for display subsystem optimizations.
March 2026
January 2026
2 Commits • 1 Features
Jan 1, 2026January 2026: Delivered Perfetto panel performance monitoring enhancements for google/perfetto. Implemented a new gram_collision ftrace event and panel_state metrics to capture panel diagnostics and DPU underruns, enabling deeper diagnostics and faster MTTR for panel issues. Completed end-to-end validation using gfx-based recording and ensured correct UI event display. Added automated tests in tools/diff_test_trace_processor.py to guard against regressions. This work improves visibility into panel health, supports proactive optimization, and provides a solid foundation for future performance improvements.
January 2026
2 Commits • 1 Features
Jan 1, 2026January 2026: Delivered Perfetto panel performance monitoring enhancements for google/perfetto. Implemented a new gram_collision ftrace event and panel_state metrics to capture panel diagnostics and DPU underruns, enabling deeper diagnostics and faster MTTR for panel issues. Completed end-to-end validation using gfx-based recording and ensured correct UI event display. Added automated tests in tools/diff_test_trace_processor.py to guard against regressions. This work improves visibility into panel health, supports proactive optimization, and provides a solid foundation for future performance improvements.
December 2025
1 Commits • 1 Features
Dec 1, 2025December 2025 monthly summary for google/perfetto development focusing on graphics performance tracing. Delivered a feature to add G2D ftrace events to the gfx category, addressing a known issue and enhancing observability for graphics pipelines. This change enables richer graphics performance metrics and faster debugging across Android graphics workloads.
1 Commits • 1 Features
Dec 1, 2025December 2025 monthly summary for google/perfetto development focusing on graphics performance tracing. Delivered a feature to add G2D ftrace events to the gfx category, addressing a known issue and enhancing observability for graphics pipelines. This change enables richer graphics performance metrics and faster debugging across Android graphics workloads.
December 2025
April 2025
1 Commits • 1 Features
Apr 1, 2025April 2025: Focused on delivering a key metrics feature for Perfetto with improved display pipeline visibility and groundwork for more accurate monitoring. This month’s effort centers on introducing per-display underrun reporting and deprecating the global total_dpu_underrun_count to increase granularity and accuracy of DPU underrun metrics. No separate bug fixes were documented in the provided data; the work enhances observability and paves the way for data-driven optimizations.
April 2025
1 Commits • 1 Features
Apr 1, 2025April 2025: Focused on delivering a key metrics feature for Perfetto with improved display pipeline visibility and groundwork for more accurate monitoring. This month’s effort centers on introducing per-display underrun reporting and deprecating the global total_dpu_underrun_count to increase granularity and accuracy of DPU underrun metrics. No separate bug fixes were documented in the provided data; the work enhances observability and paves the way for data-driven optimizations.
March 2025
1 Commits • 1 Features
Mar 1, 2025March 2025 monthly summary focusing on business value and technical outcomes for the google/perfetto project. Key feature delivered: new tracing event to capture vertical blanking IRQ enable/disable signals. This expands observability for display pipelines and supports debugging and performance analysis. Minor or no user-facing bugs reported this month. Overall impact includes improved tracing accuracy for display subsystems and a clearer path for performance optimizations.
1 Commits • 1 Features
Mar 1, 2025March 2025 monthly summary focusing on business value and technical outcomes for the google/perfetto project. Key feature delivered: new tracing event to capture vertical blanking IRQ enable/disable signals. This expands observability for display pipelines and supports debugging and performance analysis. Minor or no user-facing bugs reported this month. Overall impact includes improved tracing accuracy for display subsystems and a clearer path for performance optimizations.
March 2025
February 2025
2 Commits • 1 Features
Feb 1, 2025February 2025: Monthly summary for google/perfetto focused on delivering end-to-end observability improvements for Display Processing Unit (DPU) underruns. Introduced a new ftrace event and added UI/trace processing integration to enable faster debugging and more actionable performance insights.
February 2025
2 Commits • 1 Features
Feb 1, 2025February 2025: Monthly summary for google/perfetto focused on delivering end-to-end observability improvements for Display Processing Unit (DPU) underruns. Introduced a new ftrace event and added UI/trace processing integration to enable faster debugging and more actionable performance insights.
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Quality Metrics
Correctness95.6%
Maintainability88.8%
Architecture93.4%
Performance88.8%
AI Usage20.0%
Skills & Technologies
Programming Languages
C++ProtoBufTypeScriptprotoprotobufpythonsql
Technical Skills
C++ developmentDebuggingFtracePerformance AnalysisPerformance monitoringProtocol BuffersPython testingSQLSystem ProgrammingSystem TracingSystem tracingTrace AnalysisUI Developmentdata analysismetrics collection
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