{ "variant": "before", "rounds": [ { "revision": "ec577ca4bc9dc54c2650777cab5806274c2a3f7f", "working_tree_modified": true, "binary_sha256": "14e36178640be54dd23e20ad7ed714c741802b30226d28a1335e8a1df7009212", "build": { "CMAKE_BUILD_TYPE": "RelWithDebInfo", "CMAKE_CXX_COMPILER": "/out/host-tools/bin/clang++", "CMAKE_CXX_FLAGS": "-stdlib=libc++ -nostdinc++ -isystem \"/out/host-tools/libcxx-include\"", "LUDUS_BUILD_FLAVOR": "Profile", "LUDUS_PROFILING_ENABLED": "1", "compiler_version": "Homebrew clang version 23.1.3" }, "platform": "macOS-26.6-arm64-arm-64bit", "machine": "arm64", "cpu": "Apple M5", "logical_cpus": 10, "load_average_1_5_15_before": [ 10.82275390625, 24.6875, 24.22607421875 ], "load_average_1_5_15_after": [ 10.82275390625, 24.6875, 24.22607421875 ], "seed": 31, "processes_per_workload": 1, "method": "Each workload runs in a fresh process per round, in seeded random order; one warmup then seven timed samples per process. Rates are nanoseconds per workload operation; peak RSS is the process's ru_maxrss. No sanitizer, capture or CPU pinning; other host load is recorded as load averages, not controlled.", "process_runs": [ { "workload": "raw-contended-churn-4-threads", "process": 0, "order": 0, "wall_seconds": 0.1947720829921309, "peak_rss_kib": 12688, "exit_code": 0 }, { "workload": "raw-small-churn", "process": 0, "order": 1, "wall_seconds": 0.228218125004787, "peak_rss_kib": 1808, "exit_code": 0 }, { "workload": "system-large-blocks", "process": 0, "order": 2, "wall_seconds": 0.007997500011697412, "peak_rss_kib": 5568, "exit_code": 0 }, { "workload": "array-append-aligned64", "process": 0, "order": 3, "wall_seconds": 0.008942874992499128, "peak_rss_kib": 9776, "exit_code": 0 }, { "workload": "array-append-reserved", "process": 0, "order": 4, "wall_seconds": 0.009173124999506399, "peak_rss_kib": 5568, "exit_code": 0 }, { "workload": "system-contended-churn-4-threads", "process": 0, "order": 5, "wall_seconds": 0.2190948330098763, "peak_rss_kib": 8128, "exit_code": 0 }, { "workload": "system-remote-free", "process": 0, "order": 6, "wall_seconds": 0.025895957980537787, "peak_rss_kib": 6128, "exit_code": 0 }, { "workload": "system-small-churn", "process": 0, "order": 7, "wall_seconds": 0.31053829099982977, "peak_rss_kib": 1840, "exit_code": 0 }, { "workload": "array-append-unreserved", "process": 0, "order": 8, "wall_seconds": 0.01394962499034591, "peak_rss_kib": 9792, "exit_code": 0 }, { "workload": "idle", "process": 0, "order": 9, "wall_seconds": 0.007674041000427678, "peak_rss_kib": 1408, "exit_code": 0 } ], "summary": { "array-append-aligned64": { "samples": 7, "processes": 1, "ns_per_operation_median": 4.5115203857421875, "ns_per_operation_p25": 4.492759704589844, "ns_per_operation_p75": 4.524871826171875, "ns_per_operation_min": 4.4797210693359375, "ns_per_operation_max": 6.671905517578125, "peak_rss_kib_median": 9776.0, "peak_rss_kib_max": 9776.0 }, "array-append-reserved": { "samples": 7, "processes": 1, "ns_per_operation_median": 0.46495628356933594, 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"ns_per_operation_p75": 20.97924518585205, "ns_per_operation_min": 19.902746200561523, "ns_per_operation_max": 22.172768592834473, "peak_rss_kib_median": 12688.0, "peak_rss_kib_max": 12688.0 }, "raw-small-churn": { "samples": 7, "processes": 1, "ns_per_operation_median": 26.652256965637207, "ns_per_operation_p25": 26.4595947265625, "ns_per_operation_p75": 26.7273588180542, "ns_per_operation_min": 26.384790420532227, "ns_per_operation_max": 26.888608932495117, "peak_rss_kib_median": 1808.0, "peak_rss_kib_max": 1808.0 }, "system-contended-churn-4-threads": { "samples": 7, "processes": 1, "ns_per_operation_median": 23.79906177520752, "ns_per_operation_p25": 23.278474807739258, "ns_per_operation_p75": 24.390141487121582, "ns_per_operation_min": 21.453261375427246, "ns_per_operation_max": 25.995373725891113, "peak_rss_kib_median": 8128.0, "peak_rss_kib_max": 8128.0 }, "system-large-blocks": { "samples": 7, "processes": 1, "ns_per_operation_median": 5230.46875, "ns_per_operation_p25": 5227.859375, "ns_per_operation_p75": 5231.125, "ns_per_operation_min": 5216.15625, "ns_per_operation_max": 5236.96875, "peak_rss_kib_median": 5568.0, "peak_rss_kib_max": 5568.0 }, "system-remote-free": { "samples": 7, "processes": 1, "ns_per_operation_median": 15.415817260742188, "ns_per_operation_p25": 15.282951354980469, "ns_per_operation_p75": 16.09770965576172, "ns_per_operation_min": 15.218734741210938, "ns_per_operation_max": 18.445327758789062, "peak_rss_kib_median": 6128.0, "peak_rss_kib_max": 6128.0 }, "system-small-churn": { "samples": 7, "processes": 1, "ns_per_operation_median": 34.21986103057861, "ns_per_operation_p25": 33.969143867492676, "ns_per_operation_p75": 37.72091865539551, "ns_per_operation_min": 33.90614128112793, "ns_per_operation_max": 39.05677795410156, "peak_rss_kib_median": 1840.0, "peak_rss_kib_max": 1840.0 } }, "round": 1 }, { "revision": "ec577ca4bc9dc54c2650777cab5806274c2a3f7f", "working_tree_modified": true, "binary_sha256": "14e36178640be54dd23e20ad7ed714c741802b30226d28a1335e8a1df7009212", "build": { "CMAKE_BUILD_TYPE": "RelWithDebInfo", "CMAKE_CXX_COMPILER": "/out/host-tools/bin/clang++", "CMAKE_CXX_FLAGS": "-stdlib=libc++ -nostdinc++ -isystem \"/out/host-tools/libcxx-include\"", "LUDUS_BUILD_FLAVOR": "Profile", "LUDUS_PROFILING_ENABLED": "1", "compiler_version": "Homebrew clang version 23.1.3" }, "platform": "macOS-26.6-arm64-arm-64bit", "machine": "arm64", "cpu": "Apple M5", "logical_cpus": 10, "load_average_1_5_15_before": [ 10.5166015625, 24.3935546875, 24.125 ], "load_average_1_5_15_after": [ 10.5166015625, 24.3935546875, 24.125 ], "seed": 32, "processes_per_workload": 1, "method": "Each workload runs in a fresh process per round, in seeded random order; one warmup then seven timed samples per process. Rates are nanoseconds per workload operation; peak RSS is the process's ru_maxrss. No sanitizer, capture or CPU pinning; other host load is recorded as load averages, not controlled.", "process_runs": [ { "workload": "raw-contended-churn-4-threads", "process": 0, "order": 0, "wall_seconds": 0.19447866699192673, "peak_rss_kib": 4512, "exit_code": 0 }, { "workload": "system-remote-free", "process": 0, "order": 1, "wall_seconds": 0.024065750010777265, "peak_rss_kib": 6656, "exit_code": 0 }, { "workload": "idle", "process": 0, "order": 2, "wall_seconds": 0.005054500012192875, "peak_rss_kib": 1408, "exit_code": 0 }, { "workload": "array-append-reserved", "process": 0, "order": 3, "wall_seconds": 0.008929083996918052, "peak_rss_kib": 5584, "exit_code": 0 }, { "workload": "array-append-aligned64", "process": 0, "order": 4, "wall_seconds": 0.009965249977540225, "peak_rss_kib": 9792, "exit_code": 0 }, { "workload": "system-large-blocks", "process": 0, "order": 5, "wall_seconds": 0.00829395797336474, "peak_rss_kib": 5568, "exit_code": 0 }, { "workload": "array-append-unreserved", "process": 0, "order": 6, "wall_seconds": 0.014636457985034212, "peak_rss_kib": 13856, "exit_code": 0 }, { "workload": "raw-small-churn", "process": 0, "order": 7, "wall_seconds": 0.32718920800834894, "peak_rss_kib": 1840, "exit_code": 0 }, { "workload": "system-contended-churn-4-threads", "process": 0, "order": 8, "wall_seconds": 0.26708179200068116, "peak_rss_kib": 4976, "exit_code": 0 }, { "workload": "system-small-churn", "process": 0, "order": 9, "wall_seconds": 0.26354445901233703, "peak_rss_kib": 1824, "exit_code": 0 } ], "summary": { "array-append-aligned64": { "samples": 7, "processes": 1, "ns_per_operation_median": 5.3571014404296875, "ns_per_operation_p25": 5.0700531005859375, "ns_per_operation_p75": 5.56024169921875, "ns_per_operation_min": 5.0220489501953125, "ns_per_operation_max": 7.9816131591796875, "peak_rss_kib_median": 9792.0, "peak_rss_kib_max": 9792.0 }, "array-append-reserved": { "samples": 7, "processes": 1, "ns_per_operation_median": 0.5199508666992188, "ns_per_operation_p25": 0.519831657409668, "ns_per_operation_p75": 0.5201301574707031, "ns_per_operation_min": 0.5197124481201172, "ns_per_operation_max": 0.5234880447387695, "peak_rss_kib_median": 5584.0, "peak_rss_kib_max": 5584.0 }, "array-append-unreserved": { "samples": 7, "processes": 1, "ns_per_operation_median": 1.0159416198730469, "ns_per_operation_p25": 0.9154877662658691, "ns_per_operation_p75": 1.0589160919189453, "ns_per_operation_min": 0.8885469436645508, "ns_per_operation_max": 1.1086864471435547, "peak_rss_kib_median": 13856.0, "peak_rss_kib_max": 13856.0 }, "idle": { "samples": 