Resolve root font-relative units from root style

[ldm0]

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[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 1e5fdc5c84d8 → HEAD eff44ce17886; 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	39.38 s	37.96 s	-1.41 s (-3.59%)
Estimated CPU	31.75 s	32.79 s	+1.04 s (+3.29%)
Peak PSS	357.21 MiB	347.58 MiB	-9.63 MiB (-2.70%)
Peak RSS	359.27 MiB	349.52 MiB	-9.75 MiB (-2.71%)
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" [1.037, 2.039, 3.041, 3.542, 4.542, 5.543, 6.545, 7.547, 9.048, 10.05, 11.051, 12.051, 12.551, 13.052, 14.554, 15.556, 16.556, 17.557, 18.559, 20.062, 21.063, 22.065, 23.065, 24.065, 25.065, 26.567, 27.569, 28.57, 29.571, 30.572, 31.574, 32.075, 33.075, 34.077, 35.078, 36.079, 37.581, 38.582]
    y-axis "CPU percent" 0 --> 200
    line [55.91, 111.81, 101.71, 89.89, 170, 133.73, 129.81, 153.74, 34, 71.87, 137.83, 46.02, 2, 3.99, 101.9, 55.92, 62.05, 97.93, 39.95, 77.8, 129.75, 125.81, 110.03, 116.03, 133.95, 67.92, 65.91, 7.99, 54.02, 127.92, 103.77, 99.75, 61.94, 5.99, 25.97, 29.96, 41.95, 113.88]

Loading

xychart-beta
    title "Base memory: RSS then PSS"
    x-axis "Elapsed seconds" [0.036, 1.037, 2.039, 3.041, 3.542, 4.542, 5.543, 6.545, 7.547, 9.048, 10.05, 11.051, 12.051, 12.551, 13.052, 14.554, 15.556, 16.556, 17.557, 18.559, 20.062, 21.063, 22.065, 23.065, 24.065, 25.065, 26.567, 27.569, 28.57, 29.571, 30.572, 31.574, 32.075, 33.075, 34.077, 35.078, 36.079, 37.581, 38.582, 39.377]
    y-axis "Memory MiB" 0 --> 500
    line [23.06, 122.24, 150.08, 191.94, 192.46, 257.46, 273.11, 237.53, 257.1, 232.1, 244.44, 250.39, 222.57, 212.41, 167.2, 205.32, 190.43, 186.53, 226.63, 186.19, 206.21, 236, 257.88, 214.74, 223.23, 219.94, 210.54, 196.3, 195.15, 213.35, 341.41, 359.27, 231.45, 225.44, 206.95, 218.13, 210.5, 196.49, 242.84, 0]
    line [21.34, 120.21, 148.04, 189.91, 190.43, 255.57, 271.21, 235.48, 255.06, 230.29, 243.31, 251.42, 220.52, 210.35, 165.14, 203.26, 188.38, 183.86, 224.58, 184.14, 204.15, 234.07, 255.82, 212.68, 221.18, 216.93, 208.54, 194.24, 193.14, 211.3, 339.37, 357.21, 229.4, 223.39, 204.89, 216.07, 208.53, 194.34, 241.05, 0]

Loading

HEAD

xychart-beta
    title "HEAD CPU"
    x-axis "Elapsed seconds" [1.036, 2.037, 3.037, 4.038, 5.039, 5.539, 6.04, 6.54, 7.541, 8.543, 9.543, 10.544, 11.544, 12.544, 13.545, 15.046, 16.047, 17.048, 18.049, 19.05, 20.052, 21.053, 22.055, 23.056, 24.556, 25.557, 26.559, 27.56, 28.56, 29.561, 30.563, 31.063, 31.563, 32.564, 34.067, 35.069, 36.071, 37.072]
    y-axis "CPU percent" 0 --> 200
    line [57.92, 4, 92.03, 99.97, 175.82, 91.9, 43.93, 158.02, 125.81, 165.87, 112.02, 105.82, 108.01, 108, 71.92, 86.03, 15.98, 35.98, 77.92, 119.89, 157.78, 129.96, 131.76, 112.01, 112.05, 99.8, 69.89, 83.87, 14, 115.89, 113.83, 104.02, 113.97, 47.89, 0, 131.77, 57.93, 121.77]

