google/perfetto
Nov 2024 – Sep 2025
7 Months active
Languages Used
SQLC++PythonTypeScriptc++protobufpythonsql
Technical Skills
DatabasePerformance AnalysisData IngestionFrontend DevelopmentMemory AnalysisSchema Design
ilkos
PROFILE
Ilkos
Ilkos contributed to the google/perfetto repository by building and enhancing features focused on memory analysis, startup performance, and trace attribution. Over seven months, Ilkos developed modules such as heap type support in the trace processor and flamegraph visualization, introduced Android User ID attribution for process metadata, and delivered new SQL modules for Android memory events. Using TypeScript, SQL, and Protocol Buffers, Ilkos improved data ingestion pipelines, refined performance metrics by filtering non-representative events, and enhanced debugging workflows through targeted bug fixes and documentation. The work demonstrated depth in system programming and data modeling, resulting in more reliable analytics and maintainable code.
Overall Statistics
Feature vs Bugs
67%Features
Repository Contributions
10Total
Bugs
3
Commits
10
Features
6
Lines of code
690
Activity Months7
Your Network
4376 people
Work History
September 2025
1 Commits • 1 Features
Sep 1, 2025Sep 2025 performance summary: Delivered Android OutOfMemoryError documentation in google/perfetto, including a command-line heap-dump capture snippet and cross-links from the memory case study and table of contents. Implemented via commit 4acf7a1dd14f826e1141a075f889f76857c95c31 (#2924). No major bugs fixed this month based on available data; the focus was on documentation quality, onboarding, and developer tooling for memory diagnostics. Impact: enables faster OOM diagnosis on Android and improves documentation discoverability and consistency across Perfetto docs. Technologies/skills demonstrated: documentation authoring, Android memory management concepts, practical snippet creation, cross-linking, and Git-based collaboration.
1 Commits • 1 Features
Sep 1, 2025Sep 2025 performance summary: Delivered Android OutOfMemoryError documentation in google/perfetto, including a command-line heap-dump capture snippet and cross-links from the memory case study and table of contents. Implemented via commit 4acf7a1dd14f826e1141a075f889f76857c95c31 (#2924). No major bugs fixed this month based on available data; the focus was on documentation quality, onboarding, and developer tooling for memory diagnostics. Impact: enables faster OOM diagnosis on Android and improves documentation discoverability and consistency across Perfetto docs. Technologies/skills demonstrated: documentation authoring, Android memory management concepts, practical snippet creation, cross-linking, and Git-based collaboration.
September 2025
May 2025
1 Commits • 1 Features
May 1, 2025May 2025 monthly summary for google/perfetto focusing on memory-dump flame-graph analysis enhancements. Implemented enhanced flame graph filtering by unaggregated properties, enabling precise exclusion of boot/zygote classes. Changes included updates to SQL helpers and TypeScript components to support new filtering criteria, tied to commit 9ed04b27e1fea75d6b55c1122e92eaf97d3bc0ce (Linked to issue #1500).
May 2025
1 Commits • 1 Features
May 1, 2025May 2025 monthly summary for google/perfetto focusing on memory-dump flame-graph analysis enhancements. Implemented enhanced flame graph filtering by unaggregated properties, enabling precise exclusion of boot/zygote classes. Changes included updates to SQL helpers and TypeScript components to support new filtering criteria, tied to commit 9ed04b27e1fea75d6b55c1122e92eaf97d3bc0ce (Linked to issue #1500).
April 2025
2 Commits • 1 Features
Apr 1, 2025April 2025 monthly summary for google/perfetto: Delivered a new LMK Events SQL Module for Android and fixed a critical Dma-buf slice tracking bug, driving improved memory event parsing, data association, and analytics readiness. The changes advance modularization, standardize LMK event handling in a dedicated SQL module, and reduce reliance on legacy trace-processor paths, enabling more reliable analytics and easier maintenance.
2 Commits • 1 Features
Apr 1, 2025April 2025 monthly summary for google/perfetto: Delivered a new LMK Events SQL Module for Android and fixed a critical Dma-buf slice tracking bug, driving improved memory event parsing, data association, and analytics readiness. The changes advance modularization, standardize LMK event handling in a dedicated SQL module, and reduce reliance on legacy trace-processor paths, enabling more reliable analytics and easier maintenance.
April 2025
March 2025
1 Commits
Mar 1, 2025March 2025 — Perfetto: Enhanced startup analysis data quality by filtering startup slices to exclude zero or incomplete durations, and by discarding unfinished slices to prevent skewed startup metrics. This improves reliability of startup performance profiling and informs optimization priorities across the google/perfetto repository.
