fix: settle aborted parallel steps before completing abortParallelWorkflow by pranaygp · Pull Request #2244 · vercel/workflow

pranaygp · 2026-06-04T06:34:21Z

Summary

keep the parallel longStep() promises alive as a named promise so the workflow can await them after aborting
wait for those in-flight steps to observe the abort before returning timed out
target the AbortController > abortParallelWorkflow: abort cancels all parallel steps CI timeout seen in Tests run 26914721179

Validation

pnpm install
pnpm -r --filter workflow... build
WORKFLOW_PUBLIC_MANIFEST=1 pnpm dev in workbench/nextjs-turbopack
DEPLOYMENT_URL="http://localhost:3000" APP_NAME="nextjs-turbopack" pnpm vitest run packages/core/e2e/e2e.test.ts -t "abortParallelWorkflow: abort cancels all parallel steps"

Notes

The focused local E2E did not reach the assertion because the local Next dev app failed earlier with Workflow "workflow//./workflows/99_e2e//abortParallelWorkflow" is not registered in the current deployment and a concurrent Module not found: Can't resolve <dynamic> warning from packages/core/dist/runtime/world.js.
That local manifest/bundling issue appears unrelated to this workflow logic change, so CI is the best verification for the actual timeout fix.

changeset-bot · 2026-06-04T06:34:24Z

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vercel · 2026-06-04T06:34:30Z

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github-actions · 2026-06-04T06:34:37Z

📊 Benchmark Results

📈 Comparing against baseline from main branch. Green 🟢 = faster, Red 🔺 = slower.

workflow with no steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Express	0.041s (-1.0%)	1.006s (~)	0.965s	10	1.00x
💻 Local	Nitro	0.044s (+0.9%)	1.006s (~)	0.962s	10	1.08x
🐘 Postgres	Express	0.057s (-12.2% 🟢)	1.012s (~)	0.954s	10	1.42x
🐘 Postgres	Nitro	0.059s (-34.2% 🟢)	1.019s (-1.2%)	0.959s	10	1.46x
💻 Local	Next.js (Turbopack)	0.062s (-2.5%)	1.007s (~)	0.945s	10	1.53x
🐘 Postgres	Next.js (Turbopack)	0.071s (+1.6%)	1.024s (+1.1%)	0.953s	10	1.75x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	0.306s (-99.0% 🟢)	2.228s (-93.2% 🟢)	1.922s	10	1.00x
▲ Vercel	Next.js (Turbopack)	0.332s (-28.9% 🟢)	1.959s (-8.5% 🟢)	1.627s	10	1.09x
▲ Vercel	Express	⚠️ missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 1 step

