improve performance of keyed children

[JoviDeCroock]

fixes #2619
fixes #2783

[github-actions]

📊 Tachometer Benchmark Results

Summary

duration

• 02_replace1k: slower ❌ 33% - 37% (57.51ms - 63.42ms)
  ^{preact-local vs preact-master}
• 03_update10th1k_x16: unsure 🔍 -5% - +2% (-1.66ms - +0.76ms)
  ^{preact-local vs preact-master}
• 07_create10k: unsure 🔍 -0% - +0% (-2.90ms - +5.19ms)
  ^{preact-local vs preact-master}
• filter_list: slower ❌ 15% - 18% (4.07ms - 5.03ms)
  ^{preact-local vs preact-master}
• hydrate1k: unsure 🔍 -4% - +8% (-7.56ms - +17.51ms)
  ^{preact-local vs preact-master}
• many_updates: unsure 🔍 -3% - +5% (-1.28ms - +1.80ms)
  ^{preact-local vs preact-master}
• text_update: unsure 🔍 -1% - +1% (-0.04ms - +0.03ms)
  ^{preact-local vs preact-master}

usedJSHeapSize

• 02_replace1k: slower ❌ 0% - 1% (0.01ms - 0.02ms)
  ^{preact-local vs preact-master}
• 03_update10th1k_x16: unsure 🔍 -0% - +0% (-0.01ms - +0.00ms)
  ^{preact-local vs preact-master}
• 07_create10k: unsure 🔍 -0% - +0% (-0.00ms - +0.00ms)
  ^{preact-local vs preact-master}
• filter_list: unsure 🔍 +0% - +0% (+0.01ms - +0.01ms)
  ^{preact-local vs preact-master}
• hydrate1k: unsure 🔍 -1% - +1% (-0.04ms - +0.05ms)
  ^{preact-local vs preact-master}
• many_updates: unsure 🔍 -0% - +0% (-0.00ms - +0.00ms)
  ^{preact-local vs preact-master}
• text_update: unsure 🔍 -0% - -0% (-0.00ms - -0.00ms)
  ^{preact-local vs preact-master}

Results

02_replace1k

• Browser: chrome-headless 96.0.4664.45
• Sample size: 70
• Built by: Benchmarks #564

• Commit: aeed359

duration

Version	Avg time	vs preact-master	vs preact-local
preact-master	168.64ms - 172.52ms	-	faster ✔ 25% - 27% 57.51ms - 63.42ms
preact-local	228.82ms - 233.27ms	slower ❌ 33% - 37% 57.51ms - 63.42ms	-

usedJSHeapSize

Version	Avg time	vs preact-master	vs preact-local
preact-master	3.47ms - 3.48ms	-	faster ✔ 0% - 1% 0.01ms - 0.02ms
preact-local	3.49ms - 3.50ms	slower ❌ 0% - 1% 0.01ms - 0.02ms	-

run-warmup-0

Version	Avg time	vs preact-master	vs preact-local
preact-master	58.33ms - 60.89ms	-	unsure 🔍 -2% - +3% -1.35ms - +1.72ms
preact-local	58.58ms - 60.26ms	unsure 🔍 -3% - +2% -1.72ms - +1.35ms	-

run-warmup-1

Version	Avg time	vs preact-master	vs preact-local
preact-master	87.21ms - 89.81ms	-	faster ✔ 35% - 38% 49.09ms - 53.57ms
preact-local	138.01ms - 141.66ms	slower ❌ 55% - 61% 49.09ms - 53.57ms	-

run-warmup-2

Version	Avg time	vs preact-master	vs preact-local
preact-master	78.31ms - 85.80ms	-	faster ✔ 38% - 44% 51.02ms - 61.16ms
preact-local	134.73ms - 141.56ms	slower ❌ 60% - 77% 51.02ms - 61.16ms	-

run-warmup-3

Version	Avg time	vs preact-master	vs preact-local
preact-master	65.90ms - 73.28ms	-	faster ✔ 43% - 49% 54.10ms - 62.50ms
preact-local	125.89ms - 129.89ms	slower ❌ 74% - 94% 54.10ms - 62.50ms	-

run-warmup-4

Version	Avg time	vs preact-master	vs preact-local
preact-master	88.19ms - 92.06ms	-	faster ✔ 34% - 38% 47.32ms - 55.43ms
preact-local	137.94ms - 145.06ms	slower ❌ 52% - 62% 47.32ms - 55.43ms	-

run-final

Version	Avg time	vs preact-master	vs preact-local
preact-master	62.80ms - 65.18ms	-	faster ✔ 48% - 50% 59.53ms - 63.94ms
preact-local	123.86ms - 127.58ms	slower ❌ 92% - 101% 59.53ms - 63.94ms	-

03_update10th1k_x16

• Browser: chrome-headless 96.0.4664.45
• Sample size: 120
• Built by: Benchmarks #564

• Commit: aeed359

duration

Version	Avg time	vs preact-master	vs preact-local
preact-master	33.99ms - 35.67ms	-	unsure 🔍 -2% - +5% -0.76ms - +1.66ms
preact-local	33.51ms - 35.26ms	unsure 🔍 -5% - +2% -1.66ms - +0.76ms	-

usedJSHeapSize

Version	Avg time	vs preact-master	vs preact-local
preact-master	3.40ms - 3.40ms	-	unsure 🔍 -0% - +0% -0.00ms - +0.01ms
preact-local	3.40ms - 3.40ms	unsure 🔍 -0% - +0% -0.01ms - +0.00ms	-

07_create10k

• Browser: chrome-headless 96.0.4664.45
• Sample size: 50
• Built by: Benchmarks #564

