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Guillaume Thiolliere

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Guillaume Thiolliere

Worked on refining benchmarking configuration in the polkadot-fellows/runtimes repository, focusing on improving the accuracy and reliability of runtime performance metrics. Replaced hardcoded lists of whitelisted storage keys with dynamic retrieval using the AllPalletsWithSystem::whitelisted_storage_keys() trait, ensuring that benchmarks always reflect the current runtime state. This approach enhanced benchmark precision, reduced variance, and improved maintainability by leveraging Substrate traits for dynamic configuration. Utilized Rust and Substrate for runtime development and benchmarking, addressing issues with outdated key handling and enabling more reproducible results. The work provided a stronger foundation for performance optimization and more accurate cost and complexity accounting.

Overall Statistics

Feature vs Bugs

100%Features

Repository Contributions

1Total
Bugs
0
Commits
1
Features
1
Lines of code
144
Activity Months1

Work History

January 2025

1 Commits • 1 Features

Jan 1, 2025

Month: 2025-01. Key features delivered: Benchmarking Configuration Refinement for Accurate Benchmarks in polkadot-fellows/runtimes. Replaced hardcoded lists of whitelisted storage keys with dynamic retrieval from AllPalletsWithSystem::whitelisted_storage_keys() trait, ensuring benchmarks use up-to-date and comprehensive key sets, improving benchmark precision and potentially lowering call costs. Major bugs fixed: Fixed whitelisted keys in benchmarks (#525) to ensure benchmark inputs reflect current runtime state and avoid skewed results. Overall impact: More reliable, reproducible performance metrics; stronger foundation for optimization decisions; improved cost/complexity accounting for benchmark runs. Technologies/skills demonstrated: Rust, Substrate runtime development, dynamic data retrieval via traits, benchmarking practices, code maintainability and commit hygiene. Business value: Accurate benchmarks enable targeted optimizations, reduce risk of misinformed decisions, and provide confidence in performance improvements for customers and internal stakeholders.

Activity

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Quality Metrics

Correctness90.0%
Maintainability80.0%
Architecture90.0%
Performance80.0%
AI Usage20.0%

Skills & Technologies

Programming Languages

Rust

Technical Skills

BenchmarkingRuntime DevelopmentRustSubstrate

Repositories Contributed To

1 repo

Overview of all repositories you've contributed to across your timeline

polkadot-fellows/runtimes

Jan 2025 Jan 2025
1 Month active

Languages Used

Rust

Technical Skills

BenchmarkingRuntime DevelopmentRustSubstrate