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Devirtualize the backend api inside of turbo_tasks and turbo-tasks-backend#94007

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Devirtualize the backend api inside of turbo_tasks and turbo-tasks-backend#94007
lukesandberg wants to merge 1 commit into
simplify_no_op_backing_storefrom
devirtualize_backend_operations

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lukesandberg commented May 21, 2026

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Stats from current PR

✅ No significant changes detected

📊 All Metrics
📖 Metrics Glossary

Dev Server Metrics:

  • Listen = TCP port starts accepting connections
  • First Request = HTTP server returns successful response
  • Cold = Fresh build (no cache)
  • Warm = With cached build artifacts

Build Metrics:

  • Fresh = Clean build (no .next directory)
  • Cached = With existing .next directory

Change Thresholds:

  • Time: Changes < 50ms AND < 10%, OR < 2% are insignificant
  • Size: Changes < 1KB AND < 1% are insignificant
  • All other changes are flagged to catch regressions

⚡ Dev Server

Metric Canary PR Change Trend
Cold (Listen) 810ms 810ms █████
Cold (Ready in log) 782ms 782ms ███▇▇
Cold (First Request) 1.192s 1.201s ▆▄▆▄▃
Warm (Listen) 810ms 810ms █████
Warm (Ready in log) 782ms 782ms █▇█▇▇
Warm (First Request) 595ms 597ms ▇▇▆▆▃
📦 Dev Server (Webpack) (Legacy)

📦 Dev Server (Webpack)

Metric Canary PR Change Trend
Cold (Listen) 811ms 810ms █▁███
Cold (Ready in log) 786ms 784ms ▆▁█▇▆
Cold (First Request) 3.198s 3.222s ▂▁▇▅▄
Warm (Listen) 810ms 810ms █▁███
Warm (Ready in log) 785ms 785ms ▆▁█▇▆
Warm (First Request) 3.251s 3.256s ▂▁▆▄▂

⚡ Production Builds

Metric Canary PR Change Trend
Fresh Build 4.646s 4.649s ▅▃▇▄▅
Cached Build 4.666s 4.695s ▆▅▇▆▅
📦 Production Builds (Webpack) (Legacy)

📦 Production Builds (Webpack)

Metric Canary PR Change Trend
Fresh Build 24.162s 23.981s ▂▁█▂▁
Cached Build 24.088s 24.053s ▂▁▆▂▁
node_modules Size 506 MB 506 MB ▁▁▁▁▁
📦 Bundle Sizes

Bundle Sizes

⚡ Turbopack

Client

Main Bundles
Canary PR Change
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0bw8hgkrnyz52.js gzip 169 B N/A -
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turbopack-1p..vrdm.js gzip N/A 4.2 kB -
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Total 469 kB 469 kB ⚠️ +90 B

Server

Middleware
Canary PR Change
middleware-b..fest.js gzip 716 B 717 B
Total 716 B 717 B ⚠️ +1 B
Build Details
Build Manifests
Canary PR Change
_buildManifest.js gzip 434 B 433 B
Total 434 B 433 B ✅ -1 B

📦 Webpack

Client

Main Bundles
Canary PR Change
2258-HASH.js gzip 61.4 kB N/A -
2266-HASH.js gzip 4.69 kB N/A -
3317.HASH.js gzip 169 B N/A -
4866-HASH.js gzip 5.64 kB N/A -
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framework-HASH.js gzip 59.5 kB 59.5 kB
main-app-HASH.js gzip 254 B 255 B
main-HASH.js gzip 39.9 kB 39.9 kB
webpack-HASH.js gzip 1.68 kB 1.68 kB
175fd0fd-HASH.js gzip N/A 62.8 kB -
2596-HASH.js gzip N/A 5.63 kB -
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Total 236 kB 236 kB ✅ -100 B
Polyfills
Canary PR Change
polyfills-HASH.js gzip 39.4 kB 39.4 kB
Total 39.4 kB 39.4 kB
Pages
Canary PR Change
_app-HASH.js gzip 193 B 193 B
_error-HASH.js gzip 181 B 182 B
css-HASH.js gzip 334 B 332 B
dynamic-HASH.js gzip 1.79 kB 1.81 kB
edge-ssr-HASH.js gzip 255 B 255 B
head-HASH.js gzip 351 B 348 B
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image-HASH.js gzip 580 B 580 B
index-HASH.js gzip 257 B 259 B
link-HASH.js gzip 2.51 kB 2.52 kB
routerDirect..HASH.js gzip 318 B 319 B
script-HASH.js gzip 387 B 386 B
withRouter-HASH.js gzip 316 B 316 B
1afbb74e6ecf..834.css gzip 106 B 106 B
Total 7.97 kB 7.99 kB ⚠️ +19 B