March 2025
1 Commits
Mar 1, 2025March 2025 — Perfetto: Enhanced startup analysis data quality by filtering startup slices to exclude zero or incomplete durations, and by discarding unfinished slices to prevent skewed startup metrics. This improves reliability of startup performance profiling and informs optimization priorities across the google/perfetto repository.
February 2025
2 Commits • 2 Features
Feb 1, 2025February 2025 — Delivered end-to-end enhancements to improve trace attribution and heap profiling in Perfetto. Implemented Android User ID attribution for Process Metadata and introduced enhanced Shared Memory Buffer options with a new default, plus a stability-focused SMB selector fix. These changes enable attribution of traces to specific Android users, improve granularity of performance and diagnostic metrics, and provide more robust, performance-oriented heap profiling. Demonstrated end-to-end changes across proto, descriptor, SQL views, and profiling tooling, reinforcing business value by enabling deeper insights and faster issue resolution.
2 Commits • 2 Features
Feb 1, 2025February 2025 — Delivered end-to-end enhancements to improve trace attribution and heap profiling in Perfetto. Implemented Android User ID attribution for Process Metadata and introduced enhanced Shared Memory Buffer options with a new default, plus a stability-focused SMB selector fix. These changes enable attribution of traces to specific Android users, improve granularity of performance and diagnostic metrics, and provide more robust, performance-oriented heap profiling. Demonstrated end-to-end changes across proto, descriptor, SQL views, and profiling tooling, reinforcing business value by enabling deeper insights and faster issue resolution.
February 2025
January 2025
2 Commits • 1 Features
Jan 1, 2025January 2025 (2025-01) performance summary for google/perfetto: Key feature delivered: Heap Type Support in Trace Processor and Flamegraph Visualization, enabling ingestion and tracking of heap type information for trace objects. This work extended HeapGraphModule and HeapGraphTracker to parse and store heap type data, updated the table schema and tests, and extended the Java flamegraph visualization to include heap type in SQL queries/hashes and the UI for granular memory analysis across different heap types. Major bugs fixed: None reported this month. Overall impact: Improves memory profiling accuracy and debugging efficiency by enabling heap-type-specific analysis, contributing to faster issue resolution and more targeted optimizations. Technologies/skills demonstrated: trace processor development, heap graph architecture, schema migrations, unit/integration tests, Java flamegraphs, SQL extensions, and UI updates.
January 2025
2 Commits • 1 Features
Jan 1, 2025January 2025 (2025-01) performance summary for google/perfetto: Key feature delivered: Heap Type Support in Trace Processor and Flamegraph Visualization, enabling ingestion and tracking of heap type information for trace objects. This work extended HeapGraphModule and HeapGraphTracker to parse and store heap type data, updated the table schema and tests, and extended the Java flamegraph visualization to include heap type in SQL queries/hashes and the UI for granular memory analysis across different heap types. Major bugs fixed: None reported this month. Overall impact: Improves memory profiling accuracy and debugging efficiency by enabling heap-type-specific analysis, contributing to faster issue resolution and more targeted optimizations. Technologies/skills demonstrated: trace processor development, heap graph architecture, schema migrations, unit/integration tests, Java flamegraphs, SQL extensions, and UI updates.
November 2024
1 Commits
Nov 1, 2024Month: November 2024 — Focused on increasing reliability of startup performance metrics in google/perfetto by refining startup metric calculation and filtering out non-startup events. Delivered a targeted code change that excludes 'completed-same-process' events, ensuring metrics reflect genuine application launches and improving the reliability of startup performance analysis. This work reduces noise in startup dashboards and informs better optimization decisions. Commit reference included below for traceability: 11fe38f78dc69fb4b0777da8908a85bdeedfce72.
1 Commits
Nov 1, 2024Month: November 2024 — Focused on increasing reliability of startup performance metrics in google/perfetto by refining startup metric calculation and filtering out non-startup events. Delivered a targeted code change that excludes 'completed-same-process' events, ensuring metrics reflect genuine application launches and improving the reliability of startup performance analysis. This work reduces noise in startup dashboards and informs better optimization decisions. Commit reference included below for traceability: 11fe38f78dc69fb4b0777da8908a85bdeedfce72.
November 2024
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Quality Metrics
Correctness90.0%
Maintainability92.0%
Architecture88.0%
Performance86.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
BashC++GNMarkdownPythonSQLTypeScriptc++protobufpython
Technical Skills
Android DevelopmentBug FixingBuild SystemsData IngestionData VisualizationDatabaseDebuggingDocumentationFront-end DevelopmentFrontend DevelopmentMemory AnalysisPerformance AnalysisProtocol BuffersSQLSchema Design
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