feat(encoding): detect unlabeled legacy HTML like Blink

[ldm0]

No description provided.

[github-actions]

Spider Bench A/B

✅ All benchmark browser service runs completed; results are informational.

Public HEAD: 184 / 240 rows; 38 / 48 sites produced rows; 10 unexpected empty sites.

✅ Deterministic fixture diagnostic is clean.

Common ancestor b1a3d2465473 → HEAD b44dac00a3ee; benchmark order: base-first; workflow: success.

Public 48-site run · informational

Metric	Base	HEAD	Δ
Run status	success	success	—
Extracted rows / contract	188 / 240	184 / 240	-4 (-2.13%)
Contract fill	78.33%	76.67%	-1.66 pp (-2.12%)
Sites with rows	39 / 48	38 / 48	-1 (-2.56%)
Sites meeting row contract	37 / 48	36 / 48	-1 (-2.70%)
Unexpected empty sites	9	10	+1 (+11.11%)
Partial-row sites	2	2	0 (0.00%)
Site outcomes	extracted: 37; HTTP error + rows: 2; empty: 7; HTTP error + empty: 1; snapshot error + empty: 1	extracted: 37; HTTP error + rows: 1; empty: 6; HTTP error + empty: 1; snapshot error + empty: 3	—
Observed duration	45.25 s	43.06 s	-2.18 s (-4.82%)
Estimated CPU	36.20 s	35.06 s	-1.14 s (-3.16%)
Peak PSS	268.95 MiB	263.72 MiB	-5.23 MiB (-1.94%)
Peak RSS	271.30 MiB	266.41 MiB	-4.89 MiB (-1.80%)
Peak threads	27	26	-1 (-3.70%)
Mismatched sites	0	0	0
Timeout with items	0	0	0

Category rows	Base	HEAD	Δ
news	35 / 40	35 / 40	0
stocks	20 / 40	20 / 40	0
tech	35 / 40	35 / 40	0
sports	26 / 40	32 / 40	+6
games	37 / 40	37 / 40	0
life	35 / 40	25 / 40	-10

Public-site content, timing, and memory are noisy. This single A/B run reports evidence only; site outcome counts explain missing rows without treating them as a deterministic regression.

CPU and memory timelines

These are bounded 40-point views of the same complete process-tree samples used by the HTML report. CPU uses 100% per occupied logical core; memory lines are RSS first and PSS second when complete PSS samples are available.

Base

xychart-beta
    title "Base CPU"
    x-axis "Elapsed seconds" [1.041, 1.542, 2.543, 3.545, 4.046, 5.048, 5.549, 6.551, 7.553, 9.055, 10.056, 11.558, 12.56, 14.062, 15.062, 16.565, 17.567, 19.179, 20.18, 21.685, 22.686, 24.188, 25.188, 26.713, 27.716, 29.233, 30.235, 31.737, 32.74, 34.242, 35.243, 36.745, 37.748, 39.254, 40.257, 41.758, 42.759, 44.26]
    y-axis "CPU percent" 0 --> 200
    line [51.95, 125.81, 107.87, 103.69, 163.7, 89.83, 163.79, 123.7, 111.6, 71.91, 91.89, 131.72, 0, 2, 8, 75.94, 95.88, 47.94, 19.98, 79.98, 59.96, 119.83, 110.01, 127.81, 109.64, 55.92, 155.79, 117.78, 15.98, 75.9, 23.97, 51.95, 90, 73.91, 65.82, 109.87, 19.99, 105.85]

