Artifact Description [4a5542be70]

Artifact 4a5542be70d7b5e6366238b7e4c8d133aff6fd59ae4c40c0984323ea298c1eee:

• File docs/plans/bench/baseline-unstamped-run.json
  • 2026-07-17 19:07:33 — part of check-in [9aaf485847] on branch storage — bench(§4): step-1 at-rest baseline, fossil+sqlite corpora, CLONE/SYNC ingest

    zit vs fossil at-rest bytes over the fossil-bench fossil-scm + sqlite corpora, imported via the clone/sync path (putDeltaContainer verbatim frames exercised):

    fossil-scm-clone: zit 117,528,088 B vs fossil 72,245,248 B -> 1.63x (67,499 artifacts) sqlite: zit 207,344,544 B vs fossil 147,709,952 B -> 1.40x (130,994 artifacts)

    Frame classes, artifact-type split, compression headroom, and serve CPU (203.9 / 138.4 MB/s) from 'zig build bench -- storage'. Chain-depth p50/p99 and a pure put us/artifact are NOT emitted by the current harness (plan §4.3 metrics-to-add); not synthesized (Rule 7). Comparison class: approximate (whole-file sizes, differing store shapes). Corpora unpinned; observed trunk hashes recorded in the JSON. (user: dmestas, size: 7826) [annotate] [blame] [check-ins using]

  • 2026-07-18 16:24:11 — part of check-in [bab9303056] on branch trunk — Merge storage: at-rest re-deltification closes most of the content-bytes gap

    fossil-style best-of-N delta base selection (pickBase, plan §5) plus a `zit pack` re-deltification pass with a monotonic-shrink guard (§6.1) and same-path candidates (§6.2). At-rest only: all four RFCs conformant, wire interop preserved, every repacked frame hash-verified against the log.

    Measured (whole-file, index-inclusive): sqlite: 207.3 MB -> 174.4 MB (1.40x -> 1.18x vs fossil 147.7 MB) fossil-scm: 117.5 MB -> 108.1 MB (1.63x -> 1.50x vs fossil 72.2 MB)

    The monotonic-shrink guard (keep the smaller of {existing frame, re-encoding}) is what turned re-deltifying a clone of fossil-quality wire deltas into a net win instead of a +33% regression. (user: dmestas, size: 7826) [annotate] [blame] [check-ins using]

  • 2026-07-18 17:05:22 — part of check-in [e640119891] on branch cli — Merge trunk into cli: integrate the storage pack work with the verb slice

    Brings trunk bab930 (the storage branch's at-rest re-deltification / zit pack generational rewrite, plus src/pack.zig and its bench baselines) into the cli-verbs-2 slice. One conflict, in src/root.zig — both branches added a module export at the same spot; resolved by keeping both (pub const bisect and pub const pack). logstore.zig and main.zig auto-merged. Integrated tree green: 1678 unit + 376 e2e; the seven new verbs and the pack pass together. (user: dmestas, size: 7826) [annotate] [blame] [check-ins using]