{ "variant": "after", "rounds": [ { "revision": "ec577ca4bc9dc54c2650777cab5806274c2a3f7f", "working_tree_modified": true, "binary_sha256": "5d950b86630ca65681b263efd07b4c5620377fb39d25c65b08f89db595ca6b3a", "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": [ 10.5166015625, 24.3935546875, 24.125 ], "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": 0.23351979200378992, "peak_rss_kib": 12336, "exit_code": 0 }, { "workload": "raw-small-churn", "process": 0, "order": 1, "wall_seconds": 0.2758357920101844, "peak_rss_kib": 1760, "exit_code": 0 }, { "workload": "system-large-blocks", "process": 0, "order": 2, "wall_seconds": 0.008781000011367723, "peak_rss_kib": 5536, "exit_code": 0 }, { "workload": "array-append-aligned64", "process": 0, "order": 3, "wall_seconds": 0.009160624991636723, "peak_rss_kib": 9760, "exit_code": 0 }, { "workload": "array-append-reserved", "process": 0, "order": 4, "wall_seconds": 0.010175167000852525, "peak_rss_kib": 5536, "exit_code": 0 }, { "workload": "system-contended-churn-4-threads", "process": 0, "order": 5, "wall_seconds": 1.485050792020047, "peak_rss_kib": 2688, "exit_code": 0 }, { "workload": "system-remote-free", "process": 0, "order": 6, "wall_seconds": 0.02413850001175888, "peak_rss_kib": 6096, "exit_code": 0 }, { "workload": "system-small-churn", "process": 0, "order": 7, "wall_seconds": 0.3008570829988457, "peak_rss_kib": 1808, "exit_code": 0 }, { "workload": "array-append-unreserved", "process": 0, "order": 8, "wall_seconds": 0.009953333996236324, "peak_rss_kib": 9760, "exit_code": 0 }, { "workload": "idle", "process": 0, "order": 9, "wall_seconds": 0.007490167015930638, "peak_rss_kib": 1360, "exit_code": 0 } ], "summary": { "array-append-aligned64": { "samples": 7, "processes": 1, "ns_per_operation_median": 5.10406494140625, "ns_per_operation_p25": 5.0900726318359375, "ns_per_operation_p75": 5.1097869873046875, "ns_per_operation_min": 5.08245849609375, "ns_per_operation_max": 5.26556396484375, "peak_rss_kib_median": 9760.0, "peak_rss_kib_max": 9760.0 }, "array-append-reserved": { "samples": 7, "processes": 1, "ns_per_operation_median": 0.5201892852783203, 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"ns_per_operation_p75": 26.73602056503296, "ns_per_operation_min": 23.65537452697754, "ns_per_operation_max": 31.557759284973145, "peak_rss_kib_median": 12336.0, "peak_rss_kib_max": 12336.0 }, "raw-small-churn": { "samples": 7, "processes": 1, "ns_per_operation_median": 31.22409152984619, "ns_per_operation_p25": 29.530107975006104, "ns_per_operation_p75": 33.3713493347168, "ns_per_operation_min": 29.446721076965332, "ns_per_operation_max": 33.71310234069824, "peak_rss_kib_median": 1760.0, "peak_rss_kib_max": 1760.0 }, "system-contended-churn-4-threads": { "samples": 7, "processes": 1, "ns_per_operation_median": 174.60358142852783, "ns_per_operation_p25": 169.4632968902588, "ns_per_operation_p75": 181.7285418510437, "ns_per_operation_min": 166.85028839111328, "ns_per_operation_max": 194.84472274780273, "peak_rss_kib_median": 2688.0, "peak_rss_kib_max": 2688.0 }, "system-large-blocks": { "samples": 7, "processes": 1, "ns_per_operation_median": 5860.6875, "ns_per_operation_p25": 5856.78125, "ns_per_operation_p75": 5867.84375, "ns_per_operation_min": 5851.5625, "ns_per_operation_max": 6084.65625, "peak_rss_kib_median": 5536.0, "peak_rss_kib_max": 5536.0 }, "system-remote-free": { "samples": 7, "processes": 1, "ns_per_operation_median": 13.895660400390625, "ns_per_operation_p25": 