Loading

xychart-beta
    title "Base memory: RSS then PSS"
    x-axis "Elapsed seconds" [0.04, 1.041, 1.542, 2.543, 3.545, 4.046, 5.048, 5.549, 6.551, 7.553, 9.055, 10.056, 11.558, 12.56, 14.062, 15.062, 16.565, 17.567, 19.179, 20.18, 21.685, 22.686, 24.188, 25.188, 26.713, 27.716, 29.233, 30.235, 31.737, 32.74, 34.242, 35.243, 36.745, 37.748, 39.254, 40.257, 41.758, 42.759, 44.26, 45.246]
    y-axis "Memory MiB" 0 --> 500
    line [20.55, 116.43, 136.44, 174.27, 197.27, 222.8, 227.39, 215.52, 205.83, 225.18, 191.14, 226.36, 226.55, 194.17, 152.42, 163.89, 187.25, 192.7, 178.59, 178.35, 206.94, 174.39, 195.75, 198.1, 248.55, 271.3, 204.72, 224.82, 231.02, 196.33, 185.68, 189.8, 188.39, 189.98, 192.13, 204.45, 199.91, 181.56, 226.51, 0]
    line [18.71, 114.25, 134.25, 172.09, 195.07, 220.89, 225.21, 213.34, 203.65, 224.25, 189.18, 224.15, 224.33, 191.95, 150.2, 161.67, 185.03, 192.27, 176.25, 176.02, 204.6, 172.05, 193.4, 195.82, 246.2, 268.95, 202.37, 222.45, 228.65, 193.93, 183.32, 187.41, 185.92, 187.56, 189.71, 201.98, 197.57, 179.13, 224.07, 0]

Loading

HEAD

xychart-beta
    title "HEAD CPU"
    x-axis "Elapsed seconds" [1.074, 2.074, 2.578, 3.583, 4.584, 5.085, 6.087, 7.09, 8.592, 9.592, 11.094, 12.11, 13.112, 14.614, 15.614, 16.615, 18.117, 19.117, 20.618, 21.619, 22.62, 24.123, 25.124, 26.626, 27.628, 28.629, 30.13, 31.131, 32.632, 33.635, 34.635, 36.137, 37.143, 37.644, 38.146, 39.649, 40.649, 42.15]
    y-axis "CPU percent" 0 --> 200
    line [37.95, 101.97, 109.05, 107.86, 133.69, 121.83, 133.7, 103.53, 139.98, 38.01, 71.89, 111.35, 99.86, 63.96, 57.95, 9.99, 93.91, 26, 108.06, 99.83, 89.8, 107.76, 112.04, 125.86, 147.56, 103.99, 29.98, 72.02, 32.02, 89.88, 53.93, 2, 53.86, 0, 55.75, 23.97, 80.09, 139.89]

Loading

xychart-beta
    title "HEAD memory: RSS then PSS"
    x-axis "Elapsed seconds" [0.074, 1.074, 2.074, 2.578, 3.583, 4.584, 5.085, 6.087, 7.09, 8.592, 9.592, 11.094, 12.11, 13.112, 14.614, 15.614, 16.615, 18.117, 19.117, 20.618, 21.619, 22.62, 24.123, 25.124, 26.626, 27.628, 28.629, 30.13, 31.131, 32.632, 33.635, 34.635, 36.137, 37.143, 37.644, 38.146, 39.649, 40.649, 42.15, 43.065]
    y-axis "Memory MiB" 0 --> 500
    line [23.48, 117.73, 166.63, 161.42, 186.42, 206.65, 230.52, 198.1, 207.55, 231.25, 207.87, 203.01, 225.29, 196.9, 201.53, 191.93, 185.03, 211.84, 184.39, 202.89, 243.83, 232.19, 250.33, 201.72, 228.36, 254.57, 210.6, 194.22, 180, 196.6, 222.66, 195.66, 181.21, 181.99, 172.65, 186.91, 181.63, 190.02, 266.41, 0]
    line [20.52, 114.68, 163.5, 158.3, 183.29, 203.55, 227.4, 194.97, 204.45, 228.13, 204.72, 199.87, 223.64, 193.76, 198.39, 188.79, 181.88, 208.7, 181.23, 199.73, 240.7, 229.11, 247.17, 198.86, 224.6, 251.27, 207.43, 191.07, 176.82, 193.44, 219.53, 192.5, 178.05, 178.83, 169.49, 183.6, 179.41, 186.77, 263.72, 0]

Loading

Deterministic fixture · diagnostic

The fixture exercises 15 routes: 8 are expected to emit rows and 7 intentionally exercise empty, loading, or timeout behavior.