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Express	1.092s (~)	2.006s (~)	0.914s	10	1.00x
💻 Local	Nitro	1.102s (+0.7%)	2.006s (~)	0.904s	10	1.01x
🐘 Postgres	Express	1.102s (~)	2.010s (~)	0.908s	10	1.01x
🐘 Postgres	Nitro	1.117s (-2.2%)	2.008s (-1.3%)	0.891s	10	1.02x
💻 Local	Next.js (Turbopack)	1.141s (~)	2.006s (~)	0.865s	10	1.04x
🐘 Postgres	Next.js (Turbopack)	1.192s (+4.5%)	2.024s (+0.8%)	0.832s	10	1.09x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	1.559s (-0.8%)	3.286s (-13.8% 🟢)	1.727s	10	1.00x
▲ Vercel	Next.js (Turbopack)	1.636s (-6.7% 🟢)	3.203s (-1.6%)	1.567s	10	1.05x
▲ Vercel	Express	⚠️ missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 10 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Express	10.501s (~)	11.023s (~)	0.522s	3	1.00x
🐘 Postgres	Express	10.544s (~)	11.020s (~)	0.476s	3	1.00x
💻 Local	Nitro	10.547s (~)	11.022s (~)	0.475s	3	1.00x
🐘 Postgres	Nitro	10.588s (-1.0%)	11.022s (~)	0.434s	3	1.01x
💻 Local	Next.js (Turbopack)	10.781s (~)	11.023s (~)	0.242s	3	1.03x
🐘 Postgres	Next.js (Turbopack)	10.813s (~)	11.020s (~)	0.207s	3	1.03x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	13.491s (+2.2%)	15.260s (+3.2%)	1.769s	2	1.00x
▲ Vercel	Next.js (Turbopack)	13.895s (+0.8%)	15.409s (+1.4%)	1.514s	2	1.03x
▲ Vercel	Express	⚠️ missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 25 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Express	13.715s (~)	14.029s (~)	0.314s	5	1.00x
🐘 Postgres	Express	13.783s (-1.1%)	14.017s (~)	0.233s	5	1.00x
💻 Local	Nitro	13.817s (~)	14.025s (~)	0.208s	5	1.01x
🐘 Postgres	Nitro	14.270s (-2.7%)	14.624s (-2.7%)	0.353s	5	1.04x
💻 Local	Next.js (Turbopack)	14.394s (~)	15.030s (~)	0.636s	4	1.05x
🐘 Postgres	Next.js (Turbopack)	14.670s (+2.0%)	15.271s (+1.7%)	0.601s	4	1.07x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	20.568s (-11.2% 🟢)	22.227s (-11.6% 🟢)	1.659s	3	1.00x
▲ Vercel	Next.js (Turbopack)	22.625s (+3.9%)	24.155s (+2.2%)	1.530s	3	1.10x
▲ Vercel	Express	⚠️ missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 50 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Express	12.343s (~)	13.026s (~)	0.683s	7	1.00x
🐘 Postgres	Nitro	12.484s (-1.6%)	13.020s (-2.1%)	0.536s	7	1.01x
🐘 Postgres	Express	12.519s (~)	13.016s (~)	0.497s	7	1.01x
💻 Local	Nitro	12.524s (+1.0%)	13.024s (~)	0.500s	7	1.01x
🐘 Postgres	Next.js (Turbopack)	13.482s (-1.2%)	14.025s (~)	0.543s	7	1.09x
💻 Local	Next.js (Turbopack)	13.698s (+0.6%)	14.028s (~)	0.331s	7	1.11x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	29.020s (-14.3% 🟢)	31.277s (-13.4% 🟢)	2.257s	4	1.00x
▲ Vercel	Next.js (Turbopack)	29.779s (+1.3%)	31.735s (+2.9%)	1.956s	3	1.03x
▲ Vercel	Express	⚠️ missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

Promise.all with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.169s (-2.1%)	2.007s (~)	0.838s	15	1.00x
💻 Local	Express	1.205s (-2.6%)	2.006s (~)	0.801s	15	1.03x
💻 Local	Nitro	1.220s (~)	2.006s (~)	0.786s	15	1.04x
🐘 Postgres	Nitro	1.250s (-0.7%)	2.009s (~)	0.759s	15	1.07x
🐘 Postgres	Next.js (Turbopack)	1.327s (+7.7% 🔺)	2.021s (+0.7%)	0.695s	15	1.14x
💻 Local	Next.js (Turbopack)	1.343s (+1.4%)	2.005s (~)	0.663s	15	1.15x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.534s (-33.2% 🟢)	4.044s (-21.2% 🟢)	1.510s	8	1.00x
▲ Vercel	Next.js (Turbopack)	3.136s (+21.4% 🔺)	4.601s (+12.4% 🔺)	1.465s	8	1.24x
▲ Vercel	Express	⚠️ missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

Promise.all with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.230s (-2.4%)	2.007s (~)	0.777s	15	1.00x
🐘 Postgres	Nitro	1.269s (-6.6% 🟢)	2.023s (~)	0.754s	15	1.03x
🐘 Postgres	Next.js (Turbopack)	1.373s (-0.8%)	2.006s (~)	0.633s	15	1.12x
💻 Local	Nitro	1.665s (-5.2% 🟢)	2.006s (~)	0.341s	15	1.35x
💻 Local	Express	1.732s (+1.6%)	2.005s (~)	0.273s	15	1.41x
💻 Local	Next.js (Turbopack)	1.829s (-4.0%)	2.140s (-7.5% 🟢)	0.311s	15	1.49x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	3.673s (-16.3% 🟢)	5.072s (-10.6% 🟢)	1.399s	6	1.00x
▲ Vercel	Nitro	3.999s (-5.5% 🟢)	5.586s (-7.5% 🟢)	1.587s	6	1.09x
▲ Vercel	Express	⚠️ missing	-	-	-	-

