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Demo: native Text regression#15961

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Demo: native Text regression#15961
iamAbhi-916 wants to merge 2 commits intomicrosoft:mainfrom
iamAbhi-916:demo/native-view-regression

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@iamAbhi-916 iamAbhi-916 commented Apr 8, 2026 •
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Description

perf: simulate Text regression for demo (Sleep in ParagraphComponentView::updateProps)

Microsoft Reviewers: Open in CodeFlow

@iamAbhi-916 iamAbhi-916 requested a review from a team as a code owner April 8, 2026 14:16
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github-actions bot commented Apr 8, 2026

Performance Test Results

Branch: demo/native-view-regression
Commit: d455aab2
Time: 2026-04-08T14:43:03.426Z
Tests: 155/161 passed

❌ Regressions Detected

SectionList.native-perf-test.ts

Scenario Baseline Current Change Status
SectionList native mount 6.66ms 96.74ms +1396.1% ❌

SectionList native mount: Duration increased by 1396.1% / +90.81ms (threshold: 20% & 5ms)

FlatList.native-perf-test.ts

Scenario Baseline Current Change Status
FlatList native mount 9.11ms 102.79ms +1053.4% ❌

FlatList native mount: Duration increased by 1053.4% / +97.21ms (threshold: 20% & 5ms)

TouchableHighlight.native-perf-test.ts

Scenario Baseline Current Change Status
TouchableHighlight native mount 2.23ms 10.00ms +431.9% ❌

TouchableHighlight native mount: Duration increased by 431.9% / +9.02ms (threshold: 15% & 5ms)

TouchableOpacity.native-perf-test.ts

Scenario Baseline Current Change Status
TouchableOpacity native mount 3.19ms 10.38ms +247.6% ❌

TouchableOpacity native mount: Duration increased by 247.6% / +7.77ms (threshold: 15% & 5ms)

Button.native-perf-test.ts

Scenario Baseline Current Change Status
Button native mount 2.96ms 9.90ms +256.8% ❌

Button native mount: Duration increased by 256.8% / +6.68ms (threshold: 15% & 5ms)

Text.native-perf-test.ts

Scenario Baseline Current Change Status
Text native mount 1.76ms 11.13ms +545.6% ❌

Text native mount: Duration increased by 545.6% / +9.49ms (threshold: 15% & 5ms)

✅ Passed

155 scenario(s) across 22 suite(s) — no regressions

SectionList

Scenario Mean Median StdDev Renders vs Baseline
SectionList mount 5.70ms 5.50ms ±1.83ms 1 +10.0%
SectionList unmount 0.10ms 0.00ms ±0.32ms 0 +0.0%
SectionList rerender 13.10ms 12.50ms ±1.91ms 2 +19.0%
SectionList with-3-sections-15-items 6.30ms 6.00ms ±1.34ms 1 +9.1%
SectionList with-5-sections-50-items 6.70ms 6.50ms ±2.11ms 1 +8.3%
SectionList with-10-sections-200-items 6.50ms 6.00ms ±1.43ms 1 +9.1%
SectionList with-20-sections-200-items 6.80ms 7.00ms ±3.26ms 1 +40.0%
SectionList with-section-separator 2.10ms 2.00ms ±0.32ms 1 +0.0%
SectionList with-item-separator 3.60ms 3.00ms ±2.22ms 1 +50.0%
SectionList with-header-footer 3.00ms 3.00ms ±0.82ms 1 +50.0%
SectionList with-section-footer 2.50ms 2.50ms ±0.53ms 1 +25.0%
SectionList with-sticky-section-headers 1.90ms 2.00ms ±1.20ms 1 +0.0%
SectionList with-empty-list 0.60ms 1.00ms ±0.52ms 1 +0.0%
SectionList with-50-sections-1000-items 1.40ms 1.00ms ±0.52ms 1 -50.0%

FlatList

Scenario Mean Median StdDev Renders vs Baseline
FlatList mount 4.30ms 4.00ms ±0.95ms 1 +0.0%
FlatList unmount 0.30ms 0.00ms ±0.48ms 0 +0.0%
FlatList rerender 11.80ms 12.00ms ±1.87ms 2 +33.3%
FlatList with-10-items 6.40ms 7.00ms ±1.26ms 1 +75.0%
FlatList with-100-items 13.70ms 7.00ms ±15.83ms 1 +40.0%
FlatList with-500-items 4.60ms 5.00ms ±0.84ms 1 +25.0%
FlatList with-1000-items 5.30ms 5.00ms ±1.16ms 1 +25.0%
FlatList horizontal 4.80ms 4.00ms ±1.69ms 1 -20.0%
FlatList with-separator 2.10ms 2.00ms ±0.88ms 1 +0.0%
FlatList with-header-footer 3.40ms 3.00ms ±2.41ms 1 +50.0%
FlatList with-empty-list 0.60ms 1.00ms ±0.52ms 1 +100.0%
FlatList with-get-item-layout 1.90ms 2.00ms ±0.74ms 1 +100.0%
FlatList inverted 2.00ms 2.00ms ±0.82ms 1 +33.3%
FlatList with-num-columns 3.80ms 3.00ms ±2.15ms 1 +0.0%