Metric	Base	HEAD	Δ
Run status	success	success	—
Extracted rows / contract	40 / 40	40 / 40	0 (0.00%)
Contract fill	100.00%	100.00%	0.00 pp (0.00%)
Sites with rows	8 / 15	8 / 15	0 (0.00%)
Sites meeting row contract	15 / 15	15 / 15	0 (0.00%)
Unexpected empty sites	0	0	0
Partial-row sites	0	0	0
Site outcomes	extracted: 7; HTTP error + rows: 1; empty: 3; timeout + empty: 4	extracted: 7; HTTP error + rows: 1; empty: 3; timeout + empty: 4	—
Observed duration	20.15 s	20.03 s	-0.12 s (-0.58%)
Estimated CPU	0.55 s	0.53 s	-0.02 s (-3.80%)
Peak PSS	81.46 MiB	85.35 MiB	+3.89 MiB (+4.77%)
Peak RSS	84.12 MiB	88.69 MiB	+4.57 MiB (+5.43%)
Peak threads	19	18	-1 (-5.26%)
Mismatched sites	0	0	0
Timeout with items	0	0	0

Full HTML, JSON, CSV, logs, and page snapshots: workflow run and full spider-bench-results artifact.

Spider Bench is informational: site failures, missing benchmark reports, failed browser service runs, fixture diagnostics, timing, and performance deltas do not fail the workflow. Build, runner, and artifact infrastructure errors can still fail it.

[github-actions]

Spider Bench A/B

✅ All benchmark browser service runs completed; results are informational.

Public HEAD: 184 / 240 rows; 38 / 48 sites produced rows; 10 unexpected empty sites.

✅ Deterministic fixture diagnostic is clean.

Common ancestor b1a3d2465473 → HEAD c2fe562eb7ea; benchmark order: head-first; workflow: success.

Public 48-site run · informational

Metric	Base	HEAD	Δ
Run status	success	success	—
Extracted rows / contract	184 / 240	184 / 240	0 (0.00%)
Contract fill	76.67%	76.67%	0.00 pp (0.00%)
Sites with rows	38 / 48	38 / 48	0 (0.00%)
Sites meeting row contract	36 / 48	36 / 48	0 (0.00%)
Unexpected empty sites	10	10	0 (0.00%)
Partial-row sites	2	2	0 (0.00%)
Site outcomes	extracted: 37; HTTP error + rows: 1; empty: 6; HTTP error + empty: 1; snapshot error + empty: 3	extracted: 36; HTTP error + rows: 2; empty: 6; HTTP error + empty: 1; snapshot error + empty: 3	—
Observed duration	36.77 s	45.33 s	+8.56 s (+23.28%)
Estimated CPU	33.09 s	35.05 s	+1.96 s (+5.92%)
Peak PSS	331.11 MiB	278.30 MiB	-52.81 MiB (-15.95%)
Peak RSS	333.43 MiB	283.57 MiB	-49.86 MiB (-14.95%)
Peak threads	27	27	0 (0.00%)
Mismatched sites	0	0	0
Timeout with items	0	0	0

Category rows	Base	HEAD	Δ
news	35 / 40	35 / 40	0
stocks	20 / 40	20 / 40	0
tech	35 / 40	35 / 40	0
sports	32 / 40	32 / 40	0
games	37 / 40	37 / 40	0
life	25 / 40	25 / 40	0

Public-site content, timing, and memory are noisy. This single A/B run reports evidence only; site outcome counts explain missing rows without treating them as a deterministic regression.

CPU and memory timelines

These are bounded 40-point views of the same complete process-tree samples used by the HTML report. CPU uses 100% per occupied logical core; memory lines are RSS first and PSS second when complete PSS samples are available.