Loading

xychart-beta
    title "HEAD memory: RSS then PSS"
    x-axis "Elapsed seconds" [0.036, 1.036, 2.037, 3.037, 4.038, 5.039, 5.539, 6.04, 6.54, 7.541, 8.543, 9.543, 10.544, 11.544, 12.544, 13.545, 15.046, 16.047, 17.048, 18.049, 19.05, 20.052, 21.053, 22.055, 23.056, 24.556, 25.557, 26.559, 27.56, 28.56, 29.561, 30.563, 31.063, 31.563, 32.564, 34.067, 35.069, 36.071, 37.072, 37.965]
    y-axis "Memory MiB" 0 --> 500
    line [22.72, 119.45, 132.71, 146.87, 176.27, 228.52, 231.1, 252.01, 256.13, 234.13, 252.19, 244.13, 232.79, 218.34, 200.61, 200.79, 212.16, 190.12, 184.85, 220.68, 205.54, 213, 233.42, 265.83, 212.76, 242.85, 217.59, 209.61, 196.06, 204.26, 269.26, 335.63, 349.52, 235.01, 230.77, 222.46, 220.44, 222.34, 241.31, 0]
    line [21.1, 117.55, 130.8, 144.97, 174.36, 226.51, 229.19, 249.07, 253.51, 232.15, 250.2, 241.45, 230.79, 216.36, 198.62, 198.82, 210.17, 188.13, 182.86, 218.69, 203.6, 211.01, 231.87, 263.84, 210.77, 240.87, 215.61, 207.76, 194.07, 202.27, 267.27, 333.64, 347.58, 233.02, 228.78, 220.47, 218.45, 220.35, 239.32, 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	19.93 s	19.92 s	-0.00 s (-0.02%)
Estimated CPU	0.46 s	0.47 s	+0.01 s (+2.16%)
Peak PSS	86.87 MiB	86.91 MiB	+0.04 MiB (+0.05%)
Peak RSS	89.04 MiB	89.10 MiB	+0.06 MiB (+0.07%)
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 3cbc3c2b49 → HEAD 03af9f1591; benchmark order: head-first; workflow: success.

Session resilience

Metric	Base	HEAD
Attempted / planned	200 / 200	200 / 200
Direct observable pass	200 / 200	200 / 200
Failures / recovered	0 / 0	0 / 0
Recovery failures	0	0
Lifecycle order violations	0	0
Network order violations	0	0
Wall time	270.4 s	267.2 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	252.7 MiB	267.6 MiB	+14.8 MiB
Periodic peak PSS	250.3 MiB	264.9 MiB	+14.7 MiB
RSS · first 10 avg	192.0 MiB	208.3 MiB	+16.3 MiB
RSS · last 10 avg	182.7 MiB	229.1 MiB	+46.4 MiB
RSS · last − first window	-9.2 MiB	+20.8 MiB	+30.1 MiB
RSS · warm slope / 100 nav	-15.2 MiB	+5.8 MiB	+21.0 MiB
PSS · first 10 avg	189.2 MiB	205.5 MiB	+16.3 MiB
PSS · last 10 avg	181.2 MiB	226.5 MiB	+45.3 MiB
PSS · last − first window	-8.0 MiB	+20.9 MiB	+29.0 MiB
PSS · warm slope / 100 nav	-14.8 MiB	+5.8 MiB	+20.6 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	217.4 MiB	197.9 MiB	256.9 MiB	214.6 MiB	195.1 MiB	47
51–100	222.2 MiB	207.3 MiB	260.5 MiB	219.7 MiB	204.9 MiB	43
101–150	225.3 MiB	205.0 MiB	262.0 MiB	222.8 MiB	202.3 MiB	43
151–200	228.0 MiB	218.6 MiB	267.8 MiB	225.4 MiB	216.0 MiB	42

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 3cbc3c2b495a → HEAD 03af9f15919d; benchmark order: head-first; workflow: success.

Public 48-site run · informational

Metric	Base	HEAD	Δ
Run status	success	success	—
Extracted rows / contract	179 / 240	184 / 240	+5 (+2.79%)
Contract fill	74.58%	76.67%	+2.09 pp (+2.80%)
Sites with rows	37 / 48	38 / 48	+1 (+2.70%)
Sites meeting row contract	35 / 48	36 / 48	+1 (+2.86%)
Unexpected empty sites	11	10	-1 (-9.09%)
Partial-row sites	2	2	0 (0.00%)
Site outcomes	extracted: 36; HTTP error + rows: 1; empty: 7; HTTP error + empty: 1; snapshot error + empty: 3	extracted: 36; HTTP error + rows: 2; empty: 7; HTTP error + empty: 1; snapshot error + empty: 2	—
Observed duration	46.83 s	40.72 s	-6.11 s (-13.05%)
Estimated CPU	36.35 s	32.70 s	-3.65 s (-10.04%)
Peak PSS	262.96 MiB	307.79 MiB	+44.83 MiB (+17.05%)
Peak RSS	265.24 MiB	309.96 MiB	+44.72 MiB (+16.86%)
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	27 / 40	27 / 40	0
games	37 / 40	37 / 40	0
life	25 / 40	30 / 40	+5

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, 1.544, 2.548, 3.551, 4.052, 5.052, 6.553, 8.057, 9.058, 10.562, 12.067, 13.068, 14.57, 15.572, 17.074, 18.575, 19.575, 21.076, 22.082, 23.583, 25.084, 26.085, 27.587, 28.588, 30.092, 31.6, 32.605, 34.109, 35.611, 36.612, 38.118, 39.119, 40.621, 42.123, 42.623, 43.124, 44.627, 45.63]
    y-axis "CPU percent" 0 --> 200
    line [49.87, 105.23, 111.29, 99.95, 99.88, 119.91, 127.91, 155.75, 73.9, 91.87, 87.89, 103.89, 99.92, 97.75, 9.97, 4, 52.03, 31.98, 81.78, 9.99, 89.97, 26.01, 111.77, 123.75, 107.28, 33.77, 109.87, 109.79, 35.97, 63.86, 27.92, 79.91, 97.89, 55.95, 2, 33.96, 31.97, 111.67]

