OXYGENHUB

Changes up to # 5ae7533f1888 touching docs/benchmarks.md · 45

See as swimlanes (independent work side by side)

Benchmarks against Git tuned for large repositories (refs #41) head
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oxy log shows the working copy as last recorded, and takes milliseconds (refs #41)
Andy McCall ·
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A commit's own snapshot records no operation (refs #41)
Andy McCall ·
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Fewer waits on the disk: batched loose writes, the commit in one batch, fan-outs kept (refs #41)
Andy McCall ·
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Commit takes a status's snapshot from the cache; the stat check lends its stats to the snapshot (refs #41)
Andy McCall ·
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Diff renders only the edited files and skips freeing at exit (refs #41)
Andy McCall ·
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The manifest keeps directory times: status lists the tree only when a directory changed (refs #41)
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Diff from the status cache: the working-copy change rendered against its indexed base (refs #41)
Andy McCall ·
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Status with work in progress from a status cache: ahead of Git on the Linux tree (refs #41)
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Benchmarks: the first flow-casfs measurements (refs #41) v0.2.0
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Benchmarks: the second round on the Linux tree (refs #41)
Andy McCall ·
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Benchmarks: S1's first round on the Linux tree (refs #41)
Andy McCall ·
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The backlog 4 baseline against Git on the Linux tree
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The state index in the benchmarks, and the import at scale v0.1.0
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The full Linux run in the benchmarks
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fsck checks a change's text as its blobs, without decoding it
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Benchmarks: the Linux store in change format 3
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gc repacks everything into one pack, compressed harder
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Verify a Git import from each parent's state
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Import from history-only states
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Git import: one node per directory path, and no placement out of sight
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Move changes as stored in a fetch on one machine
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Read a large change once for all of a checkout's batches
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Render a file that is one chain of lines without contracting it
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Keep an insert's lines in one shared buffer
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Store a large change's texts a batch at a time
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Encode a large change once, and store it on every core
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Compute a state's tree view once
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Walk the working copy in parallel, and keep its stats
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Log, blame and fsck at the scale of the Linux tree
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Check out against the manifest, without the base state v0.1.0
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Check the manifest with a parallel walk
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Switch without a snapshot when the working copy is clean
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Read a change's skeleton for history-only states
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Check out only what differs, a batch at a time
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Answer a clean status from the manifest alone
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Status after a large commit without reading or holding its text
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Benchmarks: Linux stage 1 with change format 2
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Git import costs what each commit changes, not the whole tree
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Commit, diff and show build only what they touch
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Status snapshots skip files unchanged since the manifest
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Faster state loading: seeded fast hashing for the file graphs, no unused predecessor map, inline successor sets, lines moved rather than copied; OXY_TIMINGS=1 prints snapshot phase timings. Clean status at 10 000 files 0.96 s to 0.52 s, memory 657 to 239 MB
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Benchmarks after O10b; backlog: O10b done, O10c added
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Benchmarks after O10a; backlog: O10a done
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Benchmark harness and first numbers
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