From cbe72db1352713bec1d8fb981933e22ee6ebd45f Mon Sep 17 00:00:00 2001
From: LongCatIsLooong <31859944+LongCatIsLooong@users.noreply.github.com>
Date: Tue, 12 Jan 2021 15:44:01 -0800
Subject: [PATCH]  macrobenchmark: TextField with complex paragraph (#73374)

---
 dev/benchmarks/macrobenchmarks/README.md      |  1 +
 .../macrobenchmarks/lib/common.dart           |  1 +
 dev/benchmarks/macrobenchmarks/lib/main.dart  |  9 +++
 .../lib/src/fullscreenTextField.dart          | 63 +++++++++++++++++++
 .../test/fullscreen_textfield_perf_e2e.dart   | 26 ++++++++
 .../fullscreen_textfield_perf_test.dart       | 20 ++++++
 .../bin/tasks/fullscreen_textfield_perf.dart  | 12 ++++
 ...ullscreen_textfield_perf__e2e_summary.dart | 14 +++++
 ...reen_textfield_perf__timeline_summary.dart | 12 ++++
 dev/devicelab/lib/tasks/perf_tests.dart       | 16 +++++
 dev/devicelab/manifest.yaml                   |  6 ++
 11 files changed, 180 insertions(+)
 create mode 100644 dev/benchmarks/macrobenchmarks/lib/src/fullscreenTextField.dart
 create mode 100644 dev/benchmarks/macrobenchmarks/test/fullscreen_textfield_perf_e2e.dart
 create mode 100644 dev/benchmarks/macrobenchmarks/test_driver/fullscreen_textfield_perf_test.dart
 create mode 100644 dev/devicelab/bin/tasks/fullscreen_textfield_perf.dart
 create mode 100644 dev/devicelab/bin/tasks/fullscreen_textfield_perf__e2e_summary.dart
 create mode 100644 dev/devicelab/bin/tasks/fullscreen_textfield_perf__timeline_summary.dart

diff --git a/dev/benchmarks/macrobenchmarks/README.md b/dev/benchmarks/macrobenchmarks/README.md
index 5b4c98f5b3d..6b3558b9624 100644
--- a/dev/benchmarks/macrobenchmarks/README.md
+++ b/dev/benchmarks/macrobenchmarks/README.md
@@ -55,6 +55,7 @@ The key `[test_name]` can be:
 - `post_backdrop_filter_perf`
 - `simple_animation_perf`
 - `textfield_perf`
+- `fullscreen_textfield_perf`
 
 ### E2E benchmarks
 
diff --git a/dev/benchmarks/macrobenchmarks/lib/common.dart b/dev/benchmarks/macrobenchmarks/lib/common.dart
index bae09170853..1df42bb3b1a 100644
--- a/dev/benchmarks/macrobenchmarks/lib/common.dart
+++ b/dev/benchmarks/macrobenchmarks/lib/common.dart
@@ -11,6 +11,7 @@ const String kPictureCacheRouteName = '/picture_cache';
 const String kLargeImageChangerRouteName = '/large_image_changer';
 const String kLargeImagesRouteName = '/large_images';
 const String kTextRouteName = '/text';
+const String kFullscreenTextRouteName = '/fullscreen_text';
 const String kAnimatedPlaceholderRouteName = '/animated_placeholder';
 const String kColorFilterAndFadeRouteName = '/color_filter_and_fade';
 const String kFadingChildAnimationRouteName = '/fading_child_animation';
diff --git a/dev/benchmarks/macrobenchmarks/lib/main.dart b/dev/benchmarks/macrobenchmarks/lib/main.dart
index dbae73ae341..16d90238081 100644
--- a/dev/benchmarks/macrobenchmarks/lib/main.dart
+++ b/dev/benchmarks/macrobenchmarks/lib/main.dart
@@ -12,6 +12,7 @@ import 'src/color_filter_and_fade.dart';
 import 'src/cubic_bezier.dart';
 import 'src/cull_opacity.dart';
 import 'src/filtered_child_animation.dart';
+import 'src/fullscreenTextField.dart';
 import 'src/heavy_grid_view.dart';
 import 'src/large_image_changer.dart';
 import 'src/large_images.dart';
@@ -45,6 +46,7 @@ class MacrobenchmarksApp extends StatelessWidget {
         kLargeImageChangerRouteName: (BuildContext context) => LargeImageChangerPage(),
