google/perfetto
Sep 2025 – Jun 2026
9 Months active
Languages Used
C++JavaScriptPythonSQLTypeScriptJavaSCSS
Technical Skills
Android DevelopmentC++ DevelopmentDatabaseFrontend DevelopmentMemory AnalysisPerformance Analysis
gignat-dev
PROFILE
Gignat-dev
Worked extensively on the google/perfetto repository, delivering end-to-end features for trace analysis, memory diagnostics, and performance monitoring. Developed UI components such as the BigTrace SQL query interface and MemoryViz visualization tools, enabling deeper data exploration and faster debugging. Enhanced Android ANR and startup event reporting by integrating context-aware parsing and deep linking, while optimizing data models and SQL queries for accuracy and speed. Leveraged TypeScript, SQL, and C++ to implement robust data processing, plugin development, and frontend improvements. Focused on scalable architecture, test coverage, and user experience, consistently reducing investigation time and improving reliability for developers and analysts.
Overall Statistics
Feature vs Bugs
84%Features
Repository Contributions
66Total
Bugs
8
Commits
66
Features
41
Lines of code
24,707
Activity Months9
Your Network
5276 peopleSame Organization
@google.com5015
Benedict OdaiMember
Craig IngramMember
KayyuriMember
Scott SuarezMember
Agent2Agent (A2A) BotMember
Andreas AbelMember
Aadi KapurMember
Aadish GoelMember
Aahil MehtaMember
Shared Repositories
261
Work History
June 2026
11 Commits • 5 Features
Jun 1, 2026June 2026 performance summary: Delivered a cohesive set of UX, data exploration, and telemetry improvements across Perfetto and BigTrace, focused on business value through faster query iteration, reliable trace selection, and maintainable settings. Key features include a QueryPage UI overhaul with a collapsible right sidebar and an enhanced DataGrid supporting sorting, reordering, and column visibility; a BigTrace UI revamp with a unified settings surface, a filterable trace-selection DataGrid, immediate editable boolean settings with reset-to-default, and integrated trace presets; SQL formatting added to the query editor with a WASM-based formatter and keyboard shortcut; memory usage telemetry improved by attributing baselines per forking zygote for greater accuracy; and visualization enhancements for OomAdjScoreViz, BreakdownTracks, and BinderViz to yield clearer insights and faster analysis. These changes reduce toil, improve consistency, and enable end-to-end analyst workflows from query editing to result visualization, reinforced by expanded test coverage and CSP adjustments for WASM support.
11 Commits • 5 Features
Jun 1, 2026June 2026 performance summary: Delivered a cohesive set of UX, data exploration, and telemetry improvements across Perfetto and BigTrace, focused on business value through faster query iteration, reliable trace selection, and maintainable settings. Key features include a QueryPage UI overhaul with a collapsible right sidebar and an enhanced DataGrid supporting sorting, reordering, and column visibility; a BigTrace UI revamp with a unified settings surface, a filterable trace-selection DataGrid, immediate editable boolean settings with reset-to-default, and integrated trace presets; SQL formatting added to the query editor with a WASM-based formatter and keyboard shortcut; memory usage telemetry improved by attributing baselines per forking zygote for greater accuracy; and visualization enhancements for OomAdjScoreViz, BreakdownTracks, and BinderViz to yield clearer insights and faster analysis. These changes reduce toil, improve consistency, and enable end-to-end analyst workflows from query editing to result visualization, reinforced by expanded test coverage and CSP adjustments for WASM support.
June 2026
May 2026
7 Commits • 3 Features
May 1, 2026May 2026 performance summary for google/perfetto focusing on feature delivery, reliability, and performance improvements that drive faster trace analysis and better memory usage debugging.
May 2026
7 Commits • 3 Features
May 1, 2026May 2026 performance summary for google/perfetto focusing on feature delivery, reliability, and performance improvements that drive faster trace analysis and better memory usage debugging.
April 2026
2 Commits • 1 Features
Apr 1, 2026April 2026: Delivered the BigTrace UI standalone SQL query interface to empower trace data exploration, fixed critical SQL generation bug, and strengthened architecture for isolated, reusable UI components. This month focused on improving data-driven troubleshooting capabilities, reliability, and developer productivity with targeted UX enhancements and robust persistence.
2 Commits • 1 Features
Apr 1, 2026April 2026: Delivered the BigTrace UI standalone SQL query interface to empower trace data exploration, fixed critical SQL generation bug, and strengthened architecture for isolated, reusable UI components. This month focused on improving data-driven troubleshooting capabilities, reliability, and developer productivity with targeted UX enhancements and robust persistence.
