google/perfetto
Sep 2025 – Oct 2025
2 Months active
Languages Used
C++JavaScriptPythonSQLTypeScriptJava
Technical Skills
Android DevelopmentC++ DevelopmentDatabaseFrontend DevelopmentMemory AnalysisPerformance Analysis
gignat-dev
PROFILE
Gignat-dev
Greg Ignat worked on the google/perfetto repository, delivering six features and a bug fix over two months focused on performance analysis and trace tooling. He enhanced CPU utilization metrics with suspend-aware reporting and UPID/UTID-based aggregation, improving attribution accuracy. Greg also expanded ANR analytics, migrated storage for faster reporting, and integrated new data sources into the Perfetto SDK. He introduced an UNHEX function in the Trace Processor using C++ and SQL, and fixed Java Heap Graph deobfuscation in the UI. His work demonstrated depth across Android development, system monitoring, and frontend engineering, resulting in more reliable and flexible performance insights.
Overall Statistics
Feature vs Bugs
86%Features
Repository Contributions
11Total
Bugs
1
Commits
11
Features
6
Lines of code
1,354
Activity Months2
Your Network
4376 people
Work History
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.
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
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.
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.
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Quality Metrics
Correctness95.4%
Maintainability91.8%
Architecture93.6%
Performance91.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
C++JavaJavaScriptPythonSQLTypeScript
Technical Skills
Android DevelopmentAndroid SDKC++ DevelopmentDatabaseFrontend DevelopmentJava DevelopmentMemory AnalysisPerformance AnalysisPerformance MonitoringPerformance OptimizationPythonPython ScriptingSQLSystem MonitoringSystem Performance Analysis
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