13.781867980957031, "ns_per_operation_p75": 14.043174743652344, "ns_per_operation_min": 13.762786865234375, "ns_per_operation_max": 14.452621459960938, "peak_rss_kib_median": 6096.0, "peak_rss_kib_max": 6096.0 }, "system-small-churn": { "samples": 7, "processes": 1, "ns_per_operation_median": 32.89926052093506, "ns_per_operation_p25": 31.51029348373413, "ns_per_operation_p75": 34.545958518981934, "ns_per_operation_min": 29.73167133331299, "ns_per_operation_max": 49.44066143035889, "peak_rss_kib_median": 1808.0, "peak_rss_kib_max": 1808.0 } }, "round": 1 }, { "revision": "ec577ca4bc9dc54c2650777cab5806274c2a3f7f", "working_tree_modified": true, "binary_sha256": "5d950b86630ca65681b263efd07b4c5620377fb39d25c65b08f89db595ca6b3a", "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": 0.2183219580037985, "peak_rss_kib": 3936, "exit_code": 0 }, { "workload": "system-remote-free", "process": 0, "order": 1, "wall_seconds": 0.02489191698259674, "peak_rss_kib": 6096, "exit_code": 0 }, { "workload": "idle", "process": 0, "order": 2, "wall_seconds": 0.004167666018474847, "peak_rss_kib": 1360, "exit_code": 0 }, { "workload": "array-append-reserved", "process": 0, "order": 3, "wall_seconds": 0.007755791011732072, "peak_rss_kib": 5536, "exit_code": 0 }, { "workload": "array-append-aligned64", "process": 0, "order": 4, "wall_seconds": 0.009372125001391396, "peak_rss_kib": 9968, "exit_code": 0 }, { "workload": "system-large-blocks", "process": 0, "order": 5, "wall_seconds": 0.005034750007325783, "peak_rss_kib": 5536, "exit_code": 0 }, { "workload": "array-append-unreserved", "process": 0, "order": 6, "wall_seconds": 0.008358458988368511, "peak_rss_kib": 9760, "exit_code": 0 }, { "workload": "raw-small-churn", "process": 0, "order": 7, "wall_seconds": 0.21254829200915992, "peak_rss_kib": 1744, "exit_code": 0 }, { "workload": "system-contended-churn-4-threads", "process": 0, "order": 8, "wall_seconds": 1.284834000020055, "peak_rss_kib": 2704, "exit_code": 0 }, { "workload": "system-small-churn", "process": 0, "order": 9, "wall_seconds": 0.23788724999758415, "peak_rss_kib": 1776, "exit_code": 0 } ], "summary": { "array-append-aligned64": { "samples": 7, "processes": 1, "ns_per_operation_median": 4.5095977783203125, "ns_per_operation_p25": 4.466064453125, "ns_per_operation_p75": 4.73944091796875, "ns_per_operation_min": 4.4600067138671875, "ns_per_operation_max": 6.0272216796875, "peak_rss_kib_median": 9968.0, "peak_rss_kib_max": 9968.0 }, "array-append-reserved": { "samples": 7, "processes": 1, "ns_per_operation_median": 0.4625711441040039, "ns_per_operation_p25": 0.46239280700683594, "ns_per_operation_p75": 0.46259164810180664, "ns_per_operation_min": 0.46221446990966797, "ns_per_operation_max": 0.4653139114379883, "peak_rss_kib_median": 5536.0, "peak_rss_kib_max": 5536.0 }, "array-append-unreserved": { "samples": 7, "processes": 1, "ns_per_operation_median": 0.5387859344482422, "ns_per_operation_p25": 0.532686710357666, "ns_per_operation_p75": 0.5395412445068359, "ns_per_operation_min": 0.5235671997070312, "ns_per_operation_max": 0.5419254302978516, "peak_rss_kib_median": 9760.0, "peak_rss_kib_max": 9760.0 }, "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": 1360.0, "peak_rss_kib_max": 1360.0 }, "raw-contended-churn-4-threads": { "samples": 7, "processes": 1, "ns_per_operation_median": 25.210976600646973, "ns_per_operation_p25": 24.787346839904785, "ns_per_operation_p75": 26.231805324554443, "ns_per_operation_min": 23.654460906982422, "ns_per_operation_max": 