pgit, a Git-like CLI that stores repository history in PostgreSQL using delta compression, successfully imported the entire Linux kernel history: 1,428,882 commits, 24.4 million file versions, and 20 years of development in 2 hours on a Hetzner dedicated server. The resulting 6.6 GB PostgreSQL database (2.7 GB actual data) enables SQL queries across the full history in seconds. Analysis reveals: 38,506 unique authors with 25:1 contributor-to-committer ratio, 90% of commits touching 5 or fewer files, Intel i915 and Btrfs as the most tightly coupled subsystems, David S. Miller merging 7.9% of all commits, Intel leading corporate contributions, and quirky findings like 7 f-bombs in commit messages (from 2 people), 665 bug fixes pointing to the initial git import commit, and bcachefs taking 13 years to merge into mainline.
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