google/perfetto
May 2025 – May 2025
1 Month active
Languages Used
C++Proto
Technical Skills
DebuggingPerformance AnalysisProtocol BuffersSystem ProgrammingTrace Analysis
John Stultz
PROFILE
John Stultz
Worked on the google/perfetto repository to enhance observability and debugging of timer-related issues in complex systems. Developed new ftrace events for high-resolution timer (hrtimer) expirations and improved the ftrace parser to preserve function names in timer expiration events, enabling more accurate trace analysis. Introduced an HRTimer track in the user interface, allowing developers to visualize timer expirations directly within the UI. The work leveraged C++ and Protocol Buffers, with a focus on system programming and performance analysis. These changes provided deeper insight into timer behavior, supporting more efficient debugging and analysis of timing issues in large-scale system traces.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
1Total
Bugs
0
Commits
1
Features
1
Lines of code
510
Activity Months1
Your Network
248 peopleShared Repositories
248
Work History
May 2025
1 Commits • 1 Features
May 1, 2025Concise monthly summary for 2025-05 focused on google/perfetto. Key deliverables include new ftrace events for timer expirations (hrtimers), preservation of function names in timer expiration events during ftrace parsing, and a new HRTimer track in the UI to visualize these events. These changes improve observability, debugging efficiency, and accuracy of timer-related issues in complex systems.
1 Commits • 1 Features
May 1, 2025Concise monthly summary for 2025-05 focused on google/perfetto. Key deliverables include new ftrace events for timer expirations (hrtimers), preservation of function names in timer expiration events during ftrace parsing, and a new HRTimer track in the UI to visualize these events. These changes improve observability, debugging efficiency, and accuracy of timer-related issues in complex systems.
May 2025
Activity
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Quality Metrics
Correctness90.0%
Maintainability80.0%
Architecture80.0%
Performance80.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
C++Proto
Technical Skills
DebuggingPerformance AnalysisProtocol BuffersSystem ProgrammingTrace Analysis
Repositories Contributed To
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