🔍 Observability: Next.js (Turbopack) | Nitro

Promise.all with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.323s (-5.6% 🟢)	2.007s (~)	0.685s	15	1.00x
🐘 Postgres	Nitro	1.518s (+3.2%)	2.154s (-7.1% 🟢)	0.636s	14	1.15x
🐘 Postgres	Next.js (Turbopack)	1.827s (+7.6% 🔺)	2.525s (+17.8% 🔺)	0.698s	12	1.38x
💻 Local	Nitro	4.645s (-2.1%)	5.011s (-3.3%)	0.367s	7	3.51x
💻 Local	Next.js (Turbopack)	4.663s (-15.3% 🟢)	5.181s (-16.6% 🟢)	0.518s	6	3.53x
💻 Local	Express	4.915s (+2.0%)	5.512s (+3.1%)	0.597s	6	3.72x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	4.882s (-64.5% 🟢)	6.057s (-60.7% 🟢)	1.174s	5	1.00x
▲ Vercel	Next.js (Turbopack)	6.543s (-5.7% 🟢)	8.287s (-4.8%)	1.744s	4	1.34x
▲ Vercel	Express	⚠️ missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

Promise.race with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.175s (-1.0%)	2.008s (~)	0.832s	15	1.00x
🐘 Postgres	Next.js (Turbopack)	1.244s (-0.8%)	2.012s (~)	0.768s	15	1.06x
🐘 Postgres	Nitro	1.351s (+3.0%)	2.084s (~)	0.733s	15	1.15x
💻 Local	Next.js (Turbopack)	1.403s (+1.6%)	2.006s (~)	0.603s	15	1.19x
💻 Local	Express	1.507s (-0.8%)	2.006s (~)	0.500s	15	1.28x
💻 Local	Nitro	1.590s (-3.7%)	2.006s (-3.2%)	0.416s	15	1.35x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.692s (-6.5% 🟢)	4.348s (+1.4%)	1.656s	7	1.00x
▲ Vercel	Next.js (Turbopack)	2.946s (-26.1% 🟢)	4.373s (-20.7% 🟢)	1.427s	7	1.09x
▲ Vercel	Express	⚠️ missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

Promise.race with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.217s (-3.1%)	2.007s (~)	0.790s	15	1.00x
🐘 Postgres	Next.js (Turbopack)	1.416s (-2.4%)	2.008s (-3.2%)	0.592s	15	1.16x
🐘 Postgres	Nitro	1.425s (+14.1% 🔺)	2.084s (+3.6%)	0.659s	15	1.17x
💻 Local	Nitro	1.915s (-9.3% 🟢)	2.317s (-15.3% 🟢)	0.402s	13	1.57x
💻 Local	Express	1.997s (+5.3% 🔺)	2.470s (+6.7% 🔺)	0.473s	13	1.64x
💻 Local	Next.js (Turbopack)	2.014s (-3.4%)	2.736s (-3.2%)	0.722s	11	1.66x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	3.534s (-23.8% 🟢)	4.560s (-29.1% 🟢)	1.026s	7	1.00x
▲ Vercel	Nitro	3.790s (+1.6%)	5.455s (+1.9%)	1.664s	6	1.07x
▲ Vercel	Express	⚠️ missing	-	-	-	-

