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lazy load postcss plugins #25317

Merged
merged 1 commit into from May 21, 2021
Merged

lazy load postcss plugins #25317

merged 1 commit into from May 21, 2021

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sokra
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@sokra sokra commented May 20, 2021

Improves startup performance

for vercel/front by ~1s

@ijjk
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ijjk commented May 20, 2021

Stats from current PR

Default Server Mode (Increase detected ⚠️)
General Overall increase ⚠️
vercel/next.js canary vercel/next.js perf/lazy-postcss-plugins Change
buildDuration 11.5s 11.8s ⚠️ +281ms
buildDurationCached 3.6s 3.2s -332ms
nodeModulesSize 46.7 MB 46.7 MB ⚠️ +1.5 kB
Page Load Tests Overall increase ✓
vercel/next.js canary vercel/next.js perf/lazy-postcss-plugins Change
/ failed reqs 0 0
/ total time (seconds) 2.093 2.043 -0.05
/ avg req/sec 1194.67 1223.89 +29.22
/error-in-render failed reqs 0 0
/error-in-render total time (seconds) 1.113 1.076 -0.04
/error-in-render avg req/sec 2245.95 2323.64 +77.69
Client Bundles (main, webpack, commons)
vercel/next.js canary vercel/next.js perf/lazy-postcss-plugins Change
framework-HASH.js gzip 39.3 kB 39.3 kB
main-HASH.js gzip 19.4 kB 19.4 kB
webpack-HASH.js gzip 994 B 994 B
Overall change 59.7 kB 59.7 kB
Legacy Client Bundles (polyfills)
vercel/next.js canary vercel/next.js perf/lazy-postcss-plugins Change
polyfills-HASH.js gzip 31.1 kB 31.1 kB
Overall change 31.1 kB 31.1 kB
Client Pages
vercel/next.js canary vercel/next.js perf/lazy-postcss-plugins Change
_app-HASH.js gzip 1.02 kB 1.02 kB
_error-HASH.js gzip 3.06 kB 3.06 kB
amp-HASH.js gzip 526 B 526 B
css-HASH.js gzip 334 B 334 B
hooks-HASH.js gzip 890 B 890 B
index-HASH.js gzip 262 B 262 B
link-HASH.js gzip 1.65 kB 1.65 kB
routerDirect..HASH.js gzip 331 B 331 B
withRouter-HASH.js gzip 329 B 329 B
bb14e60e810b..30f.css gzip 125 B 125 B
Overall change 8.54 kB 8.54 kB
Client Build Manifests
vercel/next.js canary vercel/next.js perf/lazy-postcss-plugins Change
_buildManifest.js gzip 390 B 390 B
Overall change 390 B 390 B
Rendered Page Sizes
vercel/next.js canary vercel/next.js perf/lazy-postcss-plugins Change
index.html gzip 559 B 559 B
link.html gzip 567 B 567 B
withRouter.html gzip 555 B 555 B
Overall change 1.68 kB 1.68 kB