7, "processes": 1, "ns_per_operation_median": 0.0, "ns_per_operation_p25": 0.0, "ns_per_operation_p75": 0.0, "ns_per_operation_min": 0.0, "ns_per_operation_max": 0.0, "peak_rss_kib_median": 1408.0, "peak_rss_kib_max": 1408.0 }, "raw-contended-churn-4-threads": { "samples": 7, "processes": 1, "ns_per_operation_median": 22.71000576019287, "ns_per_operation_p25": 22.17302703857422, "ns_per_operation_p75": 23.026466369628906, "ns_per_operation_min": 18.921574592590332, "ns_per_operation_max": 23.867289543151855, "peak_rss_kib_median": 4512.0, "peak_rss_kib_max": 4512.0 }, "raw-small-churn": { "samples": 7, "processes": 1, "ns_per_operation_median": 38.459022521972656, "ns_per_operation_p25": 35.97801923751831, "ns_per_operation_p75": 41.01214790344238, "ns_per_operation_min": 34.23261642456055, "ns_per_operation_max": 41.78909492492676, "peak_rss_kib_median": 1840.0, "peak_rss_kib_max": 1840.0 }, "system-contended-churn-4-threads": { "samples": 7, "processes": 1, "ns_per_operation_median": 29.03874683380127, "ns_per_operation_p25": 28.447190761566162, "ns_per_operation_p75": 29.59503698348999, "ns_per_operation_min": 25.426904678344727, "ns_per_operation_max": 35.2007942199707, "peak_rss_kib_median": 4976.0, "peak_rss_kib_max": 4976.0 }, "system-large-blocks": { "samples": 7, "processes": 1, "ns_per_operation_median": 5098.96875, "ns_per_operation_p25": 5050.78125, "ns_per_operation_p75": 5457.6875, "ns_per_operation_min": 4852.875, "ns_per_operation_max": 6381.5, "peak_rss_kib_median": 5568.0, "peak_rss_kib_max": 5568.0 }, "system-remote-free": { "samples": 7, "processes": 1, "ns_per_operation_median": 16.918182373046875, "ns_per_operation_p25": 14.803253173828125, "ns_per_operation_p75": 18.230125427246094, "ns_per_operation_min": 11.727645874023438, "ns_per_operation_max": 23.038238525390625, "peak_rss_kib_median": 6656.0, "peak_rss_kib_max": 6656.0 }, "system-small-churn": { "samples": 7, "processes": 1, "ns_per_operation_median": 29.8842191696167, "ns_per_operation_p25": 29.7297043800354, "ns_per_operation_p75": 30.08212661743164, "ns_per_operation_min": 29.528100967407227, "ns_per_operation_max": 33.19966793060303, "peak_rss_kib_median": 1824.0, "peak_rss_kib_max": 1824.0 } }, "round": 2 }, { "revision": "ec577ca4bc9dc54c2650777cab5806274c2a3f7f", "working_tree_modified": true, "binary_sha256": "14e36178640be54dd23e20ad7ed714c741802b30226d28a1335e8a1df7009212", "build": { "CMAKE_BUILD_TYPE": "RelWithDebInfo", "CMAKE_CXX_COMPILER": "/out/host-tools/bin/clang++", "CMAKE_CXX_FLAGS": "-stdlib=libc++ -nostdinc++ -isystem \"/out/host-tools/libcxx-include\"", "LUDUS_BUILD_FLAVOR": "Profile", "LUDUS_PROFILING_ENABLED": "1", "compiler_version": "Homebrew clang version 23.1.3" }, "platform": "macOS-26.6-arm64-arm-64bit", "machine": "arm64", "cpu": "Apple M5", "logical_cpus": 10, "load_average_1_5_15_before": [ 10.5166015625, 24.3935546875, 24.125 ], "load_average_1_5_15_after": [ 10.5166015625, 24.3935546875, 24.125 ], "seed": 33, "processes_per_workload": 1, "method": "Each workload runs in a fresh process per round, in seeded random order; one warmup then seven timed samples per process. Rates are nanoseconds per workload operation; peak RSS is the process's ru_maxrss. No sanitizer, capture or CPU pinning; other host load is recorded as load averages, not controlled.", "process_runs": [ { "workload": "idle", "process": 0, "order": 0, "wall_seconds": 0.004090665985131636, "peak_rss_kib": 1408, "exit_code": 0 }, { "workload": "raw-contended-churn-4-threads", "process": 0, "order": 1, "wall_seconds": 0.22012545898905955, "peak_rss_kib": 4224, "exit_code": 0 }, { "workload": "system-large-blocks", "process": 0, "order": 2, "wall_seconds": 0.0071041249902918935, "peak_rss_kib": 5584, "exit_code": 0 }, { "workload": "system-small-churn", "process": 0, "order": 3, "wall_seconds": 0.2680870420008432, "peak_rss_kib": 1872, "exit_code": 0 }, { "workload": "array-append-unreserved", "process": 0, "order": 4, "wall_seconds": 0.010293833998730406, "peak_rss_kib": 9792, "exit_code": 0 }, { "workload": "array-append-reserved", "process": 0, "order": 5, "wall_seconds": 0.008072458993410692, "peak_rss_kib": 5552, "exit_code": 0 }, { "workload": "system-remote-free", "process": 0, "order": 6, "wall_seconds": 