Server

Edge SSR
Canary PR Change
edge-ssr.js gzip 126 kB 126 kB
page.js gzip 276 kB 270 kB 🟢 5.29 kB (-2%)
Total 402 kB 396 kB ✅ -5.5 kB
Middleware
Canary PR Change
middleware-b..fest.js gzip 620 B 614 B
middleware-r..fest.js gzip 155 B 155 B
middleware.js gzip 44.5 kB 44.9 kB 🔴 +468 B (+1%)
edge-runtime..pack.js gzip 842 B 842 B
Total 46.1 kB 46.5 kB ⚠️ +462 B
Build Details
Build Manifests
Canary PR Change
_buildManifest.js gzip 719 B 717 B
Total 719 B 717 B ✅ -2 B
Build Cache
Canary PR Change
0.pack gzip 4.49 MB 4.49 MB
index.pack gzip 115 kB 113 kB 🟢 1.46 kB (-1%)
index.pack.old gzip 113 kB 116 kB 🔴 +2.65 kB (+2%)
Total 4.72 MB 4.72 MB ✅ -3.29 kB

🔄 Shared (bundler-independent)

Runtimes
Canary PR Change
app-page-exp...dev.js gzip 350 kB 351 kB
app-page-exp..prod.js gzip 195 kB 195 kB
app-page-tur...dev.js gzip 350 kB 350 kB
app-page-tur..prod.js gzip 194 kB 194 kB
app-page-tur...dev.js gzip 346 kB 347 kB
app-page-tur..prod.js gzip 192 kB 192 kB
app-page.run...dev.js gzip 347 kB 347 kB
app-page.run..prod.js gzip 193 kB 193 kB
app-route-ex...dev.js gzip 77.5 kB 77.5 kB
app-route-ex..prod.js gzip 52.9 kB 52.9 kB
app-route-tu...dev.js gzip 77.6 kB 77.6 kB
app-route-tu..prod.js gzip 52.9 kB 52.9 kB
app-route-tu...dev.js gzip 77.2 kB 77.2 kB
app-route-tu..prod.js gzip 52.7 kB 52.7 kB
app-route.ru...dev.js gzip 77.1 kB 77.1 kB
app-route.ru..prod.js gzip 52.7 kB 52.7 kB
dist_client_...dev.js gzip 324 B 324 B
dist_client_...dev.js gzip 326 B 326 B
dist_client_...dev.js gzip 318 B 318 B
dist_client_...dev.js gzip 317 B 317 B
pages-api-tu...dev.js gzip 44.3 kB 44.3 kB
pages-api-tu..prod.js gzip 33.8 kB 33.8 kB
pages-api.ru...dev.js gzip 44.3 kB 44.3 kB
pages-api.ru..prod.js gzip 33.7 kB 33.7 kB
pages-turbo....dev.js gzip 53.7 kB 53.7 kB
pages-turbo...prod.js gzip 39.4 kB 39.4 kB
pages.runtim...dev.js gzip 53.6 kB 53.6 kB
pages.runtim..prod.js gzip 39.4 kB 39.4 kB
server.runti..prod.js gzip 63.1 kB 63.1 kB
use-cache-pr...dev.js gzip 69.7 kB 69.7 kB
use-cache-pr...dev.js gzip 69.7 kB 69.7 kB
use-cache-pr...dev.js gzip 68 kB 68 kB
use-cache-pr...dev.js gzip 68 kB 68 kB
Total 3.37 MB 3.37 MB ⚠️ +345 B
📝 Changed Files (17 files)

Files with changes:

  • app-page-exp..ntime.dev.js
  • app-page-exp..time.prod.js
  • app-page-tur..ntime.dev.js
  • app-page-tur..time.prod.js
  • app-page-tur..ntime.dev.js
  • app-page-tur..time.prod.js
  • app-page.runtime.dev.js
  • app-page.runtime.prod.js
  • pages-api-tu..ntime.dev.js
  • pages-api-tu..time.prod.js
  • pages-turbo...ntime.dev.js
  • pages-turbo...time.prod.js
  • server.runtime.prod.js
  • use-cache-pr..ntime.dev.js
  • use-cache-pr..ntime.dev.js
  • use-cache-pr..ntime.dev.js
  • use-cache-pr..ntime.dev.js
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app-page-exp..ntime.dev.js
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app-page-exp..time.prod.js

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app-page-tur..ntime.dev.js
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app-page-tur..time.prod.js

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app-page-tur..ntime.dev.js
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app-page-tur..time.prod.js

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app-page.runtime.dev.js
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app-page.runtime.prod.js

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pages-api-tu..ntime.dev.js

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pages-api-tu..time.prod.js

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pages-turbo...ntime.dev.js

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pages-turbo...time.prod.js

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server.runtime.prod.js

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use-cache-pr..ntime.dev.js

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use-cache-pr..ntime.dev.js

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use-cache-pr..ntime.dev.js

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use-cache-pr..ntime.dev.js

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📎 Tarball URL
https://vercel-packages.vercel.app/next/commits/64fac9446c01043d3382f50c0217ce9302a17174/next

Commit: 64fac94

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Tests Passed

Commit: 64fac94

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