27.392864227294922, "peak_rss_kib_median": 3936.0, "peak_rss_kib_max": 3936.0 }, "raw-small-churn": { "samples": 7, "processes": 1, "ns_per_operation_median": 24.178624153137207, "ns_per_operation_p25": 24.106820583343506, "ns_per_operation_p75": 24.808863639831543, "ns_per_operation_min": 24.00477695465088, "ns_per_operation_max": 26.223182678222656, "peak_rss_kib_median": 1744.0, "peak_rss_kib_max": 1744.0 }, "system-contended-churn-4-threads": { "samples": 7, "processes": 1, "ns_per_operation_median": 155.72190284729004, "ns_per_operation_p25": 152.60728216171265, "ns_per_operation_p75": 157.0442714691162, "ns_per_operation_min": 144.92233562469482, "ns_per_operation_max": 159.40431690216064, "peak_rss_kib_median": 2704.0, "peak_rss_kib_max": 2704.0 }, "system-large-blocks": { "samples": 7, "processes": 1, "ns_per_operation_median": 5188.8125, "ns_per_operation_p25": 5187.484375, "ns_per_operation_p75": 5214.859375, "ns_per_operation_min": 5179.6875, "ns_per_operation_max": 5251.3125, "peak_rss_kib_median": 5536.0, "peak_rss_kib_max": 5536.0 }, "system-remote-free": { "samples": 7, "processes": 1, "ns_per_operation_median": 15.923812866210938, "ns_per_operation_p25": 15.728958129882812, "ns_per_operation_p75": 17.090805053710938, "ns_per_operation_min": 13.783782958984375, "ns_per_operation_max": 17.507553100585938, "peak_rss_kib_median": 6096.0, "peak_rss_kib_max": 6096.0 }, "system-small-churn": { "samples": 7, "processes": 1, "ns_per_operation_median": 26.48886013031006, "ns_per_operation_p25": 26.36563777923584, "ns_per_operation_p75": 28.473198890686035, "ns_per_operation_min": 26.3538761138916, "ns_per_operation_max": 29.168804168701172, "peak_rss_kib_median": 1776.0, "peak_rss_kib_max": 1776.0 } }, "round": 2 }, { "revision": "ec577ca4bc9dc54c2650777cab5806274c2a3f7f", "working_tree_modified": true, "binary_sha256": "5d950b86630ca65681b263efd07b4c5620377fb39d25c65b08f89db595ca6b3a", "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": [ 10.23486328125, 24.1044921875, 24.0244140625 ], "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": 0.0038228340272326022, "peak_rss_kib": 1360, "exit_code": 0 }, { "workload": "raw-contended-churn-4-threads", "process": 0, "order": 1, "wall_seconds": 0.19553829199867323, "peak_rss_kib": 11808, "exit_code": 0 }, { "workload": "system-large-blocks", "process": 0, "order": 2, "wall_seconds": 0.0053714169771410525, "peak_rss_kib": 5536, "exit_code": 0 }, { "workload": "system-small-churn", "process": 0, "order": 3, "wall_seconds": 0.2292618330102414, "peak_rss_kib": 1792, "exit_code": 0 }, { "workload": "array-append-unreserved", "process": 0, "order": 4, "wall_seconds": 0.012539749994175509, "peak_rss_kib": 9760, "exit_code": 0 }, { "workload": "array-append-reserved", "process": 0, "order": 5, "wall_seconds": 0.007019625016255304, "peak_rss_kib": 5536, "exit_code": 0 }, { "workload": "system-remote-free", "process": 0, "order": 6, "wall_seconds": 0.017176708002807572, "peak_rss_kib": 6096, "exit_code": 0 }, { "workload": "system-contended-churn-4-threads", "process": 0, "order": 7, "wall_seconds": 1.2350877500139177, "peak_rss_kib": 2720, "exit_code": 0 }, { "workload": "raw-small-churn", "process": 0, "order": 8, "wall_seconds": 0.20132483300403692, "peak_rss_kib": 1744, "exit_code": 0 }, { "workload": "array-append-aligned64", "process": 0, "order": 9, "wall_seconds": 0.006098207988543436, "peak_rss_kib": 9760, "exit_code": 0 } ], "summary": { "array-append-aligned64": { "samples": 