April 2026
March 2026
6 Commits • 3 Features
Mar 1, 2026March 2026 performance summary for google/perfetto. Focused on strengthening memory tracing, UI reliability, and runtime diagnostics, with data-quality fixes that improve stability and user experience across tracing workflows.
March 2026
6 Commits • 3 Features
Mar 1, 2026March 2026 performance summary for google/perfetto. Focused on strengthening memory tracing, UI reliability, and runtime diagnostics, with data-quality fixes that improve stability and user experience across tracing workflows.
February 2026
21 Commits • 18 Features
Feb 1, 2026February 2026 Perfetto monthly summary focused on UI/visualization enhancements, memory analysis tooling, and stability improvements across the repository google/perfetto. Delivered key features to improve observability, triage speed, and memory diagnostics, while tightening correctness in memory analysis and plugin maintenance.
21 Commits • 18 Features
Feb 1, 2026February 2026 Perfetto monthly summary focused on UI/visualization enhancements, memory analysis tooling, and stability improvements across the repository google/perfetto. Delivered key features to improve observability, triage speed, and memory diagnostics, while tightening correctness in memory analysis and plugin maintenance.
February 2026
January 2026
7 Commits • 4 Features
Jan 1, 2026January 2026: Delivered major feature enhancements and performance optimizations across google/perfetto, focusing on improving debugging/navigation workflows and data throughput. Key features include Android Startup Analysis enhancements with URL deep linking and time-bucketed startup event summaries, ANR visualization with deep linking and automatic navigation to the last ANR's main thread, and Android Input Events data modeling improvements. Performance and robustness were strengthened through refactored track handling and robust lookup, plus removal of costly materialized hints to speed imports. These changes enable faster issue diagnosis, better trace correlation, and more scalable visualization for large traces.
January 2026
7 Commits • 4 Features
Jan 1, 2026January 2026: Delivered major feature enhancements and performance optimizations across google/perfetto, focusing on improving debugging/navigation workflows and data throughput. Key features include Android Startup Analysis enhancements with URL deep linking and time-bucketed startup event summaries, ANR visualization with deep linking and automatic navigation to the last ANR's main thread, and Android Input Events data modeling improvements. Performance and robustness were strengthened through refactored track handling and robust lookup, plus removal of costly materialized hints to speed imports. These changes enable faster issue diagnosis, better trace correlation, and more scalable visualization for large traces.
December 2025
1 Commits • 1 Features
Dec 1, 2025December 2025 monthly summary for google/perfetto: Focused delivery on Android ANR reporting enhancements to improve traceability and debugging of ANR events in Android apps. The work added intent and component context to ANR records, updated the schema, and introduced parsing functions to extract these fields based on ANR type. Includes targeted tests and validation, with strong business value in faster issue resolution and better observability.
1 Commits • 1 Features
Dec 1, 2025December 2025 monthly summary for google/perfetto: Focused delivery on Android ANR reporting enhancements to improve traceability and debugging of ANR events in Android apps. The work added intent and component context to ANR records, updated the schema, and introduced parsing functions to extract these fields based on ANR type. Includes targeted tests and validation, with strong business value in faster issue resolution and better observability.
December 2025
October 2025
2 Commits • 2 Features
Oct 1, 2025October 2025: Delivered two customer-facing enhancements in Perfetto that improve track management and analysis tooling. Key features delivered include: Perfetto Java SDK: User-provided IDs for named tracks (replacing internal ID generator; updated constructors/builders to accept user IDs); Stdlib: Thread creation spam analysis enhancements with function renames, corrected parameter names and duration filtering, standardized thread name partitioning, output column changed from pid to upid, and a new per-process analysis function with updated tests. No major bugs fixed this month. Impact: increased flexibility for instrumentation, more accurate per-process analysis, clearer APIs and improved testing coverage. Commit references: 3f60505581e6a0cb81614b15eb049bea680996d2; 8ccd2e2b296b06f2c7b29ddf3bdeaa4ed84012e7.
October 2025
2 Commits • 2 Features
Oct 1, 2025October 2025: Delivered two customer-facing enhancements in Perfetto that improve track management and analysis tooling. Key features delivered include: Perfetto Java SDK: User-provided IDs for named tracks (replacing internal ID generator; updated constructors/builders to accept user IDs); Stdlib: Thread creation spam analysis enhancements with function renames, corrected parameter names and duration filtering, standardized thread name partitioning, output column changed from pid to upid, and a new per-process analysis function with updated tests. No major bugs fixed this month. Impact: increased flexibility for instrumentation, more accurate per-process analysis, clearer APIs and improved testing coverage. Commit references: 3f60505581e6a0cb81614b15eb049bea680996d2; 8ccd2e2b296b06f2c7b29ddf3bdeaa4ed84012e7.