TouchableOpacity

Scenario Mean Median StdDev Renders vs Baseline
TouchableOpacity mount 1.00ms 1.00ms ±0.00ms 1 +0.0%
TouchableOpacity unmount 0.10ms 0.00ms ±0.32ms 0 +0.0%
TouchableOpacity rerender 1.00ms 1.00ms ±0.67ms 2 +0.0%
TouchableOpacity custom-active-opacity 0.70ms 1.00ms ±0.48ms 1 +0.0%
TouchableOpacity disabled 0.70ms 1.00ms ±0.48ms 1 +0.0%
TouchableOpacity with-all-handlers 1.30ms 1.00ms ±1.70ms 1 +0.0%
TouchableOpacity with-hit-slop 1.00ms 1.00ms ±0.00ms 1 +0.0%
TouchableOpacity with-delay 1.00ms 1.00ms ±0.00ms 1 +0.0%
TouchableOpacity nested 1.70ms 2.00ms ±0.48ms 1 +100.0%
TouchableOpacity multiple-10 7.27ms 8.00ms ±1.79ms 1 +33.3%
TouchableOpacity multiple-50 33.27ms 34.00ms ±5.80ms 1 +17.2%
TouchableOpacity multiple-100 58.93ms 57.00ms ±21.16ms 1 +14.0%

ScrollView

Scenario Mean Median StdDev Renders vs Baseline
ScrollView mount 0.30ms 0.00ms ±0.48ms 1 +0.0%
ScrollView unmount 0.10ms 0.00ms ±0.32ms 0 +0.0%
ScrollView rerender 0.60ms 1.00ms ±0.52ms 2 +0.0%
ScrollView children-20 3.67ms 3.00ms ±1.29ms 1 -25.0%
ScrollView children-100 17.80ms 17.00ms ±3.19ms 1 +6.3%
ScrollView horizontal 3.80ms 4.00ms ±0.92ms 1 +0.0%
ScrollView sticky-headers 2.80ms 3.00ms ±1.03ms 1 +0.0%
ScrollView scroll-indicators 0.70ms 1.00ms ±0.48ms 1 +0.0%
ScrollView nested 1.70ms 1.00ms ±1.25ms 1 +0.0%
ScrollView content-container-style 0.80ms 1.00ms ±0.63ms 1 +0.0%
ScrollView children-500 22.53ms 23.00ms ±4.60ms 1 +21.1%

TouchableHighlight

Scenario Mean Median StdDev Renders vs Baseline
TouchableHighlight mount 0.50ms 0.50ms ±0.53ms 1 +0.0%
TouchableHighlight unmount 0.20ms 0.00ms ±0.42ms 0 +0.0%
TouchableHighlight rerender 0.40ms 0.00ms ±0.52ms 2 -100.0%
TouchableHighlight custom-underlay-color 0.70ms 1.00ms ±0.48ms 1 +Infinity%
TouchableHighlight custom-active-opacity 0.60ms 1.00ms ±0.52ms 1 +Infinity%
TouchableHighlight disabled 0.70ms 1.00ms ±0.48ms 1 +Infinity%
TouchableHighlight with-all-handlers 0.40ms 0.00ms ±0.52ms 1 +0.0%
TouchableHighlight with-hit-slop 0.30ms 0.00ms ±0.48ms 1 +0.0%
TouchableHighlight nested-touchables 1.30ms 1.00ms ±1.70ms 1 +0.0%
TouchableHighlight multiple-touchables-10 2.60ms 2.50ms ±0.70ms 1 -16.7%
TouchableHighlight multiple-touchables-50 14.70ms 13.50ms ±2.36ms 1 +8.0%
TouchableHighlight multiple-touchables-100 27.30ms 25.50ms ±6.36ms 1 +13.3%