Serverless Mode
General Overall increase ⚠️
vercel/next.js canary vercel/next.js perf/lazy-postcss-plugins Change
buildDuration 13.8s 13.7s -104ms
buildDurationCached 4.4s 4.1s -240ms
nodeModulesSize 46.7 MB 46.7 MB ⚠️ +1.5 kB
Client Bundles (main, webpack, commons)
vercel/next.js canary vercel/next.js perf/lazy-postcss-plugins Change
framework-HASH.js gzip 39.3 kB 39.3 kB
main-HASH.js gzip 19.4 kB 19.4 kB
webpack-HASH.js gzip 994 B 994 B
Overall change 59.7 kB 59.7 kB
Legacy Client Bundles (polyfills)
vercel/next.js canary vercel/next.js perf/lazy-postcss-plugins Change
polyfills-HASH.js gzip 31.1 kB 31.1 kB
Overall change 31.1 kB 31.1 kB
Client Pages
vercel/next.js canary vercel/next.js perf/lazy-postcss-plugins Change
_app-HASH.js gzip 1.02 kB 1.02 kB
_error-HASH.js gzip 3.06 kB 3.06 kB
amp-HASH.js gzip 526 B 526 B
css-HASH.js gzip 334 B 334 B
hooks-HASH.js gzip 890 B 890 B
index-HASH.js gzip 262 B 262 B
link-HASH.js gzip 1.65 kB 1.65 kB
routerDirect..HASH.js gzip 331 B 331 B
withRouter-HASH.js gzip 329 B 329 B
bb14e60e810b..30f.css gzip 125 B 125 B
Overall change 8.54 kB 8.54 kB
Client Build Manifests
vercel/next.js canary vercel/next.js perf/lazy-postcss-plugins Change
_buildManifest.js gzip 390 B 390 B
Overall change 390 B 390 B
Serverless bundles
vercel/next.js canary vercel/next.js perf/lazy-postcss-plugins Change
_error.js 16.9 kB 16.9 kB
404.html 2.42 kB 2.42 kB
500.html 2.41 kB 2.41 kB
amp.amp.html 10.8 kB 10.8 kB
amp.html 1.61 kB 1.61 kB
css.html 1.79 kB 1.79 kB
hooks.html 1.67 kB 1.67 kB
index.js 17.2 kB 17.2 kB
link.js 17.4 kB 17.4 kB
routerDirect.js 17.4 kB 17.4 kB
withRouter.js 17.4 kB 17.4 kB
Overall change 107 kB 107 kB

Webpack 4 Mode (Increase detected ⚠️)
General Overall increase ⚠️
vercel/next.js canary vercel/next.js perf/lazy-postcss-plugins Change
buildDuration 10.5s 10.8s ⚠️ +275ms
buildDurationCached 4.6s 4.4s -156ms
nodeModulesSize 46.7 MB 46.7 MB ⚠️ +1.5 kB
Page Load Tests Overall increase ✓
vercel/next.js canary vercel/next.js perf/lazy-postcss-plugins Change
/ failed reqs 0 0
/ total time (seconds) 2.129 2.117 -0.01
/ avg req/sec 1174 1180.98 +6.98
/error-in-render failed reqs 0 0
/error-in-render total time (seconds) 1.122 1.081 -0.04
/error-in-render avg req/sec 2227.35 2311.82 +84.47
Client Bundles (main, webpack, commons)
vercel/next.js canary vercel/next.js perf/lazy-postcss-plugins Change
677f882d2ed8..HASH.js gzip 13.3 kB 13.3 kB
framework.HASH.js gzip 39 kB 39 kB
main-HASH.js gzip 7.25 kB 7.25 kB
webpack-HASH.js gzip 751 B 751 B
Overall change 60.3 kB 60.3 kB
Legacy Client Bundles (polyfills)
vercel/next.js canary vercel/next.js perf/lazy-postcss-plugins Change
polyfills-HASH.js gzip 31.3 kB 31.3 kB
Overall change 31.3 kB 31.3 kB
Client Pages
vercel/next.js canary vercel/next.js perf/lazy-postcss-plugins Change
_app-HASH.js gzip 1.28 kB 1.28 kB
_error-HASH.js gzip 3.74 kB 3.74 kB
amp-HASH.js gzip 536 B 536 B
css-HASH.js gzip 339 B 339 B
hooks-HASH.js gzip 887 B 887 B
index-HASH.js gzip 227 B 227 B
link-HASH.js gzip 1.64 kB 1.64 kB
routerDirect..HASH.js gzip 303 B 303 B
withRouter-HASH.js gzip 302 B 302 B
e025d2764813..52f.css gzip 125 B 125 B
Overall change 9.38 kB 9.38 kB
Client Build Manifests
vercel/next.js canary vercel/next.js perf/lazy-postcss-plugins Change
_buildManifest.js gzip 420 B 420 B
Overall change 420 B 420 B
Rendered Page Sizes
vercel/next.js canary vercel/next.js perf/lazy-postcss-plugins Change
index.html gzip 613 B 613 B
link.html gzip 619 B 619 B
withRouter.html gzip 607 B 607 B
Overall change 1.84 kB 1.84 kB
Commit: aee72b6

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