September 2025
9 Commits • 4 Features
Sep 1, 2025September 2025 performance and telemetry highlights for google/perfetto. Key features delivered: - CPU utilization metrics enhancements: suspend-aware CPU usage reporting and aggregation by UPID/UTID for precise attribution, enabling more accurate performance insights. Commits: 9d5ad2ed3b8003796a0cbf040372d8ccd4e01733; df3de8c4ff11d0a93ed7bd9051d432450edb7e7c. - ANR analytics enhancements: added ANR type, integrated timer-event data, default durations, and migrated storage to a perfetto table for faster, more accurate reporting. Commits: 21676c43180e838e628b9ba65bf25227bdecc70f; 881aff6bc7fa816e270ebb799bcb6ffa1918fa17; a4fd66bbbf8f91f3d5d6cbc3bcd39947d45d0dea; 34d969360658ee7c0505e4e34d5687f0ea55aaa0. - Perfetto SDK integration: added Track Event data source option on the Record page with a Track Events probe and builder updates for category selection. Commit: 7f677304e88af8374dda0f3797d1e9516ebb0292. - UNHEX support in Trace Processor: introduced UNHEX function to convert hex strings to signed 64-bit integers, with input handling, error checks, and dedicated tests. Commit: 82bed5d6ecc4d3f05a98cfb476e3953845e0e545. Major bug fixes: - Java Heap Graph deobfuscation fix: UI bug fixed to display deobfuscated names in heap graph details panel, improving readability for memory analysis. Commit: 9ef07ac117497e661702246f6d3fd5580d0a3e8e. Overall impact: - Improved accuracy of performance attribution, faster ANR triage, broader data source support, and enhanced trace processing. These changes reduce investigation time and improve reliability of performance insights, delivering tangible business value to developers and product teams. Technologies and skills demonstrated: - C++/stdlib instrumentation and data attribution with UPID/UTID - Perfetto data model enhancements and table migrations - UI integration for SDK data sources and category management - Trace Processor extension with new functions and test coverage - End-to-end changes across data collection, processing, and presentation layers.
9 Commits • 4 Features
Sep 1, 2025September 2025 performance and telemetry highlights for google/perfetto. Key features delivered: - CPU utilization metrics enhancements: suspend-aware CPU usage reporting and aggregation by UPID/UTID for precise attribution, enabling more accurate performance insights. Commits: 9d5ad2ed3b8003796a0cbf040372d8ccd4e01733; df3de8c4ff11d0a93ed7bd9051d432450edb7e7c. - ANR analytics enhancements: added ANR type, integrated timer-event data, default durations, and migrated storage to a perfetto table for faster, more accurate reporting. Commits: 21676c43180e838e628b9ba65bf25227bdecc70f; 881aff6bc7fa816e270ebb799bcb6ffa1918fa17; a4fd66bbbf8f91f3d5d6cbc3bcd39947d45d0dea; 34d969360658ee7c0505e4e34d5687f0ea55aaa0. - Perfetto SDK integration: added Track Event data source option on the Record page with a Track Events probe and builder updates for category selection. Commit: 7f677304e88af8374dda0f3797d1e9516ebb0292. - UNHEX support in Trace Processor: introduced UNHEX function to convert hex strings to signed 64-bit integers, with input handling, error checks, and dedicated tests. Commit: 82bed5d6ecc4d3f05a98cfb476e3953845e0e545. Major bug fixes: - Java Heap Graph deobfuscation fix: UI bug fixed to display deobfuscated names in heap graph details panel, improving readability for memory analysis. Commit: 9ef07ac117497e661702246f6d3fd5580d0a3e8e. Overall impact: - Improved accuracy of performance attribution, faster ANR triage, broader data source support, and enhanced trace processing. These changes reduce investigation time and improve reliability of performance insights, delivering tangible business value to developers and product teams. Technologies and skills demonstrated: - C++/stdlib instrumentation and data attribution with UPID/UTID - Perfetto data model enhancements and table migrations - UI integration for SDK data sources and category management - Trace Processor extension with new functions and test coverage - End-to-end changes across data collection, processing, and presentation layers.
September 2025
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Quality Metrics
Correctness96.2%
Maintainability85.4%
Architecture89.8%
Performance86.0%
AI Usage27.2%
Skills & Technologies
Programming Languages
C++JavaJavaScriptPythonSCSSSQLTypeScript
Technical Skills
Android DevelopmentAndroid SDKAndroid developmentC++ DevelopmentData AnalysisData VisualizationDatabaseDatabase ManagementFrontend DevelopmentJava DevelopmentJavaScriptMemory AnalysisMithrilMithril.jsNode
Repositories Contributed To
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