7, "processes": 1, "ns_per_operation_median": 3.7930755615234375, "ns_per_operation_p25": 3.7905426025390625, "ns_per_operation_p75": 3.7959442138671875, "ns_per_operation_min": 3.786712646484375, "ns_per_operation_max": 3.868743896484375, "peak_rss_kib_median": 9760.0, "peak_rss_kib_max": 9760.0 }, "array-append-reserved": { "samples": 7, "processes": 1, "ns_per_operation_median": 0.39517879486083984, "ns_per_operation_p25": 0.39511919021606445, "ns_per_operation_p75": 0.40004682540893555, "ns_per_operation_min": 0.39501953125, "ns_per_operation_max": 0.40308666229248047, "peak_rss_kib_median": 5536.0, "peak_rss_kib_max": 5536.0 }, "array-append-unreserved": { "samples": 7, "processes": 1, "ns_per_operation_median": 0.4839897155761719, "ns_per_operation_p25": 0.47594308853149414, "ns_per_operation_p75": 0.4913806915283203, "ns_per_operation_min": 0.4545450210571289, "ns_per_operation_max": 0.5462169647216797, "peak_rss_kib_median": 9760.0, "peak_rss_kib_max": 9760.0 }, "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": 1360.0, "peak_rss_kib_max": 1360.0 }, "raw-contended-churn-4-threads": { "samples": 7, "processes": 1, "ns_per_operation_median": 20.859360694885254, "ns_per_operation_p25": 20.75686025619507, "ns_per_operation_p75": 23.240546226501465, "ns_per_operation_min": 20.252267837524414, "ns_per_operation_max": 26.47844886779785, "peak_rss_kib_median": 11808.0, "peak_rss_kib_max": 11808.0 }, "raw-small-churn": { "samples": 7, "processes": 1, "ns_per_operation_median": 23.549994468688965, "ns_per_operation_p25": 22.32813835144043, "ns_per_operation_p75": 24.01814889907837, "ns_per_operation_min": 22.176544189453125, "ns_per_operation_max": 24.726510047912598, "peak_rss_kib_median": 1744.0, "peak_rss_kib_max": 1744.0 }, "system-contended-churn-4-threads": { "samples": 7, "processes": 1, "ns_per_operation_median": 146.81216049194336, "ns_per_operation_p25": 145.4699239730835, "ns_per_operation_p75": 150.15037870407104, "ns_per_operation_min": 143.61389541625977, "ns_per_operation_max": 153.16669178009033, "peak_rss_kib_median": 2720.0, "peak_rss_kib_max": 2720.0 }, "system-large-blocks": { "samples": 7, "processes": 1, "ns_per_operation_median": 5188.8125, "ns_per_operation_p25": 5188.140625, "ns_per_operation_p75": 5194.015625, "ns_per_operation_min": 5187.5, "ns_per_operation_max": 5251.3125, "peak_rss_kib_median": 5536.0, "peak_rss_kib_max": 5536.0 }, "system-remote-free": { "samples": 7, "processes": 1, "ns_per_operation_median": 12.912750244140625, "ns_per_operation_p25": 10.631553649902344, "ns_per_operation_p75": 13.227142333984375, "ns_per_operation_min": 10.434478759765625, "ns_per_operation_max": 15.285491943359375, "peak_rss_kib_median": 6096.0, "peak_rss_kib_max": 6096.0 }, "system-small-churn": { "samples": 7, "processes": 1, "ns_per_operation_median": 26.30945110321045, "ns_per_operation_p25": 26.265323162078857, "ns_per_operation_p75": 27.07850933074951, "ns_per_operation_min": 24.42367935180664, "ns_per_operation_max": 28.766592025756836, "peak_rss_kib_median": 1792.0, "peak_rss_kib_max": 1792.0 } }, "round": 3 }, { "revision": "ec577ca4bc9dc54c2650777cab5806274c2a3f7f", "working_tree_modified": true, "binary_sha256": "5d950b86630ca65681b263efd07b4c5620377fb39d25c65b08f89db595ca6b3a", "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": 0.18494325000210665, "peak_rss_kib": 1760, "exit_code": 0 }, { "workload": "raw-contended-churn-4-threads", "process": 0, "order": 1, "wall_seconds": 