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Martin Vogel
63fb7b3db5
81264814built the production allocator as mimalloc's release build (-DMI_DEBUG=0). That bought a large speed-up, but it raised what macOS charges an index worker, its phys_footprint: | peak phys_footprint | v0.11.0 | main | |---|---:|---:| | TypeScript | 1.25 GB | 1.94 GB | | dotnet/runtime | 4.5 GB | 12.7 GB | The 2026-10-09 bench missed most of this, because it sampled RSS. The difference is one compile-time branch in mimalloc's unix decommit. With MI_DEBUG or MI_SECURE>2, a purged range is mprotect(PROT_NONE)'d and flagged needs_recommit. A release build leaves it "committed". When the arena hands such a range out again, it is re-accounted as a whole with MADV_FREE_REUSE (arena.c, _mi_os_reuse). macOS then charges every page of it to the footprint, touched or not. On macOS, take the recommit path in every build. Linux and Windows keep upstream's behaviour; there MADV_DONTNEED already drops RSS at once. Measured on Apple arm64 (macOS 26.6), mainec4fbd3avs this change, cold full indexes interleaved with main (C#: 2 runs each, in the same session as main): | corpus | footprint before | footprint after | change | wall time | |---|---:|---:|---:|---| | TypeScript | 1.98 GB | 1.09 GB | -45 % | unchanged | | kubernetes | 2.92 GB | 1.88 GB | -35 % | unchanged | | dotnet/runtime | 12.6 GB | 4.9 GB | -61 % | unchanged | | linux kernel | 16.0 GB | 13.5 GB | -16 % | 574 -> 559 s | The graph is byte-identical: TypeScript, kubernetes and django give the same nodes, edges and CALLS-set hash. dotnet/runtime is now close to v0.11.0's 4.5 GB. Measured but not taken: - the whole debug build, which costs ~5 % wall time on C#; - MI_STAT=2, MI_PADDING=1 or MI_ENCODE_FREELIST=1 alone, none of which moves the footprint; - MIMALLOC_PURGE_DELAY=0, which is already set. Vendored file changed in place (precedent1f674c80); its hash in scripts/vendored-checksums.txt is updated and security-vendored.sh passes. Signed-off-by: Martin Vogel <martin.vogel.tech@gmail.com>
scripts/ — the canonical leg entries
The doctrine (enforced, not advisory): a venue may provision a machine;
only a canonical leg script may exercise the product. Local CI, PR CI, the
dry run and the release all call the SAME files below — venues differ only in
host specs, architecture and inputs, never in what a leg does. Platform
differences (arm64 sanitizer flags, native Windows behavior, the Linux portable
binary) live INSIDE these scripts, once, never per-venue.
tests/test_venue_parity_contract.sh (run as Step 0j of every test leg) turns
any violation — inline harness logic in a workflow, a bypassed wrapper, a
missing --help — into a red build.
Every entry answers --help (authoritative, agent-oriented: modes, env, exit
codes) and rejects unknown flags with exit 2 + Please consult --help.
The legs
| leg | entry | what a run gives you |
|---|---|---|
| test | test.sh |
DEFAULT = the venue leg: static contracts (Step 0a–0r) + CLEAN ASan+UBSan build + all suites via the parallel harness + prod-binary guards. --suites a,b = iteration mode (incremental rebuild, subset, seconds). --tsan = the ThreadSanitizer leg. --contracts-only = the static contract steps alone (PR CI's contracts job for docs-only and non-product changes). CLANGARM64 gets CI's trap-UBSan flags automatically. |
| package wrappers | ci/test-package-wrappers.sh |
Go, npm, and PyPI runtime-set publication/lock suites on the current host. CI runs the same entry on Linux and Windows so both platform lock implementations gate. |
| build | build.sh |
CLEAN production runtime set (native executable + authenticated integration asset; --with-ui adds one content-addressed UI pack). ccache via env.sh makes repeats fast; CCACHE_COMPILERCHECK=content guarantees a hit is byte-identical to a cold compile — never stale. --version, STATIC=1, BUILD_DIR=. |
| lint | lint.sh |
clang-tidy + cppcheck + clang-format (+ no-skips policy). --ci = the CI gate set (no clang-tidy). Drives the same make targets as make lint/lint-ci. |
| smoke (unix) | smoke-local.sh |
Stages a full release fixture, serves it on a kernel-assigned port, runs smoke-test.sh (ALL phases incl. download/install/update E2E) inside a disposable HOME/XDG/TMP sandbox. ui variant makes a missing verified UI pack a FAILURE. CBM_SMOKE_ARTIFACT_DIR = smoke an extracted release artifact verbatim (release mode). |
| smoke (windows) | ../test-infrastructure/vm/vm-smoke.sh |
Same verified runtime-set contract on the real Windows VM, plus the user-PATH registry guard (prepare/verify/cleanup). |
| smoke-invariants | smoke-invariants.sh |
Production-path resilience battery (MCP handshake, all tools invocable, malformed-input handling, supervised crash/hang recovery) — no fixture server or install E2E. smoke.yml runs an explicitly seam-enabled build on the WIDEST source matrix; release artifacts remain seam-free and use the release-shaped smoke legs above. |
| soak | soak-legs.sh |
The release-gating soak SEQUENCE: quick then query-leak (the #581 detector — never reindexes, so RSS growth = query-path leak), each guarded by a completion-summary check. --legs quick for the ASan single-leg variant. Duration is per leg. |
Internal harnesses — never called directly by a venue (the contract forbids
it): smoke-test.sh (phases; wrappers provide fixture server + sandbox),
soak-test.sh (one soak run; soak-legs.sh provides the sequence + guards),
run-tests-parallel.sh (reached through test.sh).
Conventions
- Exit codes: 0 = pass · 2 = usage error · 90 = guard (a run died without its completion summary — never counts as green) · anything else = the leg's real failure.
- Iteration is a flag, not a side-tool: the fast paths (
--suites,--legs) are modes of the SAME entry the gates run, so a dev loop can never drift from the venue behaviour. - Env sandboxing: the smoke wrappers neutralize every agent-config destination override; a smoke can never scribble on your real config.
Recommended workflows
- Iterating on a change:
scripts/test.sh --suites <suite>(seconds, incremental, same ASan+UBSan flags as the gate). List suites:build/c/test-runner --list-suites. Debugging a Windows-on-ARM trap: re-run withSANITIZE=for a plain build, or use the emulatedwin.sh ubsan-*pair for full diagnostics. - Before any push (the 3-OS ladder):
scripts/test.sh(macOS, full) →./test-infrastructure/run.sh full(Linux + TSan + smoke) →test-infrastructure/vm/win.sh test-par+guards+smoke-install(+soakwhen the change touches memory/daemon paths). - Concurrency-touching change: add
scripts/test.sh --tsanearly — the same leg CI gates on. - Release-shaped verification:
CBM_SMOKE_ARTIFACT_DIR=<extracted artifact> scripts/smoke-local.sh <binary> [ui]smokes exactly what would ship. - A leg is red in CI but green locally: first suspect environment shape,
not code — the preflights (
win.shautomatic;scripts/ci/preflight-docker.sh) andtest-infrastructure/README.md's residuals list cover the knowable differences.
See scripts/ci/README.md for the CI plumbing and
test-infrastructure/README.md for the venue map.