No Full Performance profile walked the backdrop (imagePlan) path: every
large-house fixture has plan_url null. So the #739 K1 double render -- a
warm 2.5D floor switch with a backdrop cleared the ready paper, inserted
the veil, probed the card background and rendered a second time -- was
invisible to CI by time and structurally; a temporary probe found it.
large-house-isometric-backdrop-v1 is the twin of large-house-isometric-v1
with the shipped f1.svg under a URL of its own on every floor
(plan_aspect 1, room geometry unchanged). The variant is derived in the
runner as plan-snap's is, so demo/fixtures and the bundle fingerprint do
not change. A first stable frame without the backdrop image fails the
sample. After the switchCycle window and its #735 guard, before forced
GC and outside every timed window, a probe makes six warm switches and
counts performUpdate passes until updateComplete resolves true: the K1
second pass starts after the first updateComplete resolves, so a count
taken right after the first await reads one on both sides.
evaluate.mjs rejects a candidate of this profile unless every switch took
one pass, or when the probe is missing; the base is reported, not judged
(v1.78.0 and dev before #739 take two). The budget is a copy of the
historical isometric budget under the new profile id. performance.yml
gains the isometric-backdrop matrix entry with exact-SHA comparison.
Witness: a tree with #739 reverted reads perSwitch 2 in every sample and
benchmark:compare against the branch report throws on the pass count;
v1.78.0 reads 2, the branch reads 1.
Issue: #743
User-Visible: no
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018qZfe7YS4rqEMKoVeS3GKd
Since #735 switchCycleMs times the warmed twelve-switch cycle, and the
absolute ceilings of 7000 ms (flat) and 8000 ms (2.5D) sat 7.6-10.2
times above the level. performance_smoke judges only these ceilings, so
between full runs the warm floor switch that #694/#725 just sped up was
guarded only against a several-fold collapse.
Series: every Full Performance run after #735, both sides (the base is
measured by the candidate runner, so it is warm too), 7 samples each -
36821241343 (#735, base 76558bf2), 36838891001 (#740), 36838952536
(#742) and 36839009721 (#739), the last three against dev 7ff2b5ae.
flat large-house-v1 / plan-snap / interaction 666.9-812.7 ms
2.5D large-house-isometric / stage3-dense 766.5-1333.9 ms
The 2.5D maximum is the dense pair of 36838952536, whose base on the
same runner read 1249.7 ms against 849.9-982.4 ms elsewhere: runner
noise the series is meant to contain. No 3-sample performance_smoke
median is in the series yet; those profiles join Validate only on a
src/** diff.
Rule (as #692, #675 falls in the same band): one number per family, the
first multiple of 50 ms at or above 1.15 x M and no higher than 1.2 x M,
M being the family's maximum median: flat 1.15 x 812.7 = 934.6 -> 950
(+16.9 %), 2.5D 1.15 x 1333.9 = 1534.0 -> 1550 (+16.2 %). One number
per family keeps the smoke = full (#473 AC4), plan-snap/interaction
"every original ceiling" and dense = historical (#160) contracts; the
price is wider headroom for the faster profiles. The base-relative
comparison of the full workflow (0.35 / 0.2, 250 ms) is unchanged and
stays the detector for smaller growth.
The new test pins both families: one ceiling in every file of a family,
every point of the series passes the smoke budget with --absolute-only,
the ceiling follows the rule and stays inside [1.15, 1.2] x M, doubling
the level fails, and the full profiles' ratio and noise allowance are
unchanged. 7000 left in any flat file or a ceiling under 1.15 x M reds
it. The README records the series and the reasoning.
Issue: #747
User-Visible: no
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018qZfe7YS4rqEMKoVeS3GKd
Owner decision of 2026-09-30 in #694. Switching Flat <-> 2.5D is a one-off
General settings change, and since #649 the runner measures a full config
reload for the candidate against a per-device projection flip for v1.77.0,
which alone explains most of 73.8 -> 195.7 ms. The scene build stays gated by
modelReady, firstStableRender and spaceSwitch, a UI freeze by the single
long-task ceiling; the runner still reports viewToggleMs.
Issue: #720
User-Visible: no
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018qZfe7YS4rqEMKoVeS3GKd
The full workflow's 7-sample median of firstStableRenderMs for
large-house-interaction-v1 was about 2790 ms across the 1.77 line and
about 2920 ms at v1.78.0 (7d4d75bd: 2925.0; the neighbouring run of the
same SHA read 3144.8). The 3000 ms ceiling sat 2.7 % above the level and
failed on runner noise; #689's 3-sample smoke read 3002.4.
- hardMaxMs 3000 → 3400 in the full profile and its smoke twin (one
number, #473 AC4): +16 % over the 1.78 level, +8 % over the worst run.
The base-relative ratio and noise allowance are unchanged.
- README: the series and the reasoning; the test pins the number and the
series points.