0.18546999999671243, "peak_rss_kib": 3728, "exit_code": 0 }, { "workload": "array-append-aligned64", "process": 0, "order": 2, "wall_seconds": 0.0063512919878121465, "peak_rss_kib": 9760, "exit_code": 0 }, { "workload": "system-contended-churn-4-threads", "process": 0, "order": 3, "wall_seconds": 1.3936339170031715, "peak_rss_kib": 2688, "exit_code": 0 }, { "workload": "array-append-unreserved", "process": 0, "order": 4, "wall_seconds": 0.04914258301141672, "peak_rss_kib": 11760, "exit_code": 0 }, { "workload": "system-small-churn", "process": 0, "order": 5, "wall_seconds": 0.25461787497624755, "peak_rss_kib": 1792, "exit_code": 0 }, { "workload": "system-remote-free", "process": 0, "order": 6, "wall_seconds": 0.022108208999270573, "peak_rss_kib": 6096, "exit_code": 0 }, { "workload": "idle", "process": 0, "order": 7, "wall_seconds": 0.004465874982997775, "peak_rss_kib": 1360, "exit_code": 0 }, { "workload": "system-large-blocks", "process": 0, "order": 8, "wall_seconds": 0.004893625009572133, "peak_rss_kib": 5536, "exit_code": 0 }, { "workload": "array-append-reserved", "process": 0, "order": 9, "wall_seconds": 0.010715665994212031, "peak_rss_kib": 5536, "exit_code": 0 } ], "summary": { "array-append-aligned64": { "samples": 7, "processes": 1, "ns_per_operation_median": 4.06646728515625, "ns_per_operation_p25": 4.0652008056640625, "ns_per_operation_p75": 4.07568359375, "ns_per_operation_min": 4.06329345703125, "ns_per_operation_max": 4.1643829345703125, "peak_rss_kib_median": 9760.0, "peak_rss_kib_max": 9760.0 }, "array-append-reserved": { "samples": 7, "processes": 1, "ns_per_operation_median": 0.4650754928588867, "ns_per_operation_p25": 0.4630880355834961, "ns_per_operation_p75": 0.47181034088134766, "ns_per_operation_min": 0.46221446990966797, "ns_per_operation_max": 0.5195140838623047, "peak_rss_kib_median": 5536.0, "peak_rss_kib_max": 5536.0 }, "array-append-unreserved": { "samples": 7, "processes": 1, "ns_per_operation_median": 0.534693717956543, "ns_per_operation_p25": 0.5327262878417969, "ns_per_operation_p75": 0.5868077278137207, "ns_per_operation_min": 0.5205469131469727, "ns_per_operation_max": 1.0421276092529297, "peak_rss_kib_median": 11760.0, "peak_rss_kib_max": 11760.0 }, "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": 1360.0, "peak_rss_kib_max": 1360.0 }, "raw-contended-churn-4-threads": { "samples": 7, "processes": 1, "ns_per_operation_median": 21.56643009185791, "ns_per_operation_p25": 20.74827766418457, "ns_per_operation_p75": 22.192835807800293, "ns_per_operation_min": 20.239154815673828, "ns_per_operation_max": 22.95362949371338, "peak_rss_kib_median": 3728.0, "peak_rss_kib_max": 3728.0 }, "raw-small-churn": { "samples": 7, "processes": 1, "ns_per_operation_median": 21.021763801574707, "ns_per_operation_p25": 20.98768949508667, "ns_per_operation_p75": 21.891375064849854, "ns_per_operation_min": 20.878950119018555, "ns_per_operation_max": 22.264281272888184, "peak_rss_kib_median": 1760.0, "peak_rss_kib_max": 1760.0 }, "system-contended-churn-4-threads": { "samples": 7, "processes": 1, "ns_per_operation_median": 157.56527519226074, "ns_per_operation_p25": 146.1213436126709, "ns_per_operation_p75": 194.19743633270264, "ns_per_operation_min": 140.0219602584839, "ns_per_operation_max": 203.56444549560547, "peak_rss_kib_median": 2688.0, "peak_rss_kib_max": 2688.0 }, "system-large-blocks": { "samples": 7, "processes": 1, "ns_per_operation_median": 5277.34375, "ns_per_operation_p25": 5272.796875, "ns_per_operation_p75": 