Loading

xychart-beta
    title "Base memory: RSS then PSS"
    x-axis "Elapsed seconds" [0.038, 1.041, 1.544, 2.548, 3.551, 4.052, 5.052, 6.553, 8.057, 9.058, 10.562, 12.067, 13.068, 14.57, 15.572, 17.074, 18.575, 19.575, 21.076, 22.082, 23.583, 25.084, 26.085, 27.587, 28.588, 30.092, 31.6, 32.605, 34.109, 35.611, 36.612, 38.118, 39.119, 40.621, 42.123, 42.623, 43.124, 44.627, 45.63, 46.828]
    y-axis "Memory MiB" 0 --> 500
    line [20.73, 119.14, 142.31, 165.82, 176.84, 190.47, 228.53, 213.51, 226.94, 206.09, 203.63, 211.49, 184.89, 184.36, 184.67, 173.06, 174.69, 183.3, 166.09, 180.08, 178.96, 199.19, 172.43, 201.67, 245.34, 265.24, 201.07, 212.49, 222, 183.07, 185.38, 199, 241.28, 223.3, 206.5, 206.66, 197.5, 198.49, 210.59, 0]
    line [18.92, 116.98, 140.15, 163.64, 174.66, 188.3, 226.41, 211.25, 224.64, 203.74, 201.27, 208.93, 182.49, 181.95, 182.26, 170.65, 172.28, 180.89, 163.48, 177.69, 176.6, 196.81, 170.06, 199.38, 243.04, 262.96, 198.79, 209.37, 219.79, 180.85, 183.61, 196.78, 241.3, 221.12, 204.27, 204.43, 195.28, 196.27, 208.4, 0]

Loading

HEAD

xychart-beta
    title "HEAD CPU"
    x-axis "Elapsed seconds" [1.036, 2.039, 2.539, 3.04, 3.541, 4.544, 5.545, 7.047, 8.049, 9.05, 10.552, 11.552, 12.554, 13.054, 13.554, 15.055, 16.057, 17.057, 18.058, 19.56, 20.562, 21.564, 23.065, 24.066, 25.067, 26.069, 27.571, 28.573, 29.574, 31.076, 32.079, 33.079, 34.079, 35.581, 36.583, 37.584, 38.586, 40.09]
    y-axis "CPU percent" 0 --> 200
    line [25.98, 63.91, 87.84, 113.81, 103.79, 165.47, 139.79, 135.83, 157.71, 125.83, 55.94, 119.99, 39.95, 2, 6, 73.98, 67.93, 11.99, 45.89, 49.92, 111.9, 113.79, 135.83, 105.89, 101.82, 101.86, 43.94, 105.82, 11.99, 77.9, 133.61, 103.97, 70.01, 57.73, 31.95, 111.85, 55.93, 122.02]

Loading

xychart-beta
    title "HEAD memory: RSS then PSS"
    x-axis "Elapsed seconds" [0.036, 1.036, 2.039, 2.539, 3.04, 3.541, 4.544, 5.545, 7.047, 8.049, 9.05, 10.552, 11.552, 12.554, 13.054, 13.554, 15.055, 16.057, 17.057, 18.058, 19.56, 20.562, 21.564, 23.065, 24.066, 25.067, 26.069, 27.571, 28.573, 29.574, 31.076, 32.079, 33.079, 34.079, 35.581, 36.583, 37.584, 38.586, 40.09, 40.719]
    y-axis "Memory MiB" 0 --> 500
    line [21.24, 110.09, 140.28, 145.54, 173.32, 173.73, 220.7, 215, 256.44, 257.59, 249.3, 239.38, 275.39, 169.27, 169.06, 170.24, 184.87, 196.69, 180.14, 173.47, 189.95, 202.6, 239.09, 210.19, 215.7, 230.96, 221.71, 196, 196.75, 196.39, 224.34, 300.73, 309.96, 225.34, 216.29, 188.38, 210.29, 188.01, 239.77, 0]
    line [19.19, 107.67, 137.85, 143.11, 170.9, 168.87, 218.02, 212.57, 254.01, 254.81, 246.86, 236.96, 272.95, 166.81, 166.6, 167.78, 182.41, 194.23, 177.67, 171.01, 187.48, 203.74, 236.65, 207.71, 213.23, 228.49, 219.24, 193.53, 194.21, 193.78, 221.9, 298.56, 307.79, 223.1, 214.05, 186.26, 208.18, 185.9, 237.74, 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	19.92 s	20.03 s	+0.11 s (+0.56%)
Estimated CPU	0.45 s	0.48 s	+0.03 s (+6.64%)
Peak PSS	86.06 MiB	85.17 MiB	-0.90 MiB (-1.04%)
Peak RSS	88.43 MiB	87.55 MiB	-0.88 MiB (-1.00%)
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.