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zit Check-in [18ffce5678]
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Check-in [18ffce5678]

Overview
Comment:timeline: read the image, not a full derive (zit#181)

The image has carried adjacency since layout 2 and comment/login since layout 6, so every default row renders from the zero-parse path; only full/-v/-p still read manifests. 60 ms to 8 ms on a 22k check-in store, output byte-identical across formats.

Timelines: family | ancestors | descendants | both | trunk
Files: files | file ages | folders
SHA3-256: 18ffce5678044dcc247645c22eb0e5b2a43ccd36e8550a61b69587001a4b3a2d
User & Date: dmestas on 2026-09-06 20:47:01.638
Other Links: manifest | tags
Context
2026-09-06
20:59
repocache: a hit rewrites a stale or missing image (zit#180)

A cache whose image is absent or at an old layout replayed the record body on every fast_read open, since only a miss stored. The hit now serializes the image from the view it just built and stores it, so the fallback is paid once. check-in: 98c5d6c61a user: dmestas tags: trunk

20:47
timeline: read the image, not a full derive (zit#181)

The image has carried adjacency since layout 2 and comment/login since layout 6, so every default row renders from the zero-parse path; only full/-v/-p still read manifests. 60 ms to 8 ms on a 22k check-in store, output byte-identical across formats. check-in: 18ffce5678 user: dmestas tags: trunk

20:06
grep: read manifests only where the record says PATH changed (zit#178)

One record scan, as annotate, instead of a manifest per check-in: 20,937 reads to 272 on VERSION, 19s to 0.4s. Each version is reported once under its oldest introducer, matching fossil grep's list byte for byte. check-in: 6be0341149 user: dmestas tags: trunk

Changes