5295.5625, "ns_per_operation_min": 5261.71875, "ns_per_operation_max": 5662.75, "peak_rss_kib_median": 5536.0, "peak_rss_kib_max": 5536.0 }, "system-remote-free": { "samples": 7, "processes": 1, "ns_per_operation_median": 13.881683349609375, "ns_per_operation_p25": 12.325920104980469, "ns_per_operation_p75": 14.896392822265625, "ns_per_operation_min": 12.223556518554688, "ns_per_operation_max": 15.047714233398438, "peak_rss_kib_median": 6096.0, "peak_rss_kib_max": 6096.0 }, "system-small-churn": { "samples": 7, "processes": 1, "ns_per_operation_median": 28.933167457580566, "ns_per_operation_p25": 28.74314785003662, "ns_per_operation_p75": 30.024667263031006, "ns_per_operation_min": 28.5528507232666, "ns_per_operation_max": 31.267921447753906, "peak_rss_kib_median": 1792.0, "peak_rss_kib_max": 1792.0 } }, "round": 4 }, { "revision": "ec577ca4bc9dc54c2650777cab5806274c2a3f7f", "working_tree_modified": true, "binary_sha256": "5d950b86630ca65681b263efd07b4c5620377fb39d25c65b08f89db595ca6b3a", "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": [ 10.5361328125, 23.9365234375, 23.96533203125 ], "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": 0.00485562501125969, "peak_rss_kib": 1360, "exit_code": 0 }, { "workload": "system-contended-churn-4-threads", "process": 0, "order": 1, "wall_seconds": 1.6544202499790117, "peak_rss_kib": 2688, "exit_code": 0 }, { "workload": "raw-contended-churn-4-threads", "process": 0, "order": 2, "wall_seconds": 0.2085804590024054, "peak_rss_kib": 5040, "exit_code": 0 }, { "workload": "system-remote-free", "process": 0, "order": 3, "wall_seconds": 0.023401042009936646, "peak_rss_kib": 6096, "exit_code": 0 }, { "workload": "system-small-churn", "process": 0, "order": 4, "wall_seconds": 0.2907733749889303, "peak_rss_kib": 1792, "exit_code": 0 }, { "workload": "array-append-unreserved", "process": 0, "order": 5, "wall_seconds": 0.00836800000979565, "peak_rss_kib": 9760, "exit_code": 0 }, { "workload": "array-append-aligned64", "process": 0, "order": 6, "wall_seconds": 0.0069568330072797835, "peak_rss_kib": 9760, "exit_code": 0 }, { "workload": "raw-small-churn", "process": 0, "order": 7, "wall_seconds": 0.23039074998814613, "peak_rss_kib": 1744, "exit_code": 0 }, { "workload": "system-large-blocks", "process": 0, "order": 8, "wall_seconds": 0.005178124993108213, "peak_rss_kib": 5536, "exit_code": 0 }, { "workload": "array-append-reserved", "process": 0, "order": 9, "wall_seconds": 0.007271082984516397, "peak_rss_kib": 5536, "exit_code": 0 } ], "summary": { "array-append-aligned64": { "samples": 7, "processes": 1, "ns_per_operation_median": 4.5623779296875, "ns_per_operation_p25": 4.532173156738281, "ns_per_operation_p75": 4.6084747314453125, "ns_per_operation_min": 4.50579833984375, "ns_per_operation_max": 4.6513824462890625, "peak_rss_kib_median": 9760.0, "peak_rss_kib_max": 9760.0 }, "array-append-reserved": { "samples": 7, "processes": 1, "ns_per_operation_median": 0.46221446990966797, "ns_per_operation_p25": 0.4620552062988281, "ns_per_operation_p75": 0.46366453170776367, "ns_per_operation_min": 0.46193599700927734, "ns_per_operation_max": 0.46984386444091797, "peak_rss_kib_median": 5536.0, "peak_rss_kib_max": 5536.0 }, "array-append-unreserved": { "samples": 7, "processes": 1, "ns_per_operation_median": 0.5286130905151367, "ns_per_operation_p25": 0.524500846862793, "ns_per_operation_p75": 0.533759593963623, "ns_per_operation_min": 0.5193948745727539, "ns_per_operation_max": 