Base

xychart-beta
    title "Base CPU"
    x-axis "Elapsed seconds" [1.045, 2.046, 3.047, 4.05, 4.551, 5.051, 5.552, 6.052, 7.055, 8.056, 9.56, 10.562, 11.564, 12.565, 13.566, 14.568, 15.57, 16.571, 17.574, 18.575, 19.575, 20.576, 21.577, 22.578, 23.578, 24.578, 25.579, 26.579, 28.08, 29.081, 30.081, 31.082, 32.084, 32.584, 33.085, 34.085, 35.086, 36.088]
    y-axis "CPU percent" 0 --> 200
    line [41.95, 117.81, 101.95, 145.61, 109.85, 111.86, 115.87, 125.91, 141.45, 121.86, 97.95, 113.83, 93.83, 61.93, 85.9, 31.91, 83.74, 31.95, 93.86, 111.82, 131.99, 129.96, 67.9, 131.78, 121.98, 18.01, 83.94, 23.98, 125.84, 113.86, 112, 61.99, 53.91, 0, 73.89, 50.02, 107.88, 135.81]

Loading

xychart-beta
    title "Base memory: RSS then PSS"
    x-axis "Elapsed seconds" [0.044, 1.045, 2.046, 3.047, 4.05, 4.551, 5.051, 5.552, 6.052, 7.055, 8.056, 9.56, 10.562, 11.564, 12.565, 13.566, 14.568, 15.57, 16.571, 17.574, 18.575, 19.575, 20.576, 21.577, 22.578, 23.578, 24.578, 25.579, 26.579, 28.08, 29.081, 30.081, 31.082, 32.084, 32.584, 33.085, 34.085, 35.086, 36.088, 36.767]
    y-axis "Memory MiB" 0 --> 500
    line [20.44, 114.6, 170.48, 177.39, 203.5, 230.21, 224.76, 207.96, 211.11, 236.73, 206.87, 199.48, 224.96, 205.07, 190.94, 196.52, 183.2, 212.42, 189.52, 211.34, 246.47, 239.52, 245.61, 199.32, 232.99, 221.05, 197.91, 186.46, 192.36, 261, 333.43, 222.65, 228.61, 226.36, 226.43, 232.41, 207.08, 217.6, 239.38, 0]
    line [18.08, 111.83, 167.72, 174.41, 200.82, 227.48, 222.02, 205.21, 208.35, 233.96, 203.98, 196.81, 222, 203, 188.83, 194.36, 181.09, 210, 187.14, 208.93, 244.09, 237.12, 243.21, 196.92, 231.18, 218.64, 195.5, 183.87, 189.95, 258.66, 331.11, 220.26, 218.6, 223.96, 224.04, 230.01, 204.94, 215.16, 236.89, 0]

Loading

HEAD

xychart-beta
    title "HEAD CPU"
    x-axis "Elapsed seconds" [1.068, 1.569, 2.57, 3.57, 4.07, 4.571, 5.074, 6.582, 7.586, 9.087, 10.089, 11.592, 12.592, 14.094, 15.096, 16.598, 17.602, 19.107, 20.113, 21.616, 23.12, 24.122, 25.629, 26.631, 28.136, 29.137, 30.64, 31.64, 33.141, 34.143, 35.645, 36.646, 38.152, 39.153, 40.654, 41.658, 43.16, 44.16]
    y-axis "CPU percent" 0 --> 200
    line [35.92, 105.9, 113.91, 95.98, 90.01, 155.66, 133.19, 97.27, 95.34, 121.91, 81.96, 93.73, 29.98, 65.98, 87.96, 0, 23.86, 35.91, 5.97, 43.91, 81.77, 93.95, 109.35, 131.84, 103.86, 33.98, 123.89, 132.01, 13.99, 75.88, 6, 53.98, 63.97, 17.99, 45.9, 79.54, 65.99, 87.97]