• Commit: aeed359

duration

Version	Avg time	vs preact-master	vs preact-local
preact-master	1271.34ms - 1276.81ms	-	unsure 🔍 -0% - +0% -5.19ms - +2.90ms
preact-local	1272.24ms - 1278.19ms	unsure 🔍 -0% - +0% -2.90ms - +5.19ms	-

usedJSHeapSize

Version	Avg time	vs preact-master	vs preact-local
preact-master	25.32ms - 25.33ms	-	unsure 🔍 -0% - +0% -0.00ms - +0.00ms
preact-local	25.32ms - 25.32ms	unsure 🔍 -0% - +0% -0.00ms - +0.00ms	-

filter_list

• Browser: chrome-headless 96.0.4664.45
• Sample size: 50
• Built by: Benchmarks #564

• Commit: aeed359

duration

Version	Avg time	vs preact-master	vs preact-local
preact-master	27.42ms - 28.04ms	-	faster ✔ 13% - 15% 4.07ms - 5.03ms
preact-local	31.92ms - 32.64ms	slower ❌ 15% - 18% 4.07ms - 5.03ms	-

usedJSHeapSize

Version	Avg time	vs preact-master	vs preact-local
preact-master	1.54ms - 1.55ms	-	unsure 🔍 -0% - -0% -0.01ms - -0.01ms
preact-local	1.55ms - 1.55ms	unsure 🔍 +0% - +0% +0.01ms - +0.01ms	-

hydrate1k

• Browser: chrome-headless 96.0.4664.45
• Sample size: 80
• Built by: Benchmarks #564

• Commit: aeed359

duration

Version	Avg time	vs preact-master	vs preact-local
preact-master	201.36ms - 220.16ms	-	unsure 🔍 -8% - +3% -17.51ms - +7.56ms
preact-local	207.44ms - 224.03ms	unsure 🔍 -4% - +8% -7.56ms - +17.51ms	-

usedJSHeapSize

Version	Avg time	vs preact-master	vs preact-local
preact-master	6.17ms - 6.23ms	-	unsure 🔍 -1% - +1% -0.05ms - +0.04ms
preact-local	6.17ms - 6.23ms	unsure 🔍 -1% - +1% -0.04ms - +0.05ms	-

many_updates

• Browser: chrome-headless 96.0.4664.45
• Sample size: 70
• Built by: Benchmarks #564

• Commit: aeed359

duration

Version	Avg time	vs preact-master	vs preact-local
preact-master	36.39ms - 38.60ms	-	unsure 🔍 -5% - +3% -1.80ms - +1.28ms
preact-local	36.68ms - 38.83ms	unsure 🔍 -3% - +5% -1.28ms - +1.80ms	-

usedJSHeapSize

Version	Avg time	vs preact-master	vs preact-local
preact-master	4.61ms - 4.61ms	-	unsure 🔍 -0% - +0% -0.00ms - +0.00ms
preact-local	4.61ms - 4.61ms	unsure 🔍 -0% - +0% -0.00ms - +0.00ms	-

text_update

• Browser: chrome-headless 96.0.4664.45
• Sample size: 50
• Built by: Benchmarks #564

• Commit: aeed359

duration

Version	Avg time	vs preact-master	vs preact-local
preact-master	2.79ms - 2.84ms	-	unsure 🔍 -1% - +1% -0.03ms - +0.04ms
preact-local	2.79ms - 2.83ms	unsure 🔍 -1% - +1% -0.04ms - +0.03ms	-

usedJSHeapSize

Version	Avg time	vs preact-master	vs preact-local
preact-master	0.78ms - 0.78ms	-	unsure 🔍 +0% - +0% +0.00ms - +0.00ms
preact-local	0.78ms - 0.78ms	unsure 🔍 -0% - -0% -0.00ms - -0.00ms	-

_{tachometer-reporter-action v2 for Benchmarks}

[coveralls]

Coverage remained the same at 99.627% when pulling aeed359 on perf-improvent-keyed into 8ce72fc on master.

[github-actions]

Size Change: -6 B (0%)

Total Size: 42.2 kB

Filename	Size	Change
dist/preact.min.js	4 kB	-2 B (0%)
dist/preact.module.js	3.99 kB	-3 B (0%)
dist/preact.umd.js	4.03 kB	-1 B

ℹ️ View Unchanged

Filename	Size	Change
compat/dist/compat.js	3.46 kB	0 B
compat/dist/compat.module.js	3.44 kB	0 B
compat/dist/compat.umd.js	3.51 kB	0 B
debug/dist/debug.js	2.99 kB	0 B
debug/dist/debug.module.js	2.98 kB	0 B
debug/dist/debug.umd.js	3.07 kB	0 B
devtools/dist/devtools.js	232 B	0 B
devtools/dist/devtools.module.js	240 B	0 B
devtools/dist/devtools.umd.js	308 B	0 B
dist/preact.js	3.97 kB	0 B
hooks/dist/hooks.js	1.17 kB	0 B
hooks/dist/hooks.module.js	1.18 kB	0 B
hooks/dist/hooks.umd.js	1.24 kB	0 B
jsx-runtime/dist/jsxRuntime.js	317 B	0 B
jsx-runtime/dist/jsxRuntime.module.js	327 B	0 B
jsx-runtime/dist/jsxRuntime.umd.js	395 B	0 B
test-utils/dist/testUtils.js	437 B	0 B
test-utils/dist/testUtils.module.js	439 B	0 B
test-utils/dist/testUtils.umd.js	515 B	0 B

_{compressed-size-action}