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"prefault_producer_buffers": true, "finish_timeout_ms": 5000, "work_wait_min_ms": 1, "finish_retry_ms": 1, "publish_count": 4294967295, "spsc_capacity": 0, "retry_yield_every": 1024, "spsc_idle_spins": 0, "spsc_idle_sleep_ns": 1000, "timer": "auto", "sample_every": 32, "max_samples": 1000000, "latency_batch_size": 1000, "timer_calibration_samples": 16384, "call_batch_size": 256, "random_seed": 42, "timeout_seconds": 180, "buffer_budget_bytes": 16777216 } }, "selected_candidate_ids": { "throughput": "fded975c9e89", "p50": "fded975c9e89", "p99": "4e25adf1fc9b", "p999": "4e25adf1fc9b" }, "ranking_status": { "throughput": "observed", "p50": "observed", "p99": "observed", "p999": "observed" }, "p50_ns": 10.024999999988001, "p99_ns": 32.35833333334, "p999_ns": 45.49166666668, "callback_to_producer_ratio": 1.003572320056, "producer_seconds": 0.1138829168, "callback_processing_seconds": 0.1142891342, "wall_seconds": 0.1321258582, "drain_seconds": 0.0009053672000000001, "failed_write_calls": 0.0, "backpressured_messages": 0.0, "producer_retry_seconds": 0.0, "cpu_cores": 1.7772787867159998, "input_preparation_seconds": 0.0192327858, "actual_spsc_capacity": [ 262144 ], "nominal_buffer_mib": [ 8.0 ], "completed_rounds": [ 48 ], "effective_warmup_messages": [ 50000 ], "prepared_input_bytes": [ 6710880 ], "latency_samples": [ 9966 ], "latency_tail_writes": [ 34000 ], "timer": [ "mach_absolute_time" ], "peak_rss_mib": 16.40625, "latency_quantum_ns": 0.0416666666667, "resolution_limited": false, "p999_sample_count_warning": true } ], "calibration": [], "search": { "scope": "best measured configurations within the declared search space and budget; not a global optimum", "settings": { "strategy": "grid", "max_candidates_per_transport": 0, "passes": 2, "screen_messages": 10000000, "final_messages": 10000000, "screen_repetitions": 5, "final_repetitions": 5, "screen_min_rounds": 0, "final_min_rounds": 0, "validation_messages": 10000000, "batch_reference": false }, "groups": [ { "payload_bytes": 16, "callback_iterations": 0, "transport": "two_buf_queue", "tested_candidates": 135, "successful_screen_candidates": 135, "search_space_product": 135, "finalists": 4 }, { "payload_bytes": 16, "callback_iterations": 0, "transport": "rigtorp", "tested_candidates": 9, "successful_screen_candidates": 9, "search_space_product": 9, "finalists": 2 }, { "payload_bytes": 16, "callback_iterations": 0, "transport": "readerwriterqueue", "tested_candidates": 9, "successful_screen_candidates": 9, "search_space_product": 9, "finalists": 2 }, { "payload_bytes": 16, "callback_iterations": 0, "transport": "atomic_queue", "tested_candidates": 9, "successful_screen_candidates": 9, "search_space_product": 9, "finalists": 1 }, { "payload_bytes": 32, "callback_iterations": 0, "transport": "two_buf_queue", "tested_candidates": 135, "successful_screen_candidates": 135, "search_space_product": 135, "finalists": 3 }, { "payload_bytes": 32, "callback_iterations": 0, "transport": "rigtorp", "tested_candidates": 9, "successful_screen_candidates": 9, "search_space_product": 9, "finalists": 3 }, { "payload_bytes": 32, "callback_iterations": 0, "transport": "readerwriterqueue", "tested_candidates": 9, "successful_screen_candidates": 9, "search_space_product": 9, "finalists": 1 }, { "payload_bytes": 32, "callback_iterations": 0, "transport": "atomic_queue", "tested_candidates": 9, "successful_screen_candidates": 9, "search_space_product": 9, "finalists": 2 } ], "source_directory": "/Users/lc/Documents/Codex/2026-10-08/twobufqueue/work/strict-8m-search/joint-20261010-151439" }, "formal_runs": 90, "validation_runs": 15, "calibration_runs": 0, "audit_notes": [ "本页仅比较16 B与32 B。TwoBufQueue完整遍历每种长度135组参数，回调循环0，所有阶段每次一千万条、预热五万条、5次平均。最终候选把两种长度随机交错复测，未剔除异常值。", "每层消息数据区固定8 MiB：block_size × pool_min = block_size × pool_max = 8 MiB；至少2块，未使用单个8 MiB块。8 MiB是消息数据区预算，队列元数据和计时前准备的输入不计入这个数据区，也不等于进程RSS。", "扫描当前块关闭、publish_count=UINT32_MAX、两层复制和独立回调线程保留。遍历和正式复测使用同一二进制、缓存与分轮条件；吞吐与各分位数分别选优。", "ReaderWriterQueue默认构造略向上取整，因此另外完整遍历9种接收策略，并下调请求条数，使全部512槽位块的数据区合计8 MiB。保留槽位导致可用消息容量约7.984 MiB；其余对照可用数据容量8 MiB。没有修改第三方实现或负载复制代码。", "原始完整参数、全部候选、失败日志、校验与对照数据均保存；本次没有失败运行。p999仅按有限样本观察，不承诺长期最低。" ] }