[jdx]

Summary

• add an isolated task artifact cache benchmark harness
• measure source hashing, archive publication, restoration, and cached graph traversal separately
• generate configurable large source, artifact, and dependency-graph fixtures
• document usage and complete the benchmark tracker item

Validation

• TASK_CACHE_BENCH_SOURCES=10 TASK_CACHE_BENCH_ARTIFACT_BYTES=65536 TASK_CACHE_BENCH_TASKS=5 TASK_CACHE_BENCH_RUNS=2 MISE_BIN="$PWD/target/debug/mise" bash benchmarks/task-cache/benchmark.sh
• mise run lint-fix

AI-assisted — Tool: Codex; model: unavailable/unavailable; version: unavailable.

---

Note

Low Risk
Benchmark and documentation only; no changes to cache runtime behavior or production code paths.

Overview
Adds an end-to-end benchmark harness for the experimental local task artifact cache, wired as mise run perf:task-cache (release build + benchmarks/task-cache/benchmark.sh).

The script spins up a temporary mise project with configurable scale (defaults: 2k sources, 32 MiB artifact, 500-node graph) and reports median wall-clock times for four phases: source hashing / result-only publish, task run + archive creation, cache restore, and fully cached graph traversal. Fixture prep and cache warm-up sit outside the timed windows; MISE_BIN and TASK_CACHE_BENCH_* env vars tune binary and size.

Docs and tracking: README describes usage and env overrides; TASK_CACHE_PARITY.md marks the hashing/archive/restore benchmark tracker item done; tasks.md documents the new task.

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[greptile-apps]

Greptile Summary

The PR adds an isolated benchmark harness for task artifact-cache hashing, publication, restoration, and graph traversal, plus task-runner wiring and usage documentation.

• Generates configurable source, artifact, and dependency-graph fixtures in a temporary project.
• Reports median wall-clock measurements for four cache phases.
• Adds perf:task-cache and marks the corresponding parity-tracker item complete.

Confidence Score: 4/5

The PR is not ready to merge because the restore and cached-graph phases still measure the wrong behavior.

The restore setup deletes the output but the current-output fast path skips before extraction, while source-less graph tasks do not receive cache configuration and therefore never create the entries the cached traversal phase claims to measure.

Files Needing Attention: benchmarks/task-cache/benchmark.sh, TASK_CACHE_PARITY.md

Important Files Changed

Filename	Overview
benchmarks/task-cache/benchmark.sh	Adds the benchmark fixture and timing harness, but the previously reported restore and cached-graph measurement defects remain.
benchmarks/task-cache/README.md	Documents benchmark phases, defaults, configuration variables, and comparison guidance.
mise.toml	Adds a task that builds the release binary and launches the benchmark harness.
TASK_CACHE_PARITY.md	Marks the benchmark tracker item complete, although two benchmark phases still do not measure their stated workloads.
tasks.md	Adds generated usage documentation for the new performance task.

_{Reviews (10): Last reviewed commit: "perf(task): benchmark artifact cache pha..." | Re-trigger Greptile}

[github-actions]

Instruction counts

benchmark	trend	instructions	Δ	wall (min)	Δ
env	▂▃▂▁▁▁▃▃▃█	80,074,952 → 80,255,975	+0.23%	17.64 → 18.30ms	+3.74%
hook-env	▅▅▁▃▂▂▃▃▄█	82,190,914 → 82,339,219	+0.18%	18.34 → 19.41ms	+5.85%
ls	▄▃▁▁▁▅▄▅▄█	73,127,800 → 73,275,815	+0.20%	15.71 → 16.44ms	+4.62%
registry	▁▁▂▁▂▃▃▄▁█	49,102,713 → 49,323,289	+0.45%	11.64 → 12.33ms	+5.91%
startup	▃▃▁▂▂▁▁▂▂█	15,784,751 → 15,840,006	+0.35%	9.04 → 9.28ms	+2.65%

No instruction-count regression above 1%.

_{Only instruction counts gate. Wall clock is shown for context — on identical hardware it moves 4-20% run to run.}

_{Measured by tak — instruction-counted CLI benchmarks, stored in this repository's git notes.}

_{03aa16066835 vs e5230aa14775 · measured on the runner, not pushed to the history.}

[cursor]

Cursor Bugbot has reviewed your changes and found 1 potential issue.

There are 2 total unresolved issues (including 1 from previous review).

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Dismissed because a newer commit was pushed; Greptile will re-review the current head.