google/perfetto
Jan 2025 – Jun 2026
5 Months active
Languages Used
C++SQLprotobufJSONJavaScriptSCSSTypeScript
Technical Skills
DatabaseEmbedded SystemsPerformance AnalysisSQLSystem ProgrammingBackward Compatibility
Eric Seckler
PROFILE
Eric Seckler
Worked on the google/perfetto repository, delivering features and fixes across trace processing, UI/UX, and system internals. Developed enhancements for Android power rail mapping and sandboxed thread ID handling, improving trace accuracy and backward compatibility. Refactored JIT mapping logic in C++ to support multiple JIT caches, reducing crashes and improving profiling performance. Improved UI usability with a hover-to-view screenshot feature using TypeScript and JavaScript, and strengthened robustness in data export and test coverage. Addressed bugs in trace event handling and timestamp comparisons, ensuring reliable integration tests. Demonstrated expertise in system programming, performance analysis, and front end development throughout the work.
Overall Statistics
Feature vs Bugs
56%Features
Repository Contributions
10Total
Bugs
4
Commits
10
Features
5
Lines of code
564
Activity Months5
Your Network
5262 peopleSame Organization
@google.com5001
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
1 Commits • 1 Features
Jun 1, 2026June 2026: Delivered JIT Mapping Enhancement to support multiple JIT caches within a single memory mapping, avoiding crashes and boosting profiling performance. Refactored mapping logic to perform on-demand JIT cache lookup per PC, enabling accurate JIT frame attribution in merged traces (e.g., V8). Fixed a crash caused by treating the JIT cache as tied to the entire mapping and added a unit test for multi-cache scenarios. Impact: increased stability, reduced jit_unknown_frame noise, and improved trace accuracy across complex configurations. Technologies/skills demonstrated include C++ refactoring, memory mapping, per-PC JIT cache lookup, test-driven development, and performance optimization.
1 Commits • 1 Features
Jun 1, 2026June 2026: Delivered JIT Mapping Enhancement to support multiple JIT caches within a single memory mapping, avoiding crashes and boosting profiling performance. Refactored mapping logic to perform on-demand JIT cache lookup per PC, enabling accurate JIT frame attribution in merged traces (e.g., V8). Fixed a crash caused by treating the JIT cache as tied to the entire mapping and added a unit test for multi-cache scenarios. Impact: increased stability, reduced jit_unknown_frame noise, and improved trace accuracy across complex configurations. Technologies/skills demonstrated include C++ refactoring, memory mapping, per-PC JIT cache lookup, test-driven development, and performance optimization.
June 2026
May 2026
3 Commits • 2 Features
May 1, 2026May 2026 monthly summary for google/perfetto: Focused on UI UX improvement, robustness, and developer guidance. Key features delivered include UI hover to view the most recent screenshot on a track, and developer guidance for Chrome unpacked extension loading. Major bugs fixed addressed robustness in data export by handling invalid UTIDs gracefully. Overall impact: improved user experience, more reliable trace data processing, and clearer extension deployment guidance, contributing to product reliability and developer efficiency. Technologies/skills demonstrated include UI redesign and test-driven development with unit and integration tests, robustness in data processing, and Chrome extension development awareness.
May 2026
3 Commits • 2 Features
May 1, 2026May 2026 monthly summary for google/perfetto: Focused on UI UX improvement, robustness, and developer guidance. Key features delivered include UI hover to view the most recent screenshot on a track, and developer guidance for Chrome unpacked extension loading. Major bugs fixed addressed robustness in data export by handling invalid UTIDs gracefully. Overall impact: improved user experience, more reliable trace data processing, and clearer extension deployment guidance, contributing to product reliability and developer efficiency. Technologies/skills demonstrated include UI redesign and test-driven development with unit and integration tests, robustness in data processing, and Chrome extension development awareness.
September 2025
2 Commits
Sep 1, 2025September 2025: Focused on reliability and correctness improvements in Perfetto. Delivered two critical bug fixes to stabilize tests and trace processing, enabling more reliable API integrations and cross-component data assembly. Key achievements include switching to GE in TrackEventTimestampUnitIncremental tests and globalizing TRACE_EVENT_PHASE_MARK emissions to address process lifetime discrepancies.
2 Commits
Sep 1, 2025September 2025: Focused on reliability and correctness improvements in Perfetto. Delivered two critical bug fixes to stabilize tests and trace processing, enabling more reliable API integrations and cross-component data assembly. Key achievements include switching to GE in TrackEventTimestampUnitIncremental tests and globalizing TRACE_EVENT_PHASE_MARK emissions to address process lifetime discrepancies.
September 2025
July 2025
2 Commits • 1 Features
Jul 1, 2025July 2025 monthly summary for google/perfetto focusing on Sandboxed Thread ID Handling and its impact on trace interpretation across Linux sandboxed processes.
July 2025
2 Commits • 1 Features
Jul 1, 2025July 2025 monthly summary for google/perfetto focusing on Sandboxed Thread ID Handling and its impact on trace interpretation across Linux sandboxed processes.
January 2025
2 Commits • 1 Features
Jan 1, 2025January 2025 monthly performance summary for google/perfetto. Focused on Android Probes and power-rails analytics. Delivered feature enhancement for Android Probes: Enhanced Power Rail Mapping for P23/24; improved robustness of mapping across Pixel generations to ensure accurate power rail identification in trace data. Fixed critical bug: Android Power Rails average power calculation; replaced division by near-zero duration with nanoseconds-based scaling to avoid NULL results. Commits associated with these changes include cc75c2555ddfd6bc678cfed36d6fe66d1789d673 and ab5c6f1b2ddc55ad5c5cadde12c61391d571e89b. Overall impact includes more accurate trace power data, cross-device reliability, and faster diagnostics for power-performance analysis. Technologies demonstrated include Android probes module updates, SQL-based power calculations, data instrumentation, and robust edge-case handling across Pixel devices.
2 Commits • 1 Features
Jan 1, 2025January 2025 monthly performance summary for google/perfetto. Focused on Android Probes and power-rails analytics. Delivered feature enhancement for Android Probes: Enhanced Power Rail Mapping for P23/24; improved robustness of mapping across Pixel generations to ensure accurate power rail identification in trace data. Fixed critical bug: Android Power Rails average power calculation; replaced division by near-zero duration with nanoseconds-based scaling to avoid NULL results. Commits associated with these changes include cc75c2555ddfd6bc678cfed36d6fe66d1789d673 and ab5c6f1b2ddc55ad5c5cadde12c61391d571e89b. Overall impact includes more accurate trace power data, cross-device reliability, and faster diagnostics for power-performance analysis. Technologies demonstrated include Android probes module updates, SQL-based power calculations, data instrumentation, and robust edge-case handling across Pixel devices.
January 2025
Activity
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Quality Metrics
Correctness92.0%
Maintainability88.0%
Architecture89.0%
Performance86.0%
AI Usage22.0%
Skills & Technologies
Programming Languages
C++JSONJavaScriptSCSSSQLTypeScriptprotobuf
Technical Skills
Backward CompatibilityC++C++ developmentChrome Extension DevelopmentDatabaseEmbedded SystemsJavaScriptPerformance AnalysisProtocol BuffersSQLSystem InternalsSystem ProgrammingTestingTrace ProcessingTracing
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