Issue: #692
User-Visible: no
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018qZfe7YS4rqEMKoVeS3GKd
spaceSwitchMs изометрии — одно холодное переключение этажа со сборкой
2.5D-геометрии; он растёт с каждой стадией 2.5D, и потолок 1800 мс из #89
stage 1 стал самим уровнем. Медиана perf-smoke на hosted-раннере:
1500 мс (09-09…09-12, 12 прогонов) → 1668 (09-19…09-25, 6) → 1798 после
#649 (9, σ 42, максимум 1867,7). Попытки одного SHA расходятся на 0,4 %,
разные прогоны одного SHA — до 5,5 %: больше образцов вердикт не меняют,
рычаг — потолок.
2200 мс: +17,8 % над наблюдённым максимумом и ниже единственной настоящей
регрессии окна (2719,6 мс, #583 до решётки, 09-16); удвоение уровня
краснеет с запасом. Одно число в трёх файлах: смок = полный профиль
(#473 AC4), плотный двойник = исторический (#160). Коэффициент и допуск
полного сравнения не тронуты. Обоснование — demo/performance/README.md,
тест закрепляет число и три точки ряда.
Issue: #675
User-Visible: no
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018qZfe7YS4rqEMKoVeS3GKd
Полные бенчмарки кандидата v1.76.0 (прогон 35097102695, SHA c3d64789) против
v1.75.0 покраснели на двух скрытых изометрических профилях:
| метрика | v1.75.0 | v1.76.0 | предел |
|---|---|---|---|
| large-house-isometric resizePreview | 603 | 981.4 | 753 |
| large-house-isometric panZoom | 90.8 | 205.2 | 150.8 |
| stage3-dense stateUpdate | 77.5 | 169.1 | 152.5 |
| stage3-dense resizePreview | 582.5 | 765.6 | 732.5 |
| stage3-dense panZoom | 90.6 | 171.7 | 150.6 |
Шаг настоящий и объяснённый: #583 добавил скрытому 2.5D-виду геометрии, а
поиск свободного места для подписей даже после ускорения решёткой стоит вдвое
дороже, чем до #583. Абсолютные потолки не тронуты и держатся с запасом
(panZoom 205 при 600, resize 981 при 2200); все семь пользовательских профилей
зелёные — регрессия целиком внутри вида за `hp_alpha`.
Решение владельца 2026-09-16: принять. Рычаг — допуск в миллисекундах, а не
коэффициент: он покрывает разовый сдвиг уровня и продолжает ловить рост от
нового уровня, тогда как поднятый коэффициент разрешил бы удвоение навсегда.
Значения одинаковы у обоих профилей — контракт #160 требует, чтобы плотный
двойник Stage 3 делил с историческим профилем каждый общий потолок, и тест
`performance-workflow` это стережёт.
Допуски временные. #585 переписывает поиск на перебор границ препятствий
вместо скана диска 48 px; когда он приедет, значения возвращаются к 150/60/75.
Тест `performance-budget` фиксирует и числа, и то, что наблюдённый шаг проходит,
а следующий такой же — уже нет.
Честно о границе метода: сравнение идёт с ПРЕДЫДУЩЕЙ вершиной main, а она уже
несёт эту же линейку, поэтому следующий прогон был бы зелёным и без правки
бюджетов. Правка сделана не ради зелёного прогона, а чтобы принятый уровень был
записан явно и проверялся тестом. Отдельно завожу, что базой стабильного
кандидата должен быть предыдущий стабильный тег, а не вершина main.
npm test 2721/2720/0 fail.
Issue: #585
User-Visible: no
Release: v1.76.0
The #160 contract test keeps the dense profile's longTasks block equal to
the historical isometric one, and both profiles boot through the same lazy
iso-scene-render chunk; the accepted split applies to both. Validate
34356856702 caught the divergence.
Issue: #507
User-Visible: no
Release: v1.73.0
Full Performance of the v1.73.0 stable candidate against the v1.72.0 product
(run 34354409872) was red on one check of the isometric profile:
longTask.countP95 16 → 20 against max(16×1.2, 16+3) = 19.2, with every
timing, longTask.totalP95Ms and longTask.maxSingleMs green. The trace behind
#506 shows why: since v1.73.0-beta.1 the isometric renderer is the lazy
iso-scene-render chunk (#160 Stage 3), so the single v1.72.0 boot task is
split in two around that import — the same work, +2 tasks.
Owner decision 2026-09-09: accept the split. countNoiseAllowance 3 → 5 for
large-house-isometric-v1 only; the ratio, the hard ceiling, total and
maximum single task keep gating real growth. The downloaded CI artefact
re-evaluated with this budget passes (limit 21, actual 20, no failures).
Documented in demo/performance/README.md; the budget test pins the
allowance and the untouched profiles.
Issue: #507
User-Visible: no
Release: v1.73.0
Классификация changes вынесена в scripts/classify-changes.mjs (выходы
perf_iso/perf_interaction, fallback --all). performance_smoke добавляет
large-house-isometric-v1 при правке src/iso-* и large-house-interaction-v1
при правке живого пути, по 3 образца против hardMaxMs полных профилей
(budgets-*-smoke.json). Набор профилей входит в ключ reuse. PROCESS.md §8.
Issue: #473
User-Visible: no