🔍 Observability: Next.js (Turbopack) | Nitro

Promise.race with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.325s (-5.0% 🟢)	2.007s (~)	0.682s	15	1.00x
🐘 Postgres	Nitro	1.541s (+6.0% 🔺)	2.151s (+3.5%)	0.610s	14	1.16x
🐘 Postgres	Next.js (Turbopack)	1.799s (+4.5%)	2.408s (+8.4% 🔺)	0.609s	13	1.36x
💻 Local	Next.js (Turbopack)	4.942s (-14.7% 🟢)	5.514s (-11.3% 🟢)	0.571s	6	3.73x
💻 Local	Nitro	4.957s (-16.2% 🟢)	5.514s (-14.0% 🟢)	0.558s	6	3.74x
💻 Local	Express	5.247s (-0.9%)	5.683s (-2.8%)	0.435s	6	3.96x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	4.720s (-26.7% 🟢)	6.377s (-20.6% 🟢)	1.657s	5	1.00x
▲ Vercel	Next.js (Turbopack)	5.342s (-27.0% 🟢)	6.865s (-30.2% 🟢)	1.523s	5	1.13x
▲ Vercel	Express	⚠️ missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	0.583s (+2.3%)	1.041s (+3.4%)	0.458s	58	1.00x
💻 Local	Express	0.593s (-1.0%)	1.005s (~)	0.411s	60	1.02x
💻 Local	Nitro	0.608s (+2.9%)	1.005s (~)	0.396s	60	1.04x
🐘 Postgres	Nitro	0.622s (+24.2% 🔺)	1.013s (~)	0.392s	60	1.07x
🐘 Postgres	Next.js (Turbopack)	0.697s (-17.0% 🟢)	1.045s (-1.4%)	0.348s	58	1.19x
💻 Local	Next.js (Turbopack)	0.875s (~)	1.022s (-1.7%)	0.146s	59	1.50x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	4.915s (-4.9%)	6.246s (-11.7% 🟢)	1.331s	10	1.00x
▲ Vercel	Next.js (Turbopack)	5.399s (-4.9%)	6.861s (-6.7% 🟢)	1.462s	9	1.10x
▲ Vercel	Express	⚠️ missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.304s (-3.9%)	2.007s (~)	0.703s	45	1.00x
🐘 Postgres	Nitro	1.319s (-8.5% 🟢)	2.010s (~)	0.692s	45	1.01x
💻 Local	Express	1.505s (-1.5%)	2.006s (-1.1%)	0.501s	45	1.15x
🐘 Postgres	Next.js (Turbopack)	1.582s (-17.3% 🟢)	2.009s (-4.4%)	0.427s	45	1.21x
💻 Local	Nitro	1.677s (+11.8% 🔺)	2.122s (+4.6%)	0.445s	43	1.29x
💻 Local	Next.js (Turbopack)	2.127s (+1.2%)	3.007s (~)	0.880s	30	1.63x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	11.988s (-13.7% 🟢)	13.863s (-10.8% 🟢)	1.875s	7	1.00x
▲ Vercel	Next.js (Turbopack)	12.126s (-28.8% 🟢)	13.906s (-24.4% 🟢)	1.780s	7	1.01x
▲ Vercel	Express	⚠️ missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	2.703s (-2.3%)	3.058s (-2.5%)	0.355s	40	1.00x
🐘 Postgres	Nitro	3.047s (+15.5% 🔺)	3.575s (+7.6% 🔺)	0.528s	34	1.13x
💻 Local	Express	3.270s (+1.2%)	3.977s (~)	0.707s	31	1.21x
💻 Local	Nitro	3.285s (+4.2%)	4.042s (+2.5%)	0.757s	30	1.22x
🐘 Postgres	Next.js (Turbopack)	3.864s (+1.0%)	4.454s (+8.4% 🔺)	0.591s	28	1.43x
💻 Local	Next.js (Turbopack)	4.370s (-1.5%)	5.010s (~)	0.640s	24	1.62x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	24.259s (-14.3% 🟢)	26.575s (-12.7% 🟢)	2.316s	5	1.00x
▲ Vercel	Next.js (Turbopack)	27.297s (-8.2% 🟢)	28.803s (-8.8% 🟢)	1.507s	5	1.13x
▲ Vercel	Express	⚠️ missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.200s (-9.8% 🟢)	1.008s (~)	0.808s	60	1.00x
🐘 Postgres	Express	0.204s (-10.3% 🟢)	1.006s (~)	0.801s	60	1.02x
🐘 Postgres	Next.js (Turbopack)	0.351s (+33.4% 🔺)	1.017s (+1.2%)	0.666s	59	1.76x
💻 Local	Express	0.439s (+4.3%)	1.004s (~)	0.566s	60	2.19x
💻 Local	Nitro	0.459s (+1.8%)	1.004s (~)	0.545s	60	2.30x
💻 Local	Next.js (Turbopack)	0.605s (-5.6% 🟢)	1.005s (-5.1% 🟢)	0.399s	60	3.03x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.327s (-1.0%)	3.840s (-2.5%)	1.513s	16	1.00x
▲ Vercel	Next.js (Turbopack)	2.592s (-20.1% 🟢)	4.009s (-14.6% 🟢)	1.417s	15	1.11x
▲ Vercel	Express	⚠️ missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	0.307s (-14.8% 🟢)	1.006s (~)	0.699s	90	1.00x
🐘 Postgres	Nitro	0.344s (-12.6% 🟢)	1.012s (-0.8%)	0.668s	89	1.12x
🐘 Postgres	Next.js (Turbopack)	0.459s (-3.6%)	1.022s (+1.6%)	0.564s	89	1.49x
💻 Local	Express	2.132s (+1.2%)	2.796s (+5.3% 🔺)	0.664s	33	6.94x
💻 Local	Nitro	2.149s (+4.0%)	2.685s (+1.8%)	0.536s	34	6.99x
💻 Local	Next.js (Turbopack)	2.269s (-10.9% 🟢)	2.979s (-9.6% 🟢)	0.709s	31	7.38x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	4.892s (-28.6% 🟢)	6.291s (-25.5% 🟢)	1.398s	15	1.00x
▲ Vercel	Nitro	4.960s (-17.7% 🟢)	6.393s (-16.3% 🟢)	1.433s	15	1.01x
▲ Vercel	Express	⚠️ missing	-	-	-	-