0.018453249998856336, "peak_rss_kib": 6128, "exit_code": 0 }, { "workload": "system-contended-churn-4-threads", "process": 0, "order": 7, "wall_seconds": 0.2043403749994468, "peak_rss_kib": 7504, "exit_code": 0 }, { "workload": "raw-small-churn", "process": 0, "order": 8, "wall_seconds": 0.21560241701081395, "peak_rss_kib": 1808, "exit_code": 0 }, { "workload": "array-append-aligned64", "process": 0, "order": 9, "wall_seconds": 0.006670750008197501, "peak_rss_kib": 9792, "exit_code": 0 } ], "summary": { "array-append-aligned64": { "samples": 7, "processes": 1, "ns_per_operation_median": 4.0753631591796875, "ns_per_operation_p25": 4.074737548828125, "ns_per_operation_p75": 4.081092834472656, "ns_per_operation_min": 4.0740966796875, "ns_per_operation_max": 4.1554718017578125, "peak_rss_kib_median": 9792.0, "peak_rss_kib_max": 9792.0 }, "array-append-reserved": { "samples": 7, "processes": 1, "ns_per_operation_median": 0.4628896713256836, "ns_per_operation_p25": 0.46265077590942383, "ns_per_operation_p75": 0.47198963165283203, "ns_per_operation_min": 0.4622936248779297, "ns_per_operation_max": 0.47568511962890625, "peak_rss_kib_median": 5552.0, "peak_rss_kib_max": 5552.0 }, "array-append-unreserved": { "samples": 7, "processes": 1, "ns_per_operation_median": 0.5442695617675781, "ns_per_operation_p25": 0.5422039031982422, "ns_per_operation_p75": 0.5620121955871582, "ns_per_operation_min": 0.5261497497558594, "ns_per_operation_max": 0.6129741668701172, "peak_rss_kib_median": 9792.0, "peak_rss_kib_max": 9792.0 }, "idle": { "samples": 7, "processes": 1, "ns_per_operation_median": 0.0, "ns_per_operation_p25": 0.0, "ns_per_operation_p75": 0.0, "ns_per_operation_min": 0.0, "ns_per_operation_max": 0.0, "peak_rss_kib_median": 1408.0, "peak_rss_kib_max": 1408.0 }, "raw-contended-churn-4-threads": { "samples": 7, "processes": 1, "ns_per_operation_median": 26.378193855285645, "ns_per_operation_p25": 24.979690551757812, "ns_per_operation_p75": 27.00875186920166, "ns_per_operation_min": 23.86319637298584, "ns_per_operation_max": 27.70980167388916, "peak_rss_kib_median": 4224.0, "peak_rss_kib_max": 4224.0 }, "raw-small-churn": { "samples": 7, "processes": 1, "ns_per_operation_median": 24.06183910369873, "ns_per_operation_p25": 23.95846462249756, "ns_per_operation_p75": 25.545656204223633, "ns_per_operation_min": 23.73969554901123, "ns_per_operation_max": 26.393413543701172, "peak_rss_kib_median": 1808.0, "peak_rss_kib_max": 1808.0 }, "system-contended-churn-4-threads": { "samples": 7, "processes": 1, "ns_per_operation_median": 23.886839866638184, "ns_per_operation_p25": 23.281673431396484, "ns_per_operation_p75": 24.78990936279297, "ns_per_operation_min": 21.687786102294922, "ns_per_operation_max": 25.336305618286133, "peak_rss_kib_median": 7504.0, "peak_rss_kib_max": 7504.0 }, "system-large-blocks": { "samples": 7, "processes": 1, "ns_per_operation_median": 5868.46875, "ns_per_operation_p25": 5838.53125, "ns_per_operation_p75": 5893.234375, "ns_per_operation_min": 5658.84375, "ns_per_operation_max": 6351.5625, "peak_rss_kib_median": 5584.0, "peak_rss_kib_max": 5584.0 }, "system-remote-free": { "samples": 7, "processes": 1, "ns_per_operation_median": 14.59503173828125, "ns_per_operation_p25": 11.980369567871094, "ns_per_operation_p75": 14.717094421386719, "ns_per_operation_min": 10.080337524414062, "ns_per_operation_max": 15.92572021484375, "peak_rss_kib_median": 6128.0, "peak_rss_kib_max": 6128.0 }, "system-small-churn": { "samples": 7, "processes": 1, "ns_per_operation_median": 31.01181983947754, "ns_per_operation_p25": 30.289113521575928, "ns_per_operation_p75": 31.4786434173584, "ns_per_operation_min": 30.16845417022705, "ns_per_operation_max": 33.76197814941406, "peak_rss_kib_median": 1872.0, "peak_rss_kib_max": 1872.0 } }, "round": 3 }, { "revision": "ec577ca4bc9dc54c2650777cab5806274c2a3f7f", "working_tree_modified": true, "binary_sha256": "14e36178640be54dd23e20ad7ed714c741802b30226d28a1335e8a1df7009212", "build": { "CMAKE_BUILD_TYPE": "RelWithDebInfo", "CMAKE_CXX_COMPILER": "/out/host-tools/bin/clang++", "CMAKE_CXX_FLAGS": "-stdlib=libc++ -nostdinc++ -isystem \"/out/host-tools/libcxx-include\"", "LUDUS_BUILD_FLAVOR": "Profile", "LUDUS_PROFILING_ENABLED": "1", "compiler_version": "Homebrew clang