0.5371971130371094, "peak_rss_kib_median": 9760.0, "peak_rss_kib_max": 9760.0 }, "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": 1360.0, "peak_rss_kib_max": 1360.0 }, "raw-contended-churn-4-threads": { "samples": 7, "processes": 1, "ns_per_operation_median": 22.476911544799805, "ns_per_operation_p25": 22.12536382675171, "ns_per_operation_p75": 23.75809335708618, "ns_per_operation_min": 21.396636962890625, "ns_per_operation_max": 27.455925941467285, "peak_rss_kib_median": 5040.0, "peak_rss_kib_max": 5040.0 }, "raw-small-churn": { "samples": 7, "processes": 1, "ns_per_operation_median": 26.439745903015137, "ns_per_operation_p25": 26.333789348602295, "ns_per_operation_p75": 26.63975954055786, "ns_per_operation_min": 26.129801750183105, "ns_per_operation_max": 26.72410011291504, "peak_rss_kib_median": 1744.0, "peak_rss_kib_max": 1744.0 }, "system-contended-churn-4-threads": { "samples": 7, "processes": 1, "ns_per_operation_median": 197.0648365020752, "ns_per_operation_p25": 194.83137130737305, "ns_per_operation_p75": 199.0230484008789, "ns_per_operation_min": 183.43822193145752, "ns_per_operation_max": 203.59599590301514, "peak_rss_kib_median": 2688.0, "peak_rss_kib_max": 2688.0 }, "system-large-blocks": { "samples": 7, "processes": 1, "ns_per_operation_median": 5246.09375, "ns_per_operation_p25": 5240.234375, "ns_per_operation_p75": 5262.375, "ns_per_operation_min": 5222.65625, "ns_per_operation_max": 5539.0625, "peak_rss_kib_median": 5536.0, "peak_rss_kib_max": 5536.0 }, "system-remote-free": { "samples": 7, "processes": 1, "ns_per_operation_median": 13.761520385742188, "ns_per_operation_p25": 13.750717163085938, "ns_per_operation_p75": 13.782180786132812, "ns_per_operation_min": 13.742446899414062, "ns_per_operation_max": 17.320632934570312, "peak_rss_kib_median": 6096.0, "peak_rss_kib_max": 6096.0 }, "system-small-churn": { "samples": 7, "processes": 1, "ns_per_operation_median": 32.34072494506836, "ns_per_operation_p25": 32.31863212585449, "ns_per_operation_p75": 35.86701536178589, "ns_per_operation_min": 31.3933687210083, "ns_per_operation_max": 40.17432498931885, "peak_rss_kib_median": 1792.0, "peak_rss_kib_max": 1792.0 } }, "round": 5 }, { "revision": "ec577ca4bc9dc54c2650777cab5806274c2a3f7f", "working_tree_modified": true, "binary_sha256": "5d950b86630ca65681b263efd07b4c5620377fb39d25c65b08f89db595ca6b3a", "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": [ 10.5361328125, 23.9365234375, 23.96533203125 ], "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": 0.2669076670135837, "peak_rss_kib": 1824, "exit_code": 0 }, { "workload": "system-contended-churn-4-threads", "process": 0, "order": 1, "wall_seconds": 1.349622832989553, "peak_rss_kib": 2704, "exit_code": 0 }, { "workload": "array-append-aligned64", "process": 0, "order": 2, "wall_seconds": 0.006631291995290667, "peak_rss_kib": 9760, "exit_code": 0 }, { "workload": "raw-contended-churn-4-threads", "process": 0, "order": 3, "wall_seconds": 0.211416833975818, "peak_rss_kib": 4080, "exit_code": 0 }, { "workload": "array-append-unreserved", "process": 0, "order": 4, "wall_seconds": 0.009755375009262934, "peak_rss_kib": 9760, "exit_code": 0 }, { "workload": "raw-small-churn", "process": 0, "order": 5, "wall_seconds": 0.20885358299710788, "peak_rss_kib": 1760, "exit_code": 0 }, { "workload": "system-remote-free", "process": 0, "order": 6, "wall_seconds": 0.017486374999862164, "peak_rss_kib": 6096, "exit_code": 0 }, { "workload": "array-append-reserved", "process": 0, "order": 