🔍 Observability: Next.js (Turbopack) | Nitro

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	0.594s (-13.9% 🟢)	1.006s (~)	0.412s	120	1.00x
🐘 Postgres	Nitro	0.757s (+21.7% 🔺)	1.191s (+11.0% 🔺)	0.434s	101	1.27x
🐘 Postgres	Next.js (Turbopack)	0.888s (-8.4% 🟢)	1.266s (-19.1% 🟢)	0.378s	95	1.49x
💻 Local	Nitro	9.339s (-1.0%)	10.025s (~)	0.685s	13	15.72x
💻 Local	Express	10.018s (+5.7% 🔺)	10.528s (+5.0% 🔺)	0.510s	12	16.86x
💻 Local	Next.js (Turbopack)	10.444s (-4.6%)	11.212s (-4.6%)	0.768s	11	17.58x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	13.886s (-19.4% 🟢)	15.338s (-17.7% 🟢)	1.453s	8	1.00x
▲ Vercel	Nitro	14.399s (-29.1% 🟢)	16.281s (-26.6% 🟢)	1.882s	8	1.04x
▲ Vercel	Express	⚠️ missing	-	-	-	-

🔍 Observability: Next.js (Turbopack) | Nitro

Stream Benchmarks (includes TTFB metrics)

workflow with stream

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	1.155s (-0.8%)	2.005s (~)	0.011s (-4.3%)	2.018s (~)	0.864s	10	1.00x
🐘 Postgres	Express	1.156s (-1.2%)	2.001s (~)	0.001s (-33.3% 🟢)	2.009s (~)	0.853s	10	1.00x
💻 Local	Express	1.161s (~)	2.005s (~)	0.010s (-1.9%)	2.017s (~)	0.856s	10	1.01x
🐘 Postgres	Nitro	1.211s (+4.5%)	1.992s (~)	0.001s (+50.0% 🔺)	2.027s (+0.7%)	0.816s	10	1.05x
💻 Local	Next.js (Turbopack)	1.224s (+1.3%)	2.003s (~)	0.011s (-10.8% 🟢)	2.018s (~)	0.794s	10	1.06x
🐘 Postgres	Next.js (Turbopack)	1.257s (+2.0%)	2.001s (~)	0.001s (-30.8% 🟢)	2.008s (~)	0.751s	10	1.09x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	2.422s (+12.1% 🔺)	3.397s (+13.6% 🔺)	1.819s (+51.8% 🔺)	5.615s (+21.1% 🔺)	3.192s	10	1.00x
▲ Vercel	Nitro	2.438s (+9.0% 🔺)	3.433s (+9.8% 🔺)	1.722s (+83.4% 🔺)	5.561s (+21.5% 🔺)	3.124s	10	1.01x
▲ Vercel	Express	⚠️ missing	-	-	-	-	-

