google/perfetto
Jul 2025 – May 2026
3 Months active
Languages Used
c++javaprotopython
Technical Skills
Build SystemsEmbedded SystemsProtocol BuffersSystem Programminginput device managementprotocol buffer design
Harry Cutts
PROFILE
Harry Cutts
Worked on the google/perfetto repository to enhance kernel input event tracing by designing and integrating new Protocol Buffer definitions for Linux evdev events. Developed features enabling end-to-end capture of input events, dynamic device lifecycle tracking, and configurable privacy controls within the tracing pipeline. Leveraged C++, Python, and proto to model device properties, manage input event states, and optimize trace data inclusion. The work improved trace fidelity, reduced data volume, and strengthened privacy by introducing a flag for selective event recording. Demonstrated expertise in build systems, embedded systems, and protocol buffer design, delivering features aligned with product observability and debugging goals.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
3Total
Bugs
0
Commits
3
Features
3
Lines of code
370
Activity Months3
Your Network
5217 peopleSame Organization
@google.com4956
Benedict OdaiMember
Craig IngramMember
KayyuriMember
Scott SuarezMember
Agent2Agent (A2A) BotMember
Andreas AbelMember
Aadi KapurMember
Aadish GoelMember
Aahil MehtaMember
Shared Repositories
261
Work History
May 2026
1 Commits • 1 Features
May 1, 2026May 2026 performance summary for google/perfetto: Delivered a privacy- and size-optimized tracing feature by adding a configurable evdev event inclusion flag in input traces. The new protos flag trace_evdev_events enables optional evdev events, reducing trace size and improving privacy. Commit: 4eea1d1c609b1b21928d32ec3f21d6bfaf6b8c1a; Bug: b/394861376. No major bugs fixed this month; groundwork laid for broader rollout and downstream integration. Technologies demonstrated: proto changes, tracing pipeline integration, and issue-tracking discipline. Business impact: lower data-volume, storage, and processing costs, with improved privacy controls.
1 Commits • 1 Features
May 1, 2026May 2026 performance summary for google/perfetto: Delivered a privacy- and size-optimized tracing feature by adding a configurable evdev event inclusion flag in input traces. The new protos flag trace_evdev_events enables optional evdev events, reducing trace size and improving privacy. Commit: 4eea1d1c609b1b21928d32ec3f21d6bfaf6b8c1a; Bug: b/394861376. No major bugs fixed this month; groundwork laid for broader rollout and downstream integration. Technologies demonstrated: proto changes, tracing pipeline integration, and issue-tracking discipline. Business impact: lower data-volume, storage, and processing costs, with improved privacy controls.
May 2026
February 2026
1 Commits • 1 Features
Feb 1, 2026February 2026 monthly summary for google/perfetto: Delivered Evdev Device Lifecycle Event Support, introducing device addition/removal events in the evdev protocol and new structures to represent input device properties and states. This enables accurate interpretation of InputEvents and dynamic device management, improving tracing fidelity and debugging capabilities. Work aligns with the bug resolution for InputEvents context (b/394861376) and integrates with the protos changes to support lifecycle events. The changes are committed as protos: Add evdev device addition and removal events (#4872) with commit c82fb577c5b0e0100da838161757d37851514ffb. Impact highlights: - Improved reliability and readability of input-event traces across dynamic devices. - Faster root-cause analysis for device-related issues in perfetto traces. - Strengthened end-to-end traceability from evdev device state changes to InputEvents, enabling better performance analysis. Technologies/skills demonstrated: protocol buffers (protos), evdev protocol, trace event modeling, version control (git), code review and collaboration.
February 2026
1 Commits • 1 Features
Feb 1, 2026February 2026 monthly summary for google/perfetto: Delivered Evdev Device Lifecycle Event Support, introducing device addition/removal events in the evdev protocol and new structures to represent input device properties and states. This enables accurate interpretation of InputEvents and dynamic device management, improving tracing fidelity and debugging capabilities. Work aligns with the bug resolution for InputEvents context (b/394861376) and integrates with the protos changes to support lifecycle events. The changes are committed as protos: Add evdev device addition and removal events (#4872) with commit c82fb577c5b0e0100da838161757d37851514ffb. Impact highlights: - Improved reliability and readability of input-event traces across dynamic devices. - Faster root-cause analysis for device-related issues in perfetto traces. - Strengthened end-to-end traceability from evdev device state changes to InputEvents, enabling better performance analysis. Technologies/skills demonstrated: protocol buffers (protos), evdev protocol, trace event modeling, version control (git), code review and collaboration.
July 2025
1 Commits • 1 Features
Jul 1, 2025July 2025 monthly performance summary for google/perfetto focused on delivering end-to-end kernel input event tracing enhancement and strengthening the observability stack. The work aligns with product goals to expand trace data coverage and improve kernel-level visibility for users and developers.
1 Commits • 1 Features
Jul 1, 2025July 2025 monthly performance summary for google/perfetto focused on delivering end-to-end kernel input event tracing enhancement and strengthening the observability stack. The work aligns with product goals to expand trace data coverage and improve kernel-level visibility for users and developers.
July 2025
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Quality Metrics
Correctness100.0%
Maintainability93.4%
Architecture100.0%
Performance86.6%
AI Usage20.0%
Skills & Technologies
Programming Languages
c++javaprotopython
Technical Skills
Build SystemsEmbedded SystemsProtocol BuffersSystem Programminginput device managementprotocol buffer designprotocol bufferssystem designsystem programming
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