version 23.1.3" }, "platform": "macOS-26.6-arm64-arm-64bit", "machine": "arm64", "cpu": "Apple M5", "logical_cpus": 10, "load_average_1_5_15_before": [ 10.23486328125, 24.1044921875, 24.0244140625 ], "load_average_1_5_15_after": [ 10.23486328125, 24.1044921875, 24.0244140625 ], "seed": 34, "processes_per_workload": 1, "method": "Each workload runs in a fresh process per round, in seeded random order; one warmup then seven timed samples per process. Rates are nanoseconds per workload operation; peak RSS is the process's ru_maxrss. No sanitizer, capture or CPU pinning; other host load is recorded as load averages, not controlled.", "process_runs": [ { "workload": "raw-small-churn", "process": 0, "order": 0, "wall_seconds": 0.24074074998497963, "peak_rss_kib": 1792, "exit_code": 0 }, { "workload": "raw-contended-churn-4-threads", "process": 0, "order": 1, "wall_seconds": 0.2052414579957258, "peak_rss_kib": 3936, "exit_code": 0 }, { "workload": "array-append-aligned64", "process": 0, "order": 2, "wall_seconds": 0.007726250012638047, "peak_rss_kib": 9792, "exit_code": 0 }, { "workload": "system-contended-churn-4-threads", "process": 0, "order": 3, "wall_seconds": 0.21724720898782834, "peak_rss_kib": 4144, "exit_code": 0 }, { "workload": "array-append-unreserved", "process": 0, "order": 4, "wall_seconds": 0.010737667005741969, "peak_rss_kib": 9792, "exit_code": 0 }, { "workload": "system-small-churn", "process": 0, "order": 5, "wall_seconds": 0.25893058397923596, "peak_rss_kib": 1824, "exit_code": 0 }, { "workload": "system-remote-free", "process": 0, "order": 6, "wall_seconds": 0.0196209579880815, "peak_rss_kib": 6656, "exit_code": 0 }, { "workload": "idle", "process": 0, "order": 7, "wall_seconds": 0.004120332974707708, "peak_rss_kib": 1408, "exit_code": 0 }, { "workload": "system-large-blocks", "process": 0, "order": 8, "wall_seconds": 0.005248125002253801, "peak_rss_kib": 5552, "exit_code": 0 }, { "workload": "array-append-reserved", "process": 0, "order": 9, "wall_seconds": 0.008351249998668209, "peak_rss_kib": 5568, "exit_code": 0 } ], "summary": { "array-append-aligned64": { "samples": 7, "processes": 1, "ns_per_operation_median": 5.0360260009765625, "ns_per_operation_p25": 5.022682189941406, "ns_per_operation_p75": 5.054786682128906, "ns_per_operation_min": 5.0150604248046875, "ns_per_operation_max": 5.1911773681640625, "peak_rss_kib_median": 9792.0, "peak_rss_kib_max": 9792.0 }, "array-append-reserved": { "samples": 7, "processes": 1, "ns_per_operation_median": 0.520268440246582, "ns_per_operation_p25": 0.5200700759887695, "ns_per_operation_p75": 0.5203485488891602, "ns_per_operation_min": 0.5199508666992188, "ns_per_operation_max": 0.5229310989379883, "peak_rss_kib_median": 5568.0, "peak_rss_kib_max": 5568.0 }, "array-append-unreserved": { "samples": 7, "processes": 1, "ns_per_operation_median": 0.5948543548583984, "ns_per_operation_p25": 0.5882582664489746, "ns_per_operation_p75": 0.5975966453552246, "ns_per_operation_min": 0.5865097045898438, "ns_per_operation_max": 0.6517171859741211, "peak_rss_kib_median": 9792.0, "peak_rss_kib_max": 9792.0 }, "idle": { "samples": 7, "processes": 1, "ns_per_operation_median": 0.0, "ns_per_operation_p25": 0.0, "ns_per_operation_p75": 0.0, "ns_per_operation_min": 0.0, "ns_per_operation_max": 0.0, "peak_rss_kib_median": 1408.0, "peak_rss_kib_max": 1408.0 }, "raw-contended-churn-4-threads": { "samples": 7, "processes": 1, "ns_per_operation_median": 22.77489471435547, "ns_per_operation_p25": 22.074639797210693, "ns_per_operation_p75": 23.65712308883667, "ns_per_operation_min": 21.144628524780273, "ns_per_operation_max": 25.327126502990723, "peak_rss_kib_median": 3936.0, "peak_rss_kib_max": 3936.0 }, "raw-small-churn": { "samples": 7, "processes": 1, "ns_per_operation_median": 27.83552837371826, "ns_per_operation_p25": 26.855846405029297, "ns_per_operation_p75": 28.88395404815674, "ns_per_operation_min": 26.099562644958496, "ns_per_operation_max": 31.979997634887695, "peak_rss_kib_median": 1792.0, "peak_rss_kib_max": 1792.0 }, "system-contended-churn-4-threads": { "samples": 7, "processes": 1, "ns_per_operation_median": 24.735530853271484, "ns_per_operation_p25": 23.883899211883545, "ns_per_operation_p75": 25.16007423400879, "ns_per_operation_min": 