耗时 2.035998573 秒与四项资源来自同一次新运行。补齐原来未测的单核任务；原正式 304 次结果保持冻结。
5 ms 目标采样，整机指标包含后台服务；CPU 仍受 Linux 计账粒度限制，零 I/O 为有效观测。沿用原 24 核开销门槛，不代表新的单核开销估计。
绘图样本 CSV · 原始快照 · 采样推导 · 窗口与质量 · 验收记录 · 运行结果 · 阶段事件
{
"campaign": "20261026-single-core-completion-supplement",
"run_id": "20261026-single-core-completion-supplement-0015-a0",
"original_run_id": "0015-a0",
"spec": {
"rows": 10000000,
"job": "group_multi",
"engine": "pandas",
"mode": "compute",
"repeat": 2,
"cores": 1,
"heap": "96g",
"memory": "128g",
"kind": "single_core_supplement",
"image_id": "sha256:215b09f971f3ac8d72022ea6e3157d80d88835ceb62899aecd829be0705e12b1"
},
"duration": 2.035998573,
"window_monotonic": [
1656508.772278991,
1656510.808277564
],
"window_utc": [
1793027684.1157763,
1793027686.151774
],
"quality": {
"sample_counts": {
"cpu_cores": 406,
"memory_used_gib": 407,
"read_mib_s": 406,
"write_mib_s": 406
},
"rate_span_fraction": 0.9945983799434621,
"median_interval_seconds": 0.004999790864530951,
"max_interval_seconds": 0.0050811226246878505,
"collector_compute_one_core_fraction": 0.0528737019659871,
"valid": true,
"minimum_rate_samples": 4,
"minimum_rate_span_fraction": 0.45,
"duration_seconds": 2.035998572828248,
"cpu_resolution_note": "Sampling faster does not remove Linux CPU tick quantization; tiny-window peaks are not precise CPU demand."
},
"reference": {
"spec": {
"rows": 10000000,
"job": "group_multi",
"engine": "pandas",
"mode": "compute",
"repeat": 2,
"cores": 1,
"heap": "96g",
"memory": "128g",
"kind": "single_core_supplement",
"image_id": "sha256:215b09f971f3ac8d72022ea6e3157d80d88835ceb62899aecd829be0705e12b1"
},
"selected_repeat_ordinal": 2,
"reference_campaign": "20261025T130534Z-full",
"reference_run": "0262-a0",
"reference_sha256": "44614bcf286c63bef40b829ad6d29b909d87ea9f6df772cb5cee52253da84e1e",
"reference_purpose": "Output correctness only; reference uses 24 cores and is not a single-core timing observation."
},
"phases": [
[
0,
2.035998573,
"compute"
]
],
"gap_policy": "Break on rejected snapshots/intervals and gaps over 20 ms; no interpolation or smoothing.",
"collector_note": "Reuse the verified 5 ms collector and previous overhead gate; CPU 47 is physically separate from worker CPU 0. Gate was obtained on 24-core sum and is not a new single-core overhead estimate."
}