耗时 2.824397170 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-0010-a0",
"original_run_id": "0010-a0",
"spec": {
"rows": 10000000,
"job": "group_low",
"engine": "spark",
"mode": "compute",
"repeat": 0,
"cores": 1,
"heap": "96g",
"memory": "128g",
"kind": "single_core_supplement",
"image_id": "sha256:215b09f971f3ac8d72022ea6e3157d80d88835ceb62899aecd829be0705e12b1"
},
"duration": 2.82439717,
"window_monotonic": [
1656024.301368036,
1656027.125765206
],
"window_utc": [
1793027199.6448648,
1793027202.469262
],
"quality": {
"sample_counts": {
"cpu_cores": 563,
"memory_used_gib": 564,
"read_mib_s": 563,
"write_mib_s": 563
},
"rate_span_fraction": 0.9949028444975275,
"median_interval_seconds": 0.004999899072572589,
"max_interval_seconds": 0.005075051565654576,
"collector_compute_one_core_fraction": 0.053808639441744,
"valid": true,
"minimum_rate_samples": 4,
"minimum_rate_span_fraction": 0.45,
"duration_seconds": 2.824397169984877,
"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_low",
"engine": "spark",
"mode": "compute",
"repeat": 0,
"cores": 1,
"heap": "96g",
"memory": "128g",
"kind": "single_core_supplement",
"image_id": "sha256:215b09f971f3ac8d72022ea6e3157d80d88835ceb62899aecd829be0705e12b1"
},
"selected_repeat_ordinal": 2,
"reference_campaign": "20261025T130534Z-full",
"reference_run": "0252-a0",
"reference_sha256": "680986771e8bd530a7e5a0a99a330edc6308f5dc3fae581b1400f3bbd5d02be9",
"reference_purpose": "Output correctness only; reference uses 24 cores and is not a single-core timing observation."
},
"phases": [
[
0,
2.82439717,
"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."
}