         kLargeImagesRouteName: (BuildContext context) => LargeImagesPage(),
         kTextRouteName: (BuildContext context) => TextPage(),
+        kFullscreenTextRouteName: (BuildContext context) => TextFieldPage(),
         kAnimatedPlaceholderRouteName: (BuildContext context) => AnimatedPlaceholderPage(),
         kColorFilterAndFadeRouteName: (BuildContext context) => ColorFilterAndFadePage(),
         kFadingChildAnimationRouteName: (BuildContext context) => const FilteredChildAnimationPage(FilterType.opacity),
@@ -123,6 +125,13 @@ class HomePage extends StatelessWidget {
               Navigator.pushNamed(context, kTextRouteName);
             },
           ),
+          ElevatedButton(
+            key: const Key(kFullscreenTextRouteName),
+            child: const Text('Fullscreen Text'),
+            onPressed: () {
+              Navigator.pushNamed(context, kFullscreenTextRouteName);
+            },
+          ),
           ElevatedButton(
             key: const Key(kAnimatedPlaceholderRouteName),
             child: const Text('Animated Placeholder'),
diff --git a/dev/benchmarks/macrobenchmarks/lib/src/fullscreenTextField.dart b/dev/benchmarks/macrobenchmarks/lib/src/fullscreenTextField.dart
new file mode 100644
index 00000000000..ba4ba557b4d
--- /dev/null
+++ b/dev/benchmarks/macrobenchmarks/lib/src/fullscreenTextField.dart
@@ -0,0 +1,63 @@
+// Copyright 2014 The Flutter Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+import 'package:flutter/material.dart';
+
+const String textLotsOfText = 'Lorem ipsum dolor sit amet, consectetur '
+  'adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna '
+  'aliqua. Odio facilisis mauris sit amet massa. Tellus pellentesque eu '
+  'tincidunt tortor aliquam nulla facilisi cras fermentum. Sit amet risus nullam '
+  'eget felis eget nunc. Placerat in egestas erat imperdiet sed. Vestibulum '
+  'mattis ullamcorper velit sed. At auctor urna nunc id cursus metus aliquam. In '
+  'nibh mauris cursus mattis. Quis blandit turpis cursus in hac habitasse platea '
+  'dictumst. Orci a scelerisque purus semper eget duis at tellus. At tempor '
+  'commodo ullamcorper a lacus. At auctor urna nunc id cursus metus aliquam '
+  'eleifend. Sagittis aliquam malesuada bibendum arcu vitae elementum. Massa sed '
+  'elementum tempus egestas sed sed risus. Amet consectetur adipiscing elit ut '
+  'aliquam purus sit amet luctus. Elementum nisi quis eleifend quam adipiscing '
+  'vitae. Aliquam sem fringilla ut morbi tincidunt augue.'
+  '👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦'
+  '👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦'
+  '👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦'
+  '👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦'
+  '👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦'
+  '👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦'
+  '👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦'
+  '👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦'
+  '👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦'
+  '👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦'
+  '👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦'
+  '👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦'
+  '👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦'
+  '👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦'
+  '👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦'
