Timeline

fossil fills mlink as each check-in arrives and answers finfo by lookup. zit's derive computed the same row per check-in and dropped it; the index was rebuilt by a separate pass on the first PATH query, 6.8 min on pkgsrc and not resumable. The derive now hands each change set to an index builder as it links, stores it beside the checkpoint, and extends it over the tail on append; a cache hit computes nothing. The on-query build is the fallback and checkpoints every 8192 entries. Index format 4 records completeness so a partial checkpoint is never adopted whole. crosslink reports a tree's files instead of unknown. pkgsrc, fresh clone to first answer: 11.7 min -> 7.1 min + 1s. check-in: df99743ca4 user: dmestas tags: trunk