Loading

xychart-beta
    title "HEAD memory: RSS then PSS"
    x-axis "Elapsed seconds" [0.067, 1.068, 1.569, 2.57, 3.57, 4.07, 4.571, 5.074, 6.582, 7.586, 9.087, 10.089, 11.592, 12.592, 14.094, 15.096, 16.598, 17.602, 19.107, 20.113, 21.616, 23.12, 24.122, 25.629, 26.631, 28.136, 29.137, 30.64, 31.64, 33.141, 34.143, 35.645, 36.646, 38.152, 39.153, 40.654, 41.658, 43.16, 44.16, 45.326]
    y-axis "Memory MiB" 0 --> 500
    line [22.32, 118.59, 139.79, 160.26, 175.19, 196.15, 225.82, 236.26, 243.82, 244.44, 221.59, 228.88, 220.63, 190.31, 221.12, 220.76, 183.82, 185.78, 191.16, 181.41, 178.12, 216.75, 199.04, 226.27, 237.18, 220.81, 199.75, 283.57, 225.06, 210.23, 217.78, 203.42, 196.85, 215.63, 211.49, 199.23, 205.54, 203.4, 218.32, 0]
    line [18.67, 114.6, 135.47, 156.3, 171.21, 192.17, 221.83, 232.29, 239.84, 240.45, 217.28, 224.94, 216.64, 186.31, 217.31, 217.07, 180.12, 182.09, 187.47, 177.72, 174.43, 212.74, 195.5, 222.55, 233.59, 217.23, 195.95, 278.3, 221.48, 206.64, 214.2, 199.88, 193.3, 212.06, 207.93, 195.66, 201.97, 199.88, 214.75, 0]

Loading

Deterministic fixture · diagnostic

The fixture exercises 15 routes: 8 are expected to emit rows and 7 intentionally exercise empty, loading, or timeout behavior.

Metric	Base	HEAD	Δ
Run status	success	success	—
Extracted rows / contract	40 / 40	40 / 40	0 (0.00%)
Contract fill	100.00%	100.00%	0.00 pp (0.00%)
Sites with rows	8 / 15	8 / 15	0 (0.00%)
Sites meeting row contract	15 / 15	15 / 15	0 (0.00%)
Unexpected empty sites	0	0	0
Partial-row sites	0	0	0
Site outcomes	extracted: 7; HTTP error + rows: 1; empty: 3; timeout + empty: 4	extracted: 7; HTTP error + rows: 1; empty: 3; timeout + empty: 4	—
Observed duration	20.28 s	20.15 s	-0.12 s (-0.60%)
Estimated CPU	0.55 s	0.45 s	-0.10 s (-17.75%)
Peak PSS	80.56 MiB	82.39 MiB	+1.83 MiB (+2.28%)
Peak RSS	83.12 MiB	86.44 MiB	+3.32 MiB (+4.00%)
Peak threads	18	18	0 (0.00%)
Mismatched sites	0	0	0
Timeout with items	0	0	0

Full HTML, JSON, CSV, logs, and page snapshots: workflow run and full spider-bench-results artifact.

Spider Bench is informational: site failures, missing benchmark reports, failed browser service runs, fixture diagnostics, timing, and performance deltas do not fail the workflow. Build, runner, and artifact infrastructure errors can still fail it.

[github-actions]

Sequential Navigation Soak A/B

✅ HEAD completed the 200-navigation resilience and memory observation.

One browser process, one target, and one CDP session navigate CSDN → SegmentFault → Huaban → example.com repeatedly. This run issued 200 Page.navigate commands per binary.

Common ancestor b1a3d24654 → HEAD 23b8d1d94a; benchmark order: base-first; workflow: success.

