{ "date": "2026-10-14", "platform": "macOS-27.0.1-arm64-arm-64bit", "method": "One warm-up per variant, 19 interleaved measured runs, seeded order; warm filesystem cache. Child resource usage from wait4. Output bytes compared for every run. Named output file, not stdout. 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"peak_rss_bytes": 40599552 }, { "wall_seconds": 0.06898704101331532, "cpu_seconds": 0.066741, "peak_rss_bytes": 40599552 } ] } } } }, "host_cpu": "Apple M5 Max", "rust_compiler": "rustc 1.99.0 (b940084d7 2026-09-28)", "c_compiler": "Apple clang version 21.0.0 (clang-2100.3.34.2)", "c_source_commit": "035e35a595edf50d7de6737188f417667dfb4f1a", "merge_options": [ "--jobs <1|4>", "--mem-limit 64M", "--tmpdir ", "-o " ], "fixture_generation": "python3 tools/gen-lcov.py --out --shards 8 --files 32 --lines 40000 --seed 1 --benchmark-compatible --lcov-valid --checksums", "unsorted_fixture": "Reverse the end_of_record-delimited sections of shard-0000.info; preserve all records within each section.", "c_build": "c-jobs*: C source 035e35a595edf50d7de6737188f417667dfb4f1a, original strict/hardening/platform flags with -O3, no PGO. c-pgo-jobs*: retained C v1.1.0 benchmark binary, source 33ced0b26adeffe47ed2d2041c8558a667566a51, Apple Clang 21 -O2 -mcpu=native and -fprofile-instr-use; trained on historical dataset M.", "rust_build": "make: Rust 1.99 opt-level=3, thin LTO, codegen-units=1, stripped, portable CPU baseline, profile-guided optimization via scripts/build-optimized.py. No target-cpu=native.", "rust_profile_sha256": "5dd736b22ab2d08a825b5d5eb917ab06799b5a1e0b5ab99dfa9580185604cb64", "rust_training": "Eight shards, 40 files, 40000 lines, seed 42; sorted and reversed-section unsorted fixtures, jobs 1 and 4. Held-out timed fixtures use seed 1 and 32 files.", "run_order": "For each iteration 0..19, shuffle [c-pgo-jobs1, c-pgo-jobs4, c-jobs1, c-jobs4, rust-pgo-jobs1, rust-pgo-jobs4] with random.Random(iteration); iteration 0 is warm-up.", "rust_source_files_sha256": { "Cargo.toml": "e2064d7d964648257997be44d717bf3482ea0a84b65c018377b141ca7e49b053", "Cargo.lock": "90cf0138393c6dfea68f3f828839bc1075b9bf2229e8f927246095a3bd510aef", "build.rs": "fde07199f95cb00c924029594a15091ba98113ca49b2f8163b5000c19fc874d8", "scripts/build-optimized.py": "1e75e2a388243cfe27436b1c5478e81f60fe30a93b9bdf748ef222e8e7ec08a9", "tools/gen-lcov.py": "37e357ccc0f67b92b5be1765b14ff30a2e2ee88dd234f47ac3266356c964b6e7", "src/cli.rs": "69def7b827addc47e5007ce457934d03401f4fe4725e10380876860bd04d088c", "src/common.rs": "3ba029a6ed2e0418615c9f1e1b23cfa99333a2c9909f51633c366057bb75d5f4", "src/emit.rs": "005e12ec63a80735fcf55580a0bc6a8752b02bb93fea70809bee3168441de610", "src/engine.rs": "15dfb4f43a70d4f0357dd51006342b362b22f26e87a6ccd57631c38ac53cc306", "src/lib.rs": "6c51deba67ddf83c6c9bcc261a4db03d09d9d86232d694df62dbb31d1b539c93", "src/main.rs": "04d0060a855aa731c86f1d6dc67279a45f27b4098327b089705f5e9311494757", "src/model.rs": "4cfc6b0b0e73ab51c1779271498e0e2a2dadfa38f278eb5a79b293d3700e3cc2", "src/parser.rs": "de6946f5fe5d8f0970c156e659452cc5285895492b62ccafe744fc2d4317a6d0", "src/partition.rs": "f840bf7c8ecf548470e54728476f7c5bd5b0cd9e93f4f1f7a8494a8613bdbed0", "src/path.rs": "b28528a7078b409698ff7efa0e794ce98ab1f3d82a8d28a69248234b83beb35e", ".cargo/config.toml": "53329a3ce3b81a3bcb1c083a46a8d47a09a459b457c8f2f5441fd13d9445d8b3" }, "validation": { "passed": [ "make test (544 randomized runs, 200 LCOV comparisons, 370 partition cases plus 378 forced-suite cases)", "make asan (full CLI/partition suite, LCOV comparator disabled)", "make tsan (Rust standard library instrumented; full CLI/partition suite, LCOV comparator disabled)", "make check-format (Rustfmt, Clippy all targets/features, git diff --check)", "make fuzz FUZZ_RUNS=1000000 FUZZ_SECONDS=60 (1,000,000 in-process mutations, 24,217 CLI cases)", "GitHub Action tests (12 cases)", "Windows MSVC cargo check --locked --all-targets --all-features", "Linux musl x86_64/aarch64 and macOS arm64/x86_64 release builds: two clean builds byte-compared for each target", "scripts/reproducible-build.sh (two clean portable PGO builds, frozen feedback, byte-identical)", "bench/compare-builds.py (19 runs, strict parity, jobs 1 and 4, sorted and unsorted inputs)", "Native PGO tarball extraction and merge smoke test; binary size 713264 bytes", "Website desktop/mobile rendering, no page overflow, raw validation JSON HTTP 200" ], "runtime_platform": "macOS arm64 only; Linux, Intel macOS and Windows native runtime verification is configured in CI but has not been run for this port locally.", "limitations": "Native runtime and performance evidence covers macOS arm64 only. Unprofiled cargo build --release was slower in initial tests. Unsorted Rust uses about twice the C resident memory within the configured record budget. Performance parity is established for these held-out fixtures, not all inputs or machines." } }