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[Turbopack] Perform issue filtering without turbo-task functions#93885

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[Turbopack] Perform issue filtering without turbo-task functions#93885
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@bgw bgw commented May 16, 2026 •
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The filtering logic is generally very cheap, many issues are short-lived, and filtering is unlikely to trigger more than 1-2 turbo tasks per issue.

Wrapping it in another task per issue doesn't make a ton of sense.

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bgw commented May 16, 2026

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@bgw bgw changed the title wip issue filtering without turbo-task functions [Turbopack] Perform issue filtering without using turbo-task functions May 16, 2026
@bgw bgw changed the title [Turbopack] Perform issue filtering without using turbo-task functions [Turbopack] Perform issue filtering without turbo-task functions May 16, 2026
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Stats from current PR

🟢 3 improvements

Metric Canary PR Change Trend
Turbo Build Time 4.980s 4.686s 🟢 294ms (-6%) ▄▁▃█▃
Turbo Build Time (cached) 5.037s 4.659s 🟢 378ms (-8%) ▄▁▆█▄
Cold (First Request) 1.292s 1.178s 🟢 114ms (-9%) ▄▁▄█▅
📊 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) 813ms 811ms ✓ ▂▅▄██
Cold (Ready in log) 797ms 777ms ✓ ▅▁▅▇▄
Cold (First Request) 1.292s 1.178s 🟢 114ms (-9%) ▄▁▄█▅
Warm (Listen) 811ms 812ms ✓ ▁▆▁█▆
Warm (Ready in log) 777ms 775ms ✓ ▇▁██▄
Warm (First Request) 582ms 575ms ✓ ▆▁██▄
📦 Dev Server (Webpack) (Legacy)

📦 Dev Server (Webpack)

Metric Canary PR Change Trend
Cold (Listen) 811ms 811ms ✓ ▁▇▇▇▅
Cold (Ready in log) 774ms 774ms ✓ ▄▅▇█▄
Cold (First Request) 3.177s 3.163s ✓ ▄▄▆█▃
Warm (Listen) 811ms 810ms ✓ ▁▅▅▅▅
Warm (Ready in log) 773ms 773ms ✓ ▄▅▅█▄
Warm (First Request) 3.205s 3.237s ✓ ▆▄▄█▄

⚡ Production Builds

Metric Canary PR Change Trend
Fresh Build 4.980s 4.686s 🟢 294ms (-6%) ▄▁▃█▃
Cached Build 5.037s 4.659s 🟢 378ms (-8%) ▄▁▆█▄
📦 Production Builds (Webpack) (Legacy)

📦 Production Builds (Webpack)

Metric Canary PR Change Trend
Fresh Build 23.747s 23.752s ✓ ▁▂█▅█
Cached Build 23.738s 23.674s ✓ ▃▄█▇▂
node_modules Size 506 MB 506 MB ✓ ▁▁▁▁▁
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Canary PR Change
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📎 Tarball URL 
https://vercel-packages.vercel.app/next/commits/b6fe269e875d674f67d9bd3a75410d0bcb51bf10/next

Commit: b6fe269

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