23.443142890930176, "ns_per_operation_max": 26.256839752197266, "peak_rss_kib_median": 4144.0, "peak_rss_kib_max": 4144.0 }, "system-large-blocks": { "samples": 7, "processes": 1, "ns_per_operation_median": 5826.8125, "ns_per_operation_p25": 5819.65625, "ns_per_operation_p75": 5855.453125, "ns_per_operation_min": 5817.6875, "ns_per_operation_max": 5869.8125, "peak_rss_kib_median": 5552.0, "peak_rss_kib_max": 5552.0 }, "system-remote-free": { "samples": 7, "processes": 1, "ns_per_operation_median": 12.2222900390625, "ns_per_operation_p25": 11.946044921875, "ns_per_operation_p75": 12.602485656738281, "ns_per_operation_min": 11.739730834960938, "ns_per_operation_max": 14.182403564453125, "peak_rss_kib_median": 6656.0, "peak_rss_kib_max": 6656.0 }, "system-small-churn": { "samples": 7, "processes": 1, "ns_per_operation_median": 30.21824359893799, "ns_per_operation_p25": 30.05544376373291, "ns_per_operation_p75": 30.407965183258057, "ns_per_operation_min": 29.86454963684082, "ns_per_operation_max": 30.91581630706787, "peak_rss_kib_median": 1824.0, "peak_rss_kib_max": 1824.0 } }, "round": 4 }, { "revision": "ec577ca4bc9dc54c2650777cab5806274c2a3f7f", "working_tree_modified": true, "binary_sha256": "14e36178640be54dd23e20ad7ed714c741802b30226d28a1335e8a1df7009212", "build": { "CMAKE_BUILD_TYPE": "RelWithDebInfo", "CMAKE_CXX_COMPILER": "/out/host-tools/bin/clang++", "CMAKE_CXX_FLAGS": "-stdlib=libc++ -nostdinc++ -isystem \"/out/host-tools/libcxx-include\"", "LUDUS_BUILD_FLAVOR": "Profile", "LUDUS_PROFILING_ENABLED": "1", "compiler_version": "Homebrew clang version 23.1.3" }, "platform": "macOS-26.6-arm64-arm-64bit", "machine": "arm64", "cpu": "Apple M5", "logical_cpus": 10, "load_average_1_5_15_before": [ 10.23486328125, 24.1044921875, 24.0244140625 ], "load_average_1_5_15_after": [ 10.5361328125, 23.9365234375, 23.96533203125 ], "seed": 35, "processes_per_workload": 1, "method": "Each workload runs in a fresh process per round, in seeded random order; one warmup then seven timed samples per process. Rates are nanoseconds per workload operation; peak RSS is the process's ru_maxrss. No sanitizer, capture or CPU pinning; other host load is recorded as load averages, not controlled.", "process_runs": [ { "workload": "idle", "process": 0, "order": 0, "wall_seconds": 0.004302624991396442, "peak_rss_kib": 1408, "exit_code": 0 }, { "workload": "system-contended-churn-4-threads", "process": 0, "order": 1, "wall_seconds": 0.1947275830025319, "peak_rss_kib": 5488, "exit_code": 0 }, { "workload": "raw-contended-churn-4-threads", "process": 0, "order": 2, "wall_seconds": 0.20753300000797026, "peak_rss_kib": 9008, "exit_code": 0 }, { "workload": "system-remote-free", "process": 0, "order": 3, "wall_seconds": 0.022825958003522828, "peak_rss_kib": 6656, "exit_code": 0 }, { "workload": "system-small-churn", "process": 0, "order": 4, "wall_seconds": 0.31626908300677314, "peak_rss_kib": 1856, "exit_code": 0 }, { "workload": "array-append-unreserved", "process": 0, "order": 5, "wall_seconds": 0.014576290996046737, "peak_rss_kib": 13872, "exit_code": 0 }, { "workload": "array-append-aligned64", "process": 0, "order": 6, "wall_seconds": 0.009312500013038516, "peak_rss_kib": 13840, "exit_code": 0 }, { "workload": "raw-small-churn", "process": 0, "order": 7, "wall_seconds": 0.3070923329796642, "peak_rss_kib": 1840, "exit_code": 0 }, { "workload": "system-large-blocks", "process": 0, "order": 8, "wall_seconds": 0.006281582987867296, "peak_rss_kib": 5568, "exit_code": 0 }, { "workload": "array-append-reserved", "process": 0, "order": 9, "wall_seconds": 0.009326750005129725, "peak_rss_kib": 5552, "exit_code": 0 } ], "summary": { "array-append-aligned64": { "samples": 7, "processes": 1, "ns_per_operation_median": 6.9497528076171875, "ns_per_operation_p25": 6.179801940917969, "ns_per_operation_p75": 7.9104156494140625, "ns_per_operation_min": 5.7703704833984375, "ns_per_operation_max": 8.947372436523438, "peak_rss_kib_median": 13840.0, "peak_rss_kib_max": 13840.0 }, "array-append-reserved": { "samples": 7, "processes": 1, "ns_per_operation_median": 0.520268440246582, "ns_per_operation_p25": 0.5199708938598633, "ns_per_operation_p75": 0.5220174789428711, "ns_per_operation_min": 0.5197925567626953, "ns_per_operation_max": 