Session resilience

Metric	Base	HEAD
Attempted / planned	200 / 200	200 / 200
Direct observable pass	200 / 200	198 / 200
Failures / recovered	0 / 0	2 / 2
Recovery failures	0	0
Lifecycle order violations	0	0
Network order violations	0	0
Wall time	285.1 s	392.1 s

A public-page failure is reported separately from an unrecoverable session. The soak requires all navigation attempts, zero failed recovery, zero lifecycle/network ordering violations, and complete resource evidence.

Process-tree memory

Metric	Base	HEAD	Δ
Boundary samples	200	200	0
Boundary RSS samples	200	200	0
Boundary PSS samples	200	200	0
Periodic peak RSS	284.5 MiB	295.4 MiB	+10.9 MiB
Periodic peak PSS	283.7 MiB	292.6 MiB	+8.9 MiB
RSS · first 10 avg	214.7 MiB	228.6 MiB	+13.9 MiB
RSS · last 10 avg	219.3 MiB	230.9 MiB	+11.6 MiB
RSS · last − first window	+4.6 MiB	+2.2 MiB	-2.3 MiB
RSS · warm slope / 100 nav	+3.2 MiB	+7.4 MiB	+4.2 MiB
PSS · first 10 avg	212.8 MiB	224.6 MiB	+11.8 MiB
PSS · last 10 avg	216.7 MiB	228.6 MiB	+11.9 MiB
PSS · last − first window	+3.9 MiB	+4.0 MiB	+0.2 MiB
PSS · warm slope / 100 nav	+2.9 MiB	+8.6 MiB	+5.7 MiB
Peak file descriptors	54	53	-1
Peak threads	28	28	0

HEAD memory by 50-navigation quarter

HEAD range	Avg RSS	Final RSS	Peak RSS	Avg PSS	Final PSS	Peak FD
1–50	222.4 MiB	199.8 MiB	279.5 MiB	218.3 MiB	195.7 MiB	44
51–100	223.0 MiB	217.4 MiB	286.4 MiB	218.9 MiB	213.3 MiB	44
101–150	230.3 MiB	203.3 MiB	288.0 MiB	226.9 MiB	200.2 MiB	44
151–200	229.9 MiB	217.8 MiB	297.8 MiB	227.2 MiB	215.5 MiB	44

Raw reports and per-navigation boundary samples: workflow run and full sequential-navigation-soak-results artifact.

Public-site timing and memory are observational. Use the A/B deltas and trend shape as evidence, not as a deterministic performance threshold.

[github-actions]

Spider Bench A/B

✅ All benchmark browser service runs completed; results are informational.

Public HEAD: 184 / 240 rows; 38 / 48 sites produced rows; 10 unexpected empty sites.

✅ Deterministic fixture diagnostic is clean.

Common ancestor b1a3d2465473 → HEAD 23b8d1d94aaa; benchmark order: base-first; workflow: success.

Public 48-site run · informational

Metric	Base	HEAD	Δ
Run status	success	success	—
Extracted rows / contract	184 / 240	184 / 240	0 (0.00%)
Contract fill	76.67%	76.67%	0.00 pp (0.00%)
Sites with rows	38 / 48	38 / 48	0 (0.00%)
Sites meeting row contract	36 / 48	36 / 48	0 (0.00%)
Unexpected empty sites	10	10	0 (0.00%)
Partial-row sites	2	2	0 (0.00%)
Site outcomes	extracted: 36; HTTP error + rows: 2; empty: 6; HTTP error + empty: 1; snapshot error + empty: 3	extracted: 37; HTTP error + rows: 1; empty: 6; HTTP error + empty: 1; snapshot error + empty: 3	—
Observed duration	39.25 s	35.44 s	-3.82 s (-9.72%)
Estimated CPU	31.43 s	31.09 s	-0.34 s (-1.07%)
Peak PSS	266.53 MiB	263.42 MiB	-3.10 MiB (-1.16%)
Peak RSS	269.30 MiB	267.34 MiB	-1.96 MiB (-0.73%)
Peak threads	27	26	-1 (-3.70%)
Mismatched sites	0	0	0
Timeout with items	0	0	0

Category rows	Base	HEAD	Δ
news	35 / 40	35 / 40	0
stocks	20 / 40	20 / 40	0
tech	35 / 40	35 / 40	0
sports	32 / 40	32 / 40	0
games	37 / 40	37 / 40	0
life	25 / 40	25 / 40	0

Public-site content, timing, and memory are noisy. This single A/B run reports evidence only; site outcome counts explain missing rows without treating them as a deterministic regression.