7, "wall_seconds": 0.00689250000868924, "peak_rss_kib": 5536, "exit_code": 0 }, { "workload": "idle", "process": 0, "order": 8, "wall_seconds": 0.003074542008107528, "peak_rss_kib": 1360, "exit_code": 0 }, { "workload": "system-large-blocks", "process": 0, "order": 9, "wall_seconds": 0.004146499995840713, "peak_rss_kib": 5536, "exit_code": 0 } ], "summary": { "array-append-aligned64": { "samples": 7, "processes": 1, "ns_per_operation_median": 4.077911376953125, "ns_per_operation_p25": 4.0753631591796875, "ns_per_operation_p75": 4.080772399902344, "ns_per_operation_min": 4.069000244140625, "ns_per_operation_max": 4.1116180419921875, "peak_rss_kib_median": 9760.0, "peak_rss_kib_max": 9760.0 }, "array-append-reserved": { "samples": 7, "processes": 1, "ns_per_operation_median": 0.39478111267089844, "ns_per_operation_p25": 0.3947615623474121, "ns_per_operation_p75": 0.3958740234375, "ns_per_operation_min": 0.3947420120239258, "ns_per_operation_max": 0.39748382568359375, "peak_rss_kib_median": 5536.0, "peak_rss_kib_max": 5536.0 }, "array-append-unreserved": { "samples": 7, "processes": 1, "ns_per_operation_median": 0.5276203155517578, "ns_per_operation_p25": 0.5224347114562988, "ns_per_operation_p75": 0.533759593963623, "ns_per_operation_min": 0.5172891616821289, "ns_per_operation_max": 0.5528526306152344, "peak_rss_kib_median": 9760.0, "peak_rss_kib_max": 9760.0 }, "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": 1360.0, "peak_rss_kib_max": 1360.0 }, "raw-contended-churn-4-threads": { "samples": 7, "processes": 1, "ns_per_operation_median": 24.814844131469727, "ns_per_operation_p25": 24.1637225151062, "ns_per_operation_p75": 25.219161987304688, "ns_per_operation_min": 22.75379467010498, "ns_per_operation_max": 26.029746055603027, "peak_rss_kib_median": 4080.0, "peak_rss_kib_max": 4080.0 }, "raw-small-churn": { "samples": 7, "processes": 1, "ns_per_operation_median": 24.26048183441162, "ns_per_operation_p25": 23.628751754760742, "ns_per_operation_p75": 24.28595209121704, "ns_per_operation_min": 22.43085765838623, "ns_per_operation_max": 25.75381565093994, "peak_rss_kib_median": 1760.0, "peak_rss_kib_max": 1760.0 }, "system-contended-churn-4-threads": { "samples": 7, "processes": 1, "ns_per_operation_median": 158.3305206298828, "ns_per_operation_p25": 151.57157182693481, "ns_per_operation_p75": 162.88711643218994, "ns_per_operation_min": 146.05577754974365, "ns_per_operation_max": 173.30408096313477, "peak_rss_kib_median": 2704.0, "peak_rss_kib_max": 2704.0 }, "system-large-blocks": { "samples": 7, "processes": 1, "ns_per_operation_median": 4480.46875, "ns_per_operation_p25": 4479.171875, "ns_per_operation_p75": 4483.078125, "ns_per_operation_min": 4477.875, "ns_per_operation_max": 4490.875, "peak_rss_kib_median": 5536.0, "peak_rss_kib_max": 5536.0 }, "system-remote-free": { "samples": 7, "processes": 1, "ns_per_operation_median": 10.560348510742188, "ns_per_operation_p25": 10.442733764648438, "ns_per_operation_p75": 12.140266418457031, "ns_per_operation_min": 10.431930541992188, "ns_per_operation_max": 13.58795166015625, "peak_rss_kib_median": 6096.0, "peak_rss_kib_max": 6096.0 }, "system-small-churn": { "samples": 7, "processes": 1, "ns_per_operation_median": 30.218799591064453, "ns_per_operation_p25": 29.067853927612305, "ns_per_operation_p75": 31.672656059265137, "ns_per_operation_min": 28.74728012084961, "ns_per_operation_max": 36.10547351837158, "peak_rss_kib_median": 1824.0, "peak_rss_kib_max": 1824.0 } }, "round": 6 } ] }