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PASS", "Running sanity check 2 .......... PASS", "Running append zeroes test .......... PASS", "Running prepend zeroes test .......... PASS", "Running thread-safety test 1 .......... PASS", "Running thread-safety test 2 .......... PASS" ], "failure_lines": [], "sanity_raw_file": "raw/M2/MurmurHash3-128.sanity.txt", "sanity_raw_sha256": "35ffb30c9cf3ce984064059bfae43cb0e2eb8b2b1a4ff33424bfce9de3e27473", "sanity_command": [ "SMHasher3", "MurmurHash3-128", "--test=Sanity" ], "sanity_binary_sha256": "52c54407205727175eb0034f030a7956f187f99dd98131fe9dae45f237947391" }, "runs": [ { "name": "MurmurHash3-128", "run": 1, "host": "M2Pro", "test": "Speed", "command": [ "nice", "-n", "10", "SMHasher3", "MurmurHash3-128", "--test=Speed" ], "raw_file": "raw/M2/MurmurHash3-128.run1.txt", "raw_sha256": "678c640aefcfd23fee86ffa15fd38d2f9feea21fd088251922aea902049dcef8", "sha256_verified": true, "binary_sha256": "52c54407205727175eb0034f030a7956f187f99dd98131fe9dae45f237947391", "returncode": 0, "elapsed_seconds": 265.33902787498664, "started": "2026-09-28T14:25:47.871898+00:00", "finished": "2026-09-28T14:30:13.204654+00:00", "load_before": { "load1": 3.05029296875, "load5": 3.3369140625, "load15": 4.19384765625, "uptime_line_load": "3.05 3.34 4.19" }, "load_after": { "load1": 4.31103515625, "load5": 3.74755859375, "load15": 4.11962890625, "uptime_line_load": "4.31 3.75 4.12" }, "cpu_busy_percent_before": null, "cpu_busy_percent_after": null, "valid": true, "small_cycles": 44.04, "bulk_bytes_per_cycle": 1.73, "bulk_gib_s": 5.65, "clock_assumption": "3.5 ghz", "variable_bulk_bytes_per_cycle": 1.71, "variable_bulk_gib_s": 5.58 }, { "name": "MurmurHash3-128", "run": 2, "host": "M2Pro", "test": "Speed", "command": [ "nice", "-n", "10", "SMHasher3", "MurmurHash3-128", "--test=Speed" ], "raw_file": "raw/M2/MurmurHash3-128.run2.txt", "raw_sha256": "34a2c893c47d38ed1e89939314137224b0ba3a22b2260acab572781651093e6b", "sha256_verified": true, "binary_sha256": "52c54407205727175eb0034f030a7956f187f99dd98131fe9dae45f237947391", "returncode": 0, "elapsed_seconds": 271.64961441699415, "started": "2026-09-28T15:43:23.108946+00:00", "finished": "2026-09-28T15:47:54.795080+00:00", "load_before": { "load1": 4.07861328125, "load5": 5.03955078125, "load15": 5.52587890625, "uptime_line_load": "4.08 5.04 5.53" }, "load_after": { "load1": 5.576171875, "load5": 5.45458984375, "load15": 5.576171875, "uptime_line_load": "5.58 5.45 5.58" }, "cpu_busy_percent_before": null, "cpu_busy_percent_after": null, "valid": true, "small_cycles": 42.82, "bulk_bytes_per_cycle": 1.75, "bulk_gib_s": 5.71, "clock_assumption": "3.5 ghz", "variable_bulk_bytes_per_cycle": 1.74, "variable_bulk_gib_s": 5.69 }, { "name": "MurmurHash3-128", "run": 3, "host": "M2Pro", "test": "Speed", "command": [ "nice", "-n", "10", "SMHasher3", "MurmurHash3-128", "--test=Speed" ], "raw_file": "raw/M2/MurmurHash3-128.run3.txt", "raw_sha256": "d39b7327b51991f655b5e590a23c8558c175a5e5dc6d6e59d3cedda9d9bcdbfd", "sha256_verified": true, "binary_sha256": "52c54407205727175eb0034f030a7956f187f99dd98131fe9dae45f237947391", "returncode": 0, "elapsed_seconds": 268.4406077079475, "started": "2026-09-28T16:33:17.440865+00:00", "finished": "2026-09-28T16:37:45.878324+00:00", "load_before": { "load1": 3.70654296875, "load5": 4.1455078125, "load15": 4.30615234375, "uptime_line_load": "3.71 4.15 