google/perfetto
Sep 2025 – Feb 2026
3 Months active
Languages Used
protobufC++JavaScriptPythonpython
Technical Skills
Protocol BuffersSystem TracingWindows InternalsC++ DevelopmentC++ developmentEvent Tracing for Windows (ETW)
Jesse McKenna
PROFILE
Jesse Mckenna
Worked on the google/perfetto repository to enhance Windows file I/O tracing and visualization. Developed protocol buffer definitions and integrated new ETW event types to capture detailed file system operations, improving observability for performance analysis. Extended the Perfetto UI using C++ and JavaScript to display granular file I/O events, including per-thread event rows for clearer trace data and bottleneck localization. Addressed cross-platform build issues by updating MacOS build configurations with CoreFoundation linking, ensuring reliable UI builds. Applied Python scripting and system tracing expertise to maintain data integrity, preserve unmatched events, and support accurate, thread-aware diagnostics for large-scale trace workloads.
Overall Statistics
Feature vs Bugs
75%Features
Repository Contributions
5Total
Bugs
1
Commits
5
Features
3
Lines of code
1,754
Activity Months3
Your Network
4951 peopleSame Organization
@google.com4703
Benedict OdaiMember
Craig IngramMember
KayyuriMember
Scott SuarezMember
Agent2Agent (A2A) BotMember
Andreas AbelMember
Aadi KapurMember
Aadish GoelMember
Aahil MehtaMember
Shared Repositories
248
Work History
February 2026
1 Commits • 1 Features
Feb 1, 2026February 2026: Delivered per-thread File I/O event rows in Perfetto. This enhancement improves thread-level visibility and clarity for performance analysis, enabling more precise bottleneck localization and faster debugging. Commit 8a7935b2fd07d902bef3ad7762fd2460dc5e13dc implements splitting file I/O events by thread, following the Add file I/O ETW events to Perfetto UI work and addressing reviewer feedback. Impact: clearer trace data for developers and operations, groundwork for thread-aware UI integration, and improved maintainability through focused changes.
1 Commits • 1 Features
Feb 1, 2026February 2026: Delivered per-thread File I/O event rows in Perfetto. This enhancement improves thread-level visibility and clarity for performance analysis, enabling more precise bottleneck localization and faster debugging. Commit 8a7935b2fd07d902bef3ad7762fd2460dc5e13dc implements splitting file I/O events by thread, following the Add file I/O ETW events to Perfetto UI work and addressing reviewer feedback. Impact: clearer trace data for developers and operations, groundwork for thread-aware UI integration, and improved maintainability through focused changes.
February 2026
December 2025
3 Commits • 1 Features
Dec 1, 2025December 2025 monthly summary for google/perfetto: Delivered File I/O Events UI Enhancements, improved trace accuracy with IRP-based event matching, and resolved macOS build issues for protoc by linking CoreFoundation. Result: enhanced diagnostics for file I/O traces, cross-platform UI reliability, and stronger data integrity.
December 2025
3 Commits • 1 Features
Dec 1, 2025December 2025 monthly summary for google/perfetto: Delivered File I/O Events UI Enhancements, improved trace accuracy with IRP-based event matching, and resolved macOS build issues for protoc by linking CoreFoundation. Result: enhanced diagnostics for file I/O traces, cross-platform UI reliability, and stronger data integrity.
September 2025
1 Commits • 1 Features
Sep 1, 2025September 2025 monthly summary for google/perfetto: Implemented new Windows File I/O tracing capabilities by introducing File I/O ETW event definitions and integrating them into the existing Perfetto Windows tracing pipeline. This work enhances observability of file system operations, enabling deeper performance analysis and faster debugging of IO-heavy workloads.
1 Commits • 1 Features
Sep 1, 2025September 2025 monthly summary for google/perfetto: Implemented new Windows File I/O tracing capabilities by introducing File I/O ETW event definitions and integrating them into the existing Perfetto Windows tracing pipeline. This work enhances observability of file system operations, enabling deeper performance analysis and faster debugging of IO-heavy workloads.
September 2025
Activity
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Quality Metrics
Correctness100.0%
Maintainability88.0%
Architecture96.0%
Performance84.0%
AI Usage32.0%
Skills & Technologies
Programming Languages
C++JavaScriptPythonprotobufpython
Technical Skills
C++ DevelopmentC++ developmentData visualizationEvent Tracing for Windows (ETW)JavaScript DevelopmentMacOS developmentPerformance analysisProtocol BuffersPythonPython ScriptingPython scriptingSystem TracingUI DevelopmentWindows Internalsbuild system configuration
Repositories Contributed To
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