CPU and memory timelines

These are bounded 40-point views of the same complete process-tree samples used by the HTML report. CPU uses 100% per occupied logical core; memory lines are RSS first and PSS second when complete PSS samples are available.

Base

xychart-beta
    title "Base CPU"
    x-axis "Elapsed seconds" [1.036, 2.039, 3.04, 3.541, 4.541, 5.542, 6.542, 7.543, 9.045, 10.047, 11.049, 12.051, 12.552, 13.053, 14.555, 15.555, 16.557, 17.557, 18.56, 20.061, 21.061, 22.063, 23.064, 24.066, 25.067, 25.567, 26.569, 27.569, 28.571, 29.571, 30.572, 32.074, 33.076, 34.077, 35.079, 36.081, 37.584, 38.585]
    y-axis "CPU percent" 0 --> 200
    line [13.98, 89.84, 107.89, 85.88, 146, 127.92, 90, 151.93, 43.91, 71.84, 89.79, 19.96, 2, 3.99, 101.94, 105.9, 13.99, 43.96, 61.91, 118, 107.97, 133.74, 127.89, 61.84, 139.86, 142.02, 89.8, 18.01, 77.85, 8, 19.98, 113.84, 105.77, 4, 3.99, 125.79, 117.75, 83.87]

Loading

xychart-beta
    title "Base memory: RSS then PSS"
    x-axis "Elapsed seconds" [0.036, 1.036, 2.039, 3.04, 3.541, 4.541, 5.542, 6.542, 7.543, 9.045, 10.047, 11.049, 12.051, 12.552, 13.053, 14.555, 15.555, 16.557, 17.557, 18.56, 20.061, 21.061, 22.063, 23.064, 24.066, 25.067, 25.567, 26.569, 27.569, 28.571, 29.571, 30.572, 32.074, 33.076, 34.077, 35.079, 36.081, 37.584, 38.585, 39.251]
    y-axis "Memory MiB" 0 --> 500
    line [18.28, 85.85, 136.26, 181.93, 179.11, 232.45, 210.49, 204.28, 244.36, 213.22, 197.73, 234.3, 208.13, 197.32, 153.12, 191.09, 192.41, 175.54, 173.74, 208.81, 204.03, 241.58, 238.63, 231.77, 199.31, 210.11, 269.3, 203.01, 195.2, 187.46, 189.88, 191.32, 229.59, 236.86, 215.23, 216.36, 220.12, 202.91, 213.59, 0]
    line [16.24, 83.58, 133.97, 179.09, 176.82, 230.2, 208.13, 202.73, 242.06, 211.16, 195.36, 231.93, 205.78, 195.03, 150.83, 188.4, 190.12, 173.25, 171.45, 206.52, 201.75, 239.29, 236.34, 229.48, 197.02, 207.82, 266.53, 200.72, 192.91, 185.17, 187.58, 189.03, 227.3, 234.5, 212.94, 214.07, 217.83, 200.62, 211.3, 0]