🔍 Observability: Next.js (Turbopack) | Nitro

stream pipeline with 5 transform steps (1MB)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.583s (~)	2.005s (~)	0.003s (-12.0% 🟢)	2.022s (~)	0.438s	30	1.00x
💻 Local	Nitro	1.588s (+0.7%)	2.009s (~)	0.012s (+15.6% 🔺)	2.023s (~)	0.435s	30	1.00x
💻 Local	Express	1.588s (+1.6%)	2.009s (~)	0.011s (+1.9%)	2.022s (~)	0.434s	30	1.00x
🐘 Postgres	Nitro	1.716s (+3.8%)	2.074s (~)	0.003s (-1.8%)	2.103s (+0.8%)	0.388s	29	1.08x
💻 Local	Next.js (Turbopack)	1.732s (-3.4%)	2.009s (~)	0.011s (-13.1% 🟢)	2.023s (~)	0.291s	30	1.09x
🐘 Postgres	Next.js (Turbopack)	1.898s (+10.7% 🔺)	2.350s (+16.9% 🔺)	0.003s (-24.1% 🟢)	2.371s (+17.2% 🔺)	0.473s	26	1.20x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	5.779s (-4.1%)	7.028s (-0.7%)	0.300s (-36.1% 🟢)	7.717s (-4.0%)	1.938s	8	1.00x
▲ Vercel	Next.js (Turbopack)	5.793s (-5.7% 🟢)	6.769s (-9.0% 🟢)	0.241s (+18.8% 🔺)	7.404s (-7.9% 🟢)	1.611s	9	1.00x
▲ Vercel	Express	⚠️ missing	-	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

10 parallel streams (1MB each)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	0.674s (-5.4% 🟢)	1.032s (~)	0.000s (-50.8% 🟢)	1.047s (~)	0.373s	59	1.00x
🐘 Postgres	Next.js (Turbopack)	0.996s (+29.3% 🔺)	1.440s (+39.1% 🔺)	0.000s (-29.3% 🟢)	1.482s (+41.1% 🔺)	0.485s	41	1.48x
🐘 Postgres	Nitro	1.075s (+12.4% 🔺)	1.395s (+9.8% 🔺)	0.000s (-42.9% 🟢)	1.463s (+11.8% 🔺)	0.389s	42	1.59x
💻 Local	Express	1.504s (+8.0% 🔺)	2.015s (~)	0.000s (-38.5% 🟢)	2.017s (~)	0.513s	30	2.23x
💻 Local	Next.js (Turbopack)	1.517s (+2.0%)	2.014s (~)	0.001s (+200.0% 🔺)	2.017s (~)	0.500s	30	2.25x
💻 Local	Nitro	1.585s (+14.4% 🔺)	2.012s (~)	0.000s (-51.0% 🟢)	2.187s (+8.5% 🔺)	0.602s	29	2.35x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	3.636s (-2.8%)	4.866s (-3.2%)	0.000s (-91.7% 🟢)	5.358s (-2.9%)	1.721s	12	1.00x
▲ Vercel	Next.js (Turbopack)	3.820s (-9.2% 🟢)	4.964s (-1.4%)	0.000s (+Infinity% 🔺)	5.323s (-2.7%)	1.503s	12	1.05x
▲ Vercel	Express	⚠️ missing	-	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