Pressable

Scenario Mean Median StdDev Renders vs Baseline
Pressable mount 0.50ms 0.50ms ±0.53ms 1 +Infinity%
Pressable unmount 0.00ms 0.00ms ±0.00ms 0 +0.0%
Pressable rerender 0.50ms 0.50ms ±0.53ms 2 +0.0%
Pressable with-all-handlers 0.30ms 0.00ms ±0.48ms 1 +0.0%
Pressable with-style-function 0.40ms 0.00ms ±0.52ms 1 +0.0%
Pressable disabled 0.40ms 0.00ms ±0.52ms 1 +0.0%
Pressable with-hit-slop 0.40ms 0.00ms ±0.52ms 1 +0.0%
Pressable nested 0.60ms 1.00ms ±0.52ms 1 +0.0%
Pressable multiple-10 3.40ms 3.00ms ±0.51ms 1 +0.0%
Pressable multiple-50 17.73ms 18.00ms ±2.40ms 1 +28.6%
Pressable multiple-100 18.60ms 15.00ms ±9.85ms 1 +25.0%

Modal

Scenario Mean Median StdDev Renders vs Baseline
Modal mount 0.40ms 0.00ms ±0.52ms 1 +0.0%
Modal unmount 0.20ms 0.00ms ±0.42ms 0 +0.0%
Modal rerender 0.60ms 1.00ms ±0.52ms 2 +Infinity%
Modal slide-animation 0.30ms 0.00ms ±0.48ms 1 +0.0%
Modal fade-animation 0.40ms 0.00ms ±0.52ms 1 +0.0%
Modal transparent 0.30ms 0.00ms ±0.48ms 1 +0.0%
Modal with-callbacks 0.00ms 0.00ms ±0.00ms 1 +0.0%
Modal rich-content 1.60ms 2.00ms ±0.52ms 1 +0.0%
Modal with-accessibility 0.20ms 0.00ms ±0.42ms 1 +0.0%

Image

Scenario Mean Median StdDev Renders vs Baseline
Image mount 0.20ms 0.00ms ±0.42ms 1 +0.0%
Image unmount 0.00ms 0.00ms ±0.00ms 0 +0.0%
Image rerender 0.10ms 0.00ms ±0.32ms 2 +0.0%
Image with-resize-mode 0.20ms 0.00ms ±0.42ms 1 +0.0%
Image with-border-radius 0.10ms 0.00ms ±0.32ms 1 +0.0%
Image with-tint-color 0.20ms 0.00ms ±0.42ms 1 +0.0%
Image with-blur-radius 0.20ms 0.00ms ±0.42ms 1 +0.0%
Image with-accessibility 0.20ms 0.00ms ±0.42ms 1 +0.0%
Image multiple-10 0.73ms 1.00ms ±0.59ms 1 +0.0%
Image multiple-50 4.20ms 4.00ms ±1.08ms 1 +33.3%
Image multiple-100 9.20ms 8.00ms ±2.14ms 1 +0.0%

ActivityIndicator

Scenario Mean Median StdDev Renders vs Baseline
ActivityIndicator mount 0.00ms 0.00ms ±0.00ms 1 +0.0%
ActivityIndicator unmount 0.00ms 0.00ms ±0.00ms 0 +0.0%
ActivityIndicator rerender 0.20ms 0.00ms ±0.42ms 2 +0.0%
ActivityIndicator size-large 0.20ms 0.00ms ±0.42ms 1 +0.0%
ActivityIndicator size-small 0.20ms 0.00ms ±0.42ms 1 +0.0%
ActivityIndicator with-color 0.10ms 0.00ms ±0.32ms 1 +0.0%
ActivityIndicator not-animating 0.10ms 0.00ms ±0.32ms 1 +0.0%
ActivityIndicator with-accessibility 0.20ms 0.00ms ±0.42ms 1 +0.0%
ActivityIndicator multiple-10 1.40ms 1.00ms ±1.30ms 1 +0.0%
ActivityIndicator multiple-50 4.80ms 4.00ms ±1.08ms 1 +0.0%
ActivityIndicator multiple-100 9.53ms 9.00ms ±2.29ms 1 +28.6%

Switch

Scenario Mean Median StdDev Renders vs Baseline
Switch mount 0.20ms 0.00ms ±0.42ms 1 +0.0%
Switch unmount 0.10ms 0.00ms ±0.32ms 0 +0.0%
Switch rerender 0.30ms 0.00ms ±0.48ms 2 -100.0%
Switch value-true 0.00ms 0.00ms ±0.00ms 1 +0.0%
Switch disabled 0.50ms 0.00ms ±1.27ms 1 +0.0%
Switch custom-colors 0.20ms 0.00ms ±0.42ms 1 +0.0%
Switch on-value-change 0.20ms 0.00ms ±0.42ms 1 +0.0%
Switch with-accessibility 0.30ms 0.00ms ±0.48ms 1 +0.0%
Switch multiple-10 1.53ms 1.00ms ±0.64ms 1 -50.0%
Switch multiple-50 10.80ms 9.00ms ±3.59ms 1 +0.0%
Switch multiple-100 20.07ms 19.00ms ±3.95ms 1 +18.8%