0.5536479949951172, "peak_rss_kib_median": 5552.0, "peak_rss_kib_max": 5552.0 }, "array-append-unreserved": { "samples": 7, "processes": 1, "ns_per_operation_median": 0.931422233581543, "ns_per_operation_p25": 0.8217892646789551, "ns_per_operation_p75": 1.0355119705200195, "ns_per_operation_min": 0.722010612487793, "ns_per_operation_max": 1.083970069885254, "peak_rss_kib_median": 13872.0, "peak_rss_kib_max": 13872.0 }, "idle": { "samples": 7, "processes": 1, "ns_per_operation_median": 0.0, "ns_per_operation_p25": 0.0, "ns_per_operation_p75": 0.0, "ns_per_operation_min": 0.0, "ns_per_operation_max": 0.0, "peak_rss_kib_median": 1408.0, "peak_rss_kib_max": 1408.0 }, "raw-contended-churn-4-threads": { "samples": 7, "processes": 1, "ns_per_operation_median": 24.029970169067383, "ns_per_operation_p25": 23.050367832183838, "ns_per_operation_p75": 24.971921920776367, "ns_per_operation_min": 22.059837341308594, "ns_per_operation_max": 25.859634399414062, "peak_rss_kib_median": 9008.0, "peak_rss_kib_max": 9008.0 }, "raw-small-churn": { "samples": 7, "processes": 1, "ns_per_operation_median": 34.56143569946289, "ns_per_operation_p25": 32.58158731460571, "ns_per_operation_p75": 38.84011507034302, "ns_per_operation_min": 30.595223426818848, "ns_per_operation_max": 39.07545471191406, "peak_rss_kib_median": 1840.0, "peak_rss_kib_max": 1840.0 }, "system-contended-churn-4-threads": { "samples": 7, "processes": 1, "ns_per_operation_median": 21.910587310791016, "ns_per_operation_p25": 20.417054176330566, "ns_per_operation_p75": 23.394484996795654, "ns_per_operation_min": 19.710302352905273, "ns_per_operation_max": 24.523219108581543, "peak_rss_kib_median": 5488.0, "peak_rss_kib_max": 5488.0 }, "system-large-blocks": { "samples": 7, "processes": 1, "ns_per_operation_median": 5878.90625, "ns_per_operation_p25": 5861.328125, "ns_per_operation_p75": 6148.4375, "ns_per_operation_min": 5828.125, "ns_per_operation_max": 8156.25, "peak_rss_kib_median": 5568.0, "peak_rss_kib_max": 5568.0 }, "system-remote-free": { "samples": 7, "processes": 1, "ns_per_operation_median": 13.949066162109375, "ns_per_operation_p25": 13.779319763183594, "ns_per_operation_p75": 14.208160400390625, "ns_per_operation_min": 13.532012939453125, "ns_per_operation_max": 16.9251708984375, "peak_rss_kib_median": 6656.0, "peak_rss_kib_max": 6656.0 }, "system-small-churn": { "samples": 7, "processes": 1, "ns_per_operation_median": 36.615570068359375, "ns_per_operation_p25": 34.53010320663452, "ns_per_operation_p75": 38.13310480117798, "ns_per_operation_min": 34.27072334289551, "ns_per_operation_max": 42.01956558227539, "peak_rss_kib_median": 1856.0, "peak_rss_kib_max": 1856.0 } }, "round": 5 }, { "revision": "ec577ca4bc9dc54c2650777cab5806274c2a3f7f", "working_tree_modified": true, "binary_sha256": "14e36178640be54dd23e20ad7ed714c741802b30226d28a1335e8a1df7009212", "build": { "CMAKE_BUILD_TYPE": "RelWithDebInfo", "CMAKE_CXX_COMPILER": "/out/host-tools/bin/clang++", "CMAKE_CXX_FLAGS": "-stdlib=libc++ -nostdinc++ -isystem \"/out/host-tools/libcxx-include\"", "LUDUS_BUILD_FLAVOR": "Profile", "LUDUS_PROFILING_ENABLED": "1", "compiler_version": "Homebrew clang version 23.1.3" }, "platform": "macOS-26.6-arm64-arm-64bit", "machine": "arm64", "cpu": "Apple M5", "logical_cpus": 10, "load_average_1_5_15_before": [ 10.2529296875, 23.6552734375, 23.86572265625 ], "load_average_1_5_15_after": [ 10.2529296875, 23.6552734375, 23.86572265625 ], "seed": 36, "processes_per_workload": 1, "method": "Each workload runs in a fresh process per round, in seeded random order; one warmup then seven timed samples per process. Rates are nanoseconds per workload operation; peak RSS is the process's ru_maxrss. No sanitizer, capture or CPU pinning; other host load is recorded as load averages, not controlled.", "process_runs": [ { "workload": "system-small-churn", "process": 0, "order": 0, "wall_seconds": 0.1899524579930585, "peak_rss_kib": 1840, "exit_code": 0 }, { "workload": "system-contended-churn-4-threads", "process": 0, "order": 1, "wall_seconds": 0.18355554100708105, "peak_rss_kib": 4160, "exit_code": 0 }, { "workload": "array-append-aligned64", "process": 0, "order": 2, "wall_seconds": 0.007188749994384125, "peak_rss_kib": 9792, "exit_code": 0 }, { "workload": "raw-contended-churn-4-threads", "process": 0, "order": 3, "wall_seconds": 0.19532349999644794, "peak_rss_kib": 4016, "exit_code": 0 }, { "workload": "array-append-unreserved", "process": 0, "order": 4, "wall_seconds": 0.009271916991565377, "peak_rss_kib": 9792, "exit_code": 0 }, { "workload": "raw-small-churn", "process": 0, "order": 5, "wall_seconds": 0.20501212499220856, "peak_rss_kib": 1792, "exit_code": 0 }, { "workload": "system-remote-free", "process": 0, "order": 6, "wall_seconds": 0.021822042006533593, "peak_rss_kib": 6128, "exit_code": 0 }, { "workload": "array-append-reserved", "process": 0, "order": 7, "wall_seconds": 0.0071240830002352595, "peak_rss_kib": 5568, "exit_code": 0 }, { "workload": "idle", "process": 0, "order": 8, "wall_seconds": 0.003086332988459617, "peak_rss_kib": 1408, "exit_code": 0 }, { "workload": "system-large-blocks", "process": 0, "order": 9, "wall_seconds": 0.004520124988630414, "peak_rss_kib": 5568, "exit_code": 0 } ], "summary": { "array-append-aligned64": { "samples": 7, "processes": 1, "ns_per_operation_median": 4.1014404296875, "ns_per_operation_p25": 4.098258972167969, "ns_per_operation_p75": 4.1042938232421875, "ns_per_operation_min": 4.094451904296875, "ns_per_operation_max": 4.1942596435546875, "peak_rss_kib_median": 9792.0, "peak_rss_kib_max": 9792.0 }, "array-append-reserved": { "samples": 7, "processes": 1, "ns_per_operation_median": 0.3974037170410156, "ns_per_operation_p25": 0.3950791358947754, "ns_per_operation_p75": 0.40070247650146484, "ns_per_operation_min": 0.3946218490600586, "ns_per_operation_max": 0.40392017364501953, "peak_rss_kib_median": 5568.0, "peak_rss_kib_max": 5568.0 }, "array-append-unreserved": { "samples": 7, "processes": 1, "ns_per_operation_median": 0.5357656478881836, "ns_per_operation_p25": 0.5292491912841797, "ns_per_operation_p75": 0.5637407302856445, "ns_per_operation_min": 0.5264682769775391, "ns_per_operation_max": 0.5962457656860352, "peak_rss_kib_median": 9792.0, "peak_rss_kib_max": 9792.0 }, "idle": { "samples": 7, "processes": 1, "ns_per_operation_median": 0.0, "ns_per_operation_p25": 0.0, "ns_per_operation_p75": 0.0, "ns_per_operation_min": 0.0, "ns_per_operation_max": 0.0, "peak_rss_kib_median": 1408.0, "peak_rss_kib_max": 1408.0 }, "raw-contended-churn-4-threads": { "samples": 7, "processes": 1, "ns_per_operation_median": 22.41162395477295, "ns_per_operation_p25": 21.397054195404053, "ns_per_operation_p75": 22.7882661819458, "ns_per_operation_min": 20.701448440551758, "ns_per_operation_max": 23.32484722137451, "peak_rss_kib_median": 4016.0, "peak_rss_kib_max": 4016.0 }, "raw-small-churn": { "samples": 7, "processes": 1, "ns_per_operation_median": 24.06303119659424, "ns_per_operation_p25": 22.804737091064453, "ns_per_operation_p75": 24.231791019439697, "ns_per_operation_min": 22.466341972351074, "ns_per_operation_max": 24.370431900024414, "peak_rss_kib_median": 1792.0, "peak_rss_kib_max": 1792.0 }, "system-contended-churn-4-threads": { "samples": 7, "processes": 1, "ns_per_operation_median": 20.839055061340332, "ns_per_operation_p25": 20.400663375854492, "ns_per_operation_p75": 21.82207489013672, "ns_per_operation_min": 20.039042472839355, "ns_per_operation_max": 22.615551948547363, "peak_rss_kib_median": 4160.0, "peak_rss_kib_max": 4160.0 }, "system-large-blocks": { "samples": 7, "processes": 1, "ns_per_operation_median": 4445.3125, "ns_per_operation_p25": 4444.671875, "ns_per_operation_p75": 4451.1875, "ns_per_operation_min": 4442.71875, "ns_per_operation_max": 4519.53125, "peak_rss_kib_median": 5568.0, "peak_rss_kib_max": 5568.0 }, "system-remote-free": { "samples": 7, "processes": 1, "ns_per_operation_median": 9.538009643554688, "ns_per_operation_p25": 9.339012145996094, "ns_per_operation_p75": 9.645782470703125, "ns_per_operation_min": 9.218856811523438, "ns_per_operation_max": 10.570526123046875, "peak_rss_kib_median": 6128.0, "peak_rss_kib_max": 6128.0 }, "system-small-churn": { "samples": 7, "processes": 1, "ns_per_operation_median": 21.774967193603516, "ns_per_operation_p25": 21.541992664337158, "ns_per_operation_p75": 22.656719207763672, "ns_per_operation_min": 21.254380226135254, "ns_per_operation_max": 22.947510719299316, "peak_rss_kib_median": 1840.0, "peak_rss_kib_max": 1840.0 } }, "round": 6 } ] }