fan-out fan-in 10 streams (1MB each)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.251s (-12.6% 🟢)	2.034s (-4.7%)	0.000s (-51.7% 🟢)	2.063s (-4.5%)	0.812s	30	1.00x
🐘 Postgres	Nitro	1.954s (+1.4%)	2.545s (+8.7% 🔺)	0.000s (-45.8% 🟢)	2.568s (+8.5% 🔺)	0.614s	24	1.56x
🐘 Postgres	Next.js (Turbopack)	2.092s (+23.2% 🔺)	2.611s (+17.8% 🔺)	0.000s (-100.0% 🟢)	2.646s (+18.0% 🔺)	0.554s	23	1.67x
💻 Local	Next.js (Turbopack)	3.148s (+6.2% 🔺)	3.731s (+3.2%)	0.000s (-54.5% 🟢)	3.737s (+3.3%)	0.589s	17	2.52x
💻 Local	Express	3.452s (+12.4% 🔺)	4.030s (+5.0%)	0.000s (-37.8% 🟢)	4.032s (+4.9%)	0.580s	15	2.76x
💻 Local	Nitro	3.477s (+17.1% 🔺)	3.824s (+5.9% 🔺)	0.001s (+126.7% 🔺)	4.164s (+15.1% 🔺)	0.687s	15	2.78x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	6.510s (-5.1% 🟢)	7.689s (-5.8% 🟢)	0.000s (-100.0% 🟢)	8.170s (-5.8% 🟢)	1.660s	8	1.00x
▲ Vercel	Next.js (Turbopack)	7.085s (+7.1% 🔺)	8.313s (+6.9% 🔺)	0.000s (-100.0% 🟢)	8.717s (+6.3% 🔺)	1.632s	7	1.09x
▲ Vercel	Express	⚠️ missing	-	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World	🥇 Fastest Framework	Wins
💻 Local	Express	12/21
🐘 Postgres	Express	19/21
▲ Vercel	Nitro	16/21

Fastest World by Framework

Winner determined by most benchmark wins

Framework	🥇 Fastest World	Wins
Express	🐘 Postgres	16/21
Next.js (Turbopack)	🐘 Postgres	15/21
Nitro	🐘 Postgres	13/21

Column Definitions

Workflow Time: Runtime reported by workflow (completedAt - createdAt) - primary metric
TTFB: Time to First Byte - time from workflow start until first stream byte received (stream benchmarks only)
Slurp: Time from first byte to complete stream consumption (stream benchmarks only)
Wall Time: Total testbench time (trigger workflow + poll for result)
Overhead: Testbench overhead (Wall Time - Workflow Time)
Samples: Number of benchmark iterations run
vs Fastest: How much slower compared to the fastest configuration for this benchmark

Worlds:

💻 Local: In-memory filesystem world (local development)
🐘 Postgres: PostgreSQL database world (local development)
▲ Vercel: Vercel production/preview deployment
🌐 Turso: Community world (local development)
🌐 MongoDB: Community world (local development)
🌐 Redis: Community world (local development)
🌐 Jazz: Community world (local development)
🌐 Redis: Community world (local development)
🌐 Redis + BullMQ: Community world (local development)
🌐 Cloudflare: Community world (local development)
🌐 MySQL: Community world (local development)
🌐 Azure: Community world (local development)
🌐 NATS JetStream: Community world (local development)
🌐 Upstash: Community world (local development)

📋 View full workflow run

❌ Some benchmark jobs failed:

Local: success
Postgres: success
Vercel: failure

Check the workflow run for details.

github-actions · 2026-06-04T06:34:39Z

🧪 E2E Test Results

✅ All tests passed

Summary

	Passed	Skipped	Total
✅ ▲ Vercel Production	1266	219	1485
✅ 💻 Local Development	1671	219	1890
✅ 📦 Local Production	1671	219	1890
✅ 🐘 Local Postgres	1671	219	1890
✅ 🪟 Windows	135	0	135
✅ 📋 Other	769	176	945
Total	7183	1052	8235

Details by Category

✅ ▲ Vercel Production

App	Passed	Skipped
✅ astro	109	26
✅ example	109	26
✅ express	109	26
✅ fastify	109	26
✅ hono	109	26
✅ nextjs-turbopack	133	2
✅ nextjs-webpack	133	2
✅ nitro	109	26
✅ nuxt	109	26
✅ sveltekit	128	7
✅ vite	109	26

✅ 💻 Local Development

App	Passed	Skipped
✅ astro-stable	110	25
✅ express-stable	110	25
✅ fastify-stable	110	25
✅ hono-stable	110	25
✅ nextjs-turbopack-canary	116