+  '👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦👨‍👩‍👦'
+  '😀 😃 😄 😁 😆 😅 😂 🤣 🥲 ☺️ 😊 😇 🙂 🙃 😉 😌 😍 🥰 😘 😗 😙'
+  '😚 😋 😛 😝 😜 🤪 🤨 🧐 🤓 😎 🥸 🤩 🥳 😏 😒 😞 😔 😟 😕 🙁 ☹'
+  '️ 😣 😖 😫 😩 🥺 😢 😭 😤 😠 😡 🤬 🤯 😳 🥵 🥶 😱 😨 😰 😥 😓 '
+  '🤗 🤔 🤭 🤫 🤥 😶 😐 😑 😬 🙄 😯 😦 😧 😮 😲 🥱 😴 🤤 😪 😵 '
+  '🤐 🥴 🤢 🤮 🤧 😷 🤒 🤕 🤑 🤠 😈 👿 👹 👺 🤡 💩 👻 💀 ☠️ 👽 '
+  '👾 🤖 🎃 😺 😸 😹 😻 😼 😽 🙀 😿 😾'
+  '️ 😣 😖 😫 😩 🥺 😢 😭 😤 😠 😡 🤬 🤯 😳 🥵 🥶 😱 😨 😰 😥 😓 '
+  '🤗 🤔 🤭 🤫 🤥 😶 😐 😑 😬 🙄 😯 😦 😧 😮 😲 🥱 😴 🤤 😪 😵 '
+  '🤐 🥴 🤢 🤮 🤧 😷 🤒 🤕 🤑 🤠 😈 👿 👹 👺 🤡 💩 👻 💀 ☠️ 👽 '
+  '👾 🤖 🎃 😺 😸 😹 😻 😼 😽 🙀 😿 😾'
+  '👋 🤚 🖐 ✋ 🖖 👌 🤌 🤏 ✌️ 🤞 🤟 🤘 🤙 👈 👉 👆 🖕 👇 ☝️ 👍 👎'
+  ' ✊ 👊 🤛 🤜 👏 🙌 👐 🤲 🤝 🙏 ✍️ 💅 🤳 💪 🦾 🦵 🦿 🦶 👣 👂 '
+  '🦻 👃 🫀 🫁 🧠 🦷 🦴 👀 👁 👅 👄 💋 🩸';
+
+class TextFieldPage extends StatelessWidget {
+  @override
+  Widget build(BuildContext context) {
+    return Material(
+      child: Container(
+        child: TextField(
+          maxLines: null,
+          controller: TextEditingController(text: textLotsOfText),
+          key: const Key('fullscreen-textfield'),
+        ),
+      ),
+    );
+  }
+}
diff --git a/dev/benchmarks/macrobenchmarks/test/fullscreen_textfield_perf_e2e.dart b/dev/benchmarks/macrobenchmarks/test/fullscreen_textfield_perf_e2e.dart
new file mode 100644
index 00000000000..7b33bcd0ca5
--- /dev/null
+++ b/dev/benchmarks/macrobenchmarks/test/fullscreen_textfield_perf_e2e.dart
@@ -0,0 +1,26 @@
+// Copyright 2014 The Flutter Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+import 'package:flutter/foundation.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:macrobenchmarks/common.dart';
+
+import 'util.dart';
+
+void main() {
+  macroPerfTestE2E(
+    'fullscreen_textfield_perf',
+    kFullscreenTextRouteName,
+    // The driver version doesn't have this delay because the delay caused
+    // by the communication between the host and the test device is long enough
+    // for the driver test, but there isn't such delay in this host independent
+    // test.
+    pageDelay: const Duration(milliseconds: 50),
+    body: (WidgetController controller) async {
+      final Finder textfield = find.byKey(const ValueKey<String>('fullscreen-textfield'));
+      controller.tap(textfield);
+      await Future<void>.delayed(const Duration(milliseconds: 5000));
+    },
+  );
+}
diff --git a/dev/benchmarks/macrobenchmarks/test_driver/fullscreen_textfield_perf_test.dart b/dev/benchmarks/macrobenchmarks/test_driver/fullscreen_textfield_perf_test.dart
new file mode 100644
index 00000000000..5cf9c4dfe88
--- /dev/null
+++ b/dev/benchmarks/macrobenchmarks/test_driver/fullscreen_textfield_perf_test.dart
@@ -0,0 +1,20 @@
+// Copyright 2014 The Flutter Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+import 'package:flutter_driver/flutter_driver.dart';
+import 'package:macrobenchmarks/common.dart';
+
+import 'util.dart';
+
+void main() {
+  macroPerfTest(
+    'fullscreen_textfield_perf',
+    kFullscreenTextRouteName,
+    driverOps: (FlutterDriver driver) async {
+      final SerializableFinder textfield = find.byValueKey('fullscreen-textfield');
+      driver.tap(textfield);
+      await Future<void>.delayed(const Duration(milliseconds: 5000));
+    },
+  );
+}
diff --git a/dev/devicelab/bin/tasks/fullscreen_textfield_perf.dart b/dev/devicelab/bin/tasks/fullscreen_textfield_perf.dart
new file mode 100644
index 00000000000..a05f2a201ad
--- /dev/null
+++ b/dev/devicelab/bin/tasks/fullscreen_textfield_perf.dart
@@ -0,0 +1,12 @@
