Dev shares 8 months of production performance PRs built on local profiling
Abhishekcur · x · 2026-10-24
A developer reflects on submitting performance-improvement PRs to production codebases over the past 8 months, calling each one a tremendous learning experience with great technical discussions with maintainers.
His core workflow: reproduce the issue locally, profile it, and verify the numbers with tools like Criterion (benchmarking), Samply, and Flamegraph (which uses perf on Linux) before making changes. He notes that the ownership, responsibility, and accountability in production code far exceed typical open-source contribution — and that's exactly what he enjoys.
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