Button

Scenario Mean Median StdDev Renders vs Baseline
Button mount 0.70ms 1.00ms ±0.48ms 1 +0.0%
Button unmount 0.10ms 0.00ms ±0.32ms 0 +0.0%
Button rerender 0.70ms 1.00ms ±0.48ms 2 +0.0%
Button disabled 0.70ms 1.00ms ±0.48ms 1 +0.0%
Button with-color 0.60ms 1.00ms ±0.52ms 1 +100.0%
Button with-accessibility 0.50ms 0.50ms ±0.53ms 1 -50.0%
Button multiple-10 7.07ms 7.00ms ±1.44ms 1 +16.7%
Button multiple-50 25.27ms 28.00ms ±9.74ms 1 +3.7%
Button multiple-100 19.87ms 18.00ms ±6.37ms 1 -5.3%

TextInput

Scenario Mean Median StdDev Renders vs Baseline
TextInput mount 0.30ms 0.00ms ±0.48ms 1 +0.0%
TextInput unmount 0.00ms 0.00ms ±0.00ms 0 +0.0%
TextInput rerender 0.10ms 0.00ms ±0.32ms 2 +0.0%
TextInput multiline 0.10ms 0.00ms ±0.32ms 1 +0.0%
TextInput with-value 0.20ms 0.00ms ±0.42ms 1 +0.0%
TextInput styled 0.20ms 0.00ms ±0.42ms 1 +0.0%
TextInput multiple-100 8.60ms 8.00ms ±1.99ms 1 +14.3%

View

Scenario Mean Median StdDev Renders vs Baseline
View mount 0.10ms 0.00ms ±0.32ms 1 +0.0%
View unmount 0.00ms 0.00ms ±0.00ms 0 +0.0%
View rerender 0.30ms 0.00ms ±0.48ms 2 +0.0%
View nested-50 4.07ms 4.00ms ±1.16ms 1 +33.3%
View nested-100 8.53ms 8.00ms ±1.77ms 1 +14.3%
View shadow 0.20ms 0.00ms ±0.42ms 1 +0.0%
View border-radius 0.20ms 0.00ms ±0.42ms 1 +0.0%
View nested-500 18.47ms 11.00ms ±13.32ms 1 +10.0%

Text

Scenario Mean Median StdDev Renders vs Baseline
Text mount 0.10ms 0.00ms ±0.32ms 1 +0.0%
Text unmount 0.10ms 0.00ms ±0.32ms 0 +0.0%
Text rerender 0.40ms 0.00ms ±0.52ms 2 +0.0%
Text long-1000 0.20ms 0.00ms ±0.42ms 1 +0.0%
Text nested 0.10ms 0.00ms ±0.32ms 1 +0.0%
Text styled 0.10ms 0.00ms ±0.32ms 1 +0.0%
Text multiple-100 9.33ms 9.00ms ±1.95ms 1 +28.6%

Pressable.native-perf-test.ts

Scenario Mean Median StdDev Renders vs Baseline
Pressable native mount 9.77ms 7.42ms ±4.96ms 1 +195.4%

ScrollView.native-perf-test.ts

Scenario Mean Median StdDev Renders vs Baseline
ScrollView native mount 3.77ms 3.59ms ±0.68ms 1 -11.3%

ActivityIndicator.native-perf-test.ts

Scenario Mean Median StdDev Renders vs Baseline
ActivityIndicator native mount 1.68ms 1.61ms ±0.23ms 1 -35.2%

TextInput.native-perf-test.ts

Scenario Mean Median StdDev Renders vs Baseline
TextInput native mount 2.40ms 2.28ms ±0.32ms 1 -44.2%

Switch.native-perf-test.ts

Scenario Mean Median StdDev Renders vs Baseline
Switch native mount 1.38ms 1.33ms ±0.16ms 1 -23.6%

Modal.native-perf-test.ts

Scenario Mean Median StdDev Renders vs Baseline
Modal native mount 1.17ms 1.09ms ±0.22ms 1 -10.5%

Image.native-perf-test.ts

Scenario Mean Median StdDev Renders vs Baseline
Image native mount 1.93ms 1.75ms ±0.56ms 1 -22.4%

View.native-perf-test.ts

Scenario Mean Median StdDev Renders vs Baseline
View native mount 1.33ms 1.18ms ±0.36ms 1 -17.5%

@iamAbhi-916 iamAbhi-916 marked this pull request as draft April 8, 2026 15:19
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