+// Copyright 2014 The Flutter Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+import 'package:flutter_devicelab/tasks/perf_tests.dart';
+import 'package:flutter_devicelab/framework/adb.dart';
+import 'package:flutter_devicelab/framework/framework.dart';
+
+Future<void> main() async {
+  deviceOperatingSystem = DeviceOperatingSystem.android;
+  await task(createFullscreenTextfieldPerfTest());
+}
diff --git a/dev/devicelab/bin/tasks/fullscreen_textfield_perf__e2e_summary.dart b/dev/devicelab/bin/tasks/fullscreen_textfield_perf__e2e_summary.dart
new file mode 100644
index 00000000000..08a03e1574b
--- /dev/null
+++ b/dev/devicelab/bin/tasks/fullscreen_textfield_perf__e2e_summary.dart
@@ -0,0 +1,14 @@
+// Copyright 2014 The Flutter Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+import 'dart:async';
+
+import 'package:flutter_devicelab/tasks/perf_tests.dart';
+import 'package:flutter_devicelab/framework/adb.dart';
+import 'package:flutter_devicelab/framework/framework.dart';
+
+Future<void> main() async {
+  deviceOperatingSystem = DeviceOperatingSystem.android;
+  await task(createFullscreenTextfieldPerfE2ETest());
+}
diff --git a/dev/devicelab/bin/tasks/fullscreen_textfield_perf__timeline_summary.dart b/dev/devicelab/bin/tasks/fullscreen_textfield_perf__timeline_summary.dart
new file mode 100644
index 00000000000..a05f2a201ad
--- /dev/null
+++ b/dev/devicelab/bin/tasks/fullscreen_textfield_perf__timeline_summary.dart
@@ -0,0 +1,12 @@
+// Copyright 2014 The Flutter Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+import 'package:flutter_devicelab/tasks/perf_tests.dart';
+import 'package:flutter_devicelab/framework/adb.dart';
+import 'package:flutter_devicelab/framework/framework.dart';
+
+Future<void> main() async {
+  deviceOperatingSystem = DeviceOperatingSystem.android;
+  await task(createFullscreenTextfieldPerfTest());
+}
diff --git a/dev/devicelab/lib/tasks/perf_tests.dart b/dev/devicelab/lib/tasks/perf_tests.dart
index 5467766afb1..cb9c0e15d08 100644
--- a/dev/devicelab/lib/tasks/perf_tests.dart
+++ b/dev/devicelab/lib/tasks/perf_tests.dart
@@ -281,6 +281,22 @@ TaskFunction createTextfieldPerfE2ETest() {
   ).run;
 }
 
+TaskFunction createFullscreenTextfieldPerfTest() {
+  return PerfTest(
+    '${flutterDirectory.path}/dev/benchmarks/macrobenchmarks',
+    'test_driver/run_app.dart',
+    'fullscreen_textfield_perf',
+    testDriver: 'test_driver/fullscreen_textfield_perf_test.dart',
+  ).run;
+}
+
+TaskFunction createFullscreenTextfieldPerfE2ETest() {
+  return PerfTest.e2e(
+    '${flutterDirectory.path}/dev/benchmarks/macrobenchmarks',
+    'test/fullscreen_textfield_perf_e2e.dart',
+  ).run;
+}
+
 TaskFunction createColorFilterAndFadePerfTest() {
   return PerfTest(
     '${flutterDirectory.path}/dev/benchmarks/macrobenchmarks',
diff --git a/dev/devicelab/manifest.yaml b/dev/devicelab/manifest.yaml
index 4cf86ee0e0f..f67899d6cf4 100644
--- a/dev/devicelab/manifest.yaml
+++ b/dev/devicelab/manifest.yaml
@@ -157,6 +157,12 @@ tasks:
     stage: devicelab
     required_agent_capabilities: ["mac/android"]
 
+  fullscreen_textfield_perf__timeline_summary:
+    description: >
+      Measures the runtime performance of large textfields with complex paragraph on Android.
+    stage: devicelab
+    required_agent_capabilities: ["mac/android"]
+
   color_filter_and_fade_perf__timeline_summary:
     description: >
       Measures the runtime performance of color filter with fade on Android.