4.31" }, "load_after": { "load1": 4.615234375, "load5": 4.47998046875, "load15": 4.40478515625, "uptime_line_load": "4.62 4.48 4.40" }, "cpu_busy_percent_before": null, "cpu_busy_percent_after": null, "valid": true, "small_cycles": 43.38, "bulk_bytes_per_cycle": 1.75, "bulk_gib_s": 5.71, "clock_assumption": "3.5 ghz", "variable_bulk_bytes_per_cycle": 1.72, "variable_bulk_gib_s": 5.6 } ], "control_baseline": { "file": "speeds.json", "sha256": "4527144cad003acef668c35faf0aac131d8c079efe9f8d2c310f7c4789c1602a", "bulk_bytes_per_cycle": 1.92, "small_cycles": 40.31, "baseline_binary_sha256": "fb2f75fb2f170a6956441e7db8ae2ae95e3944ef44eecbb0aeeb46d4115b025a", "same_binary": false, "ratios": { "bulk_bytes_per_cycle": 0.9114583333333334, "small_cycles": 1.076159761845696 }, "flag_over_15_percent": false } } }, "meta": { "hashes": { "xxh64": "XXH64 (SMHasher3 XXH-64)", "xxh32": "XXH32 (SMHasher3 XXH-32)", "murmurhash64a": "MurmurHash64A (SMHasher3 MurmurHash2-64)", "murmurhash2": "MurmurHash2, 32-bit (SMHasher3 MurmurHash2-32)", "murmurhash2a": "MurmurHash2A (SMHasher3 MurmurHash2a)", "XXH3-64": "same-binary control; published value in speeds.json", "MurmurHash3-128": "same-binary control; published value in speeds.json" }, "protocol": { "command": "SMHasher3 NAME --test=Speed (unmodified harness, no overrides); SMHasher3 NAME --test=Sanity once per hash and host", "bulk": "Average of alignments 0..7 at fixed 262144 bytes (SMHasher3 Average line)", "small": "Average of the 31 separately measured 1..31-byte costs", "xeon": "two complete passes; higher fixed-size bulk (ties: higher GiB/s, then earlier) and lower small average (ties: earlier) selected independently", "m2": "three complete passes; median of bulk and median of small, independently; any run deviating more than 15 percent from its median is flagged, never dropped", "order": "Sanity for all seven names, then pass 1 over all seven names, then pass 2 (and pass 3 on the M2); one SMHasher3 process at a time", "completed_runs_excluded": 0 }, "affinity": { "Xeon8375C": "nice -n 10 taskset -c 16-23 (the post's range; the host has CPUs 0-95 only); per-CPU busy samples of 16-23 before and after each run", "M2Pro": "nice -n 10, no affinity" }, "load_gate": { "Xeon8375C": "no other SMHasher3 process and load1 < 80 (shared host; other users' unpinned jobs)", "M2Pro": "no other SMHasher3 process and load1 < 4.5; 60 s polls" }, "builds": { "Xeon8375C": { "binary_sha256": "03c2ff9f38cc564400eeb1906da90cb74ea6efcff2bea6c660626fdbe1571a99", "base": "the post's Xeon SMHasher3 Release build (build-release-20260917), the same binary as the XXH3-64 and MurmurHash3-128 rows of speeds.json", "compiler": "c++ (GCC) 11.5.0 20240719 (Red Hat 11.5.0-14)", "build_type": "Release" }, "M2Pro": { "binary_sha256": "52c54407205727175eb0034f030a7956f187f99dd98131fe9dae45f237947391", "base": "the public timing reproduction's arm64 build (pin 3de870c7 + patch series incl. the arm64 family.cmake fix), the same base as speeds_polyxor.json. The post's M2 binary (m2-rerun/build-fixed, sha256 fb2f75fb...) no longer exists on disk; the controls here are same-binary controls against the published speeds.json values of that other binary." } }, "units": { "Xeon8375C": "TSC ticks", "M2Pro": "SMHasher3 calibrated cycles (per-process monotonic-clock estimate)", "gib_s": "printed GiB/s assumes 3.5 GHz on both hosts; a conversion of B/cycle" } } }