Loading

HEAD

xychart-beta
    title "HEAD CPU"
    x-axis "Elapsed seconds" [1.036, 2.037, 2.538, 3.038, 4.039, 5.04, 6.041, 7.043, 8.044, 9.046, 10.048, 11.05, 12.051, 13.052, 14.053, 15.055, 16.056, 17.056, 18.057, 18.558, 19.56, 20.562, 21.563, 22.064, 22.565, 23.566, 24.567, 25.567, 26.568, 27.57, 28.572, 29.574, 30.575, 31.576, 32.576, 33.577, 34.578, 35.079]
    y-axis "CPU percent" 0 --> 200
    line [51.98, 115.71, 125.85, 100, 161.89, 131.81, 119.92, 171.85, 87.84, 109.83, 117.75, 75.9, 67.93, 39.89, 11.99, 27.97, 63.9, 115.91, 127.86, 113.78, 125.72, 53.93, 135.79, 139.72, 145.83, 13.99, 22.01, 73.92, 6, 79.88, 129.66, 113.83, 13.99, 6, 58.01, 117.85, 85.85, 0]

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xychart-beta
    title "HEAD memory: RSS then PSS"
    x-axis "Elapsed seconds" [0.036, 1.036, 2.037, 2.538, 3.038, 4.039, 5.04, 6.041, 7.043, 8.044, 9.046, 10.048, 11.05, 12.051, 13.052, 14.053, 15.055, 16.056, 17.056, 18.057, 18.558, 19.56, 20.562, 21.563, 22.064, 22.565, 23.566, 24.567, 25.567, 26.568, 27.57, 28.572, 29.574, 30.575, 31.576, 32.576, 33.577, 34.578, 35.079, 35.436]
    y-axis "Memory MiB" 0 --> 500
    line [19.41, 107.25, 135.88, 178.71, 184, 219.29, 251.24, 214.28, 242.14, 224.33, 236.71, 222.27, 201, 192.53, 181.46, 183.69, 173.02, 214.23, 199.93, 215.21, 245.39, 221.9, 198.38, 236.25, 267.34, 218.61, 198.85, 165.14, 176.25, 176.45, 200.4, 225.6, 223.39, 210.96, 203.09, 201.46, 226.43, 210.15, 205.41, 0]
    line [16.6, 104.17, 132.83, 175.43, 180.92, 216.76, 248.14, 211.18, 239.04, 221.53, 233.58, 219.16, 197.83, 189.4, 178.34, 180.56, 169.54, 211.1, 196.8, 212.16, 242.1, 224.7, 195.24, 234.19, 263.42, 215.48, 195.72, 161.93, 173.02, 173.23, 198.38, 222.47, 220.26, 209.86, 200.17, 198.33, 223.31, 207.03, 202.29, 0]

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Deterministic fixture · diagnostic

The fixture exercises 15 routes: 8 are expected to emit rows and 7 intentionally exercise empty, loading, or timeout behavior.

Metric	Base	HEAD	Δ
Run status	success	success	—
Extracted rows / contract	40 / 40	40 / 40	0 (0.00%)
Contract fill	100.00%	100.00%	0.00 pp (0.00%)
Sites with rows	8 / 15	8 / 15	0 (0.00%)
Sites meeting row contract	15 / 15	15 / 15	0 (0.00%)
Unexpected empty sites	0	0	0
Partial-row sites	0	0	0
Site outcomes	extracted: 7; HTTP error + rows: 1; empty: 3; timeout + empty: 4	extracted: 7; HTTP error + rows: 1; empty: 2; timeout + empty: 5	—
Observed duration	20.27 s	29.91 s	+9.64 s (+47.53%)
Estimated CPU	0.53 s	1.57 s	+1.04 s (+195.50%)
Peak PSS	76.21 MiB	75.69 MiB	-0.52 MiB (-0.68%)
Peak RSS	78.55 MiB	79.25 MiB	+0.70 MiB (+0.89%)
Peak threads	19	20	+1 (+5.26%)
Mismatched sites	0	0	0
Timeout with items	0	0	0

Full HTML, JSON, CSV, logs, and page snapshots: workflow run and full spider-bench-results artifact.

Spider Bench is informational: site failures, missing benchmark reports, failed browser service runs, fixture diagnostics, timing, and performance deltas do not fail the workflow. Build, runner, and artifact infrastructure errors can still fail it.