colineonset

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Onset: version control where nobody waits and nothing gets lost. The on command, its core and onset-server.

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coline/onset

colineonset

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Onset: version control where nobody waits and nothing gets lost. The on command, its core and onset-server.

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perf(vcs): a new machine's copy comes from a snapshot the host keeps

Radin committed …

Author: Radin · radin@coline.appOct 28, 2026 at 15:52
Committer: Radin · radin@coline.appOct 28, 2026 at 15:52
Parents: a6d46e548af8

perf(vcs): a new machine's copy comes from a snapshot the host keeps

On a 20,000-version project a tree's files sat across hundreds of R2
packs, and a whole-tree download read them six ranges at a time: vcs get
took 21 s against git clone's 10 s. The host now keeps a recent tree's
objects in one R2 object and sends that plus what changed since. It is
remade once a download needs more than 64 reads past it, is only sent to
someone who may read its tree, and is checked before use since a rollback
can name one already deleted. vcs get on that project: 1.4-2 s.

Also: VCS_TRACE=1 prints each host call with its time, and bench-live.sh
races Rapid's server landing (refs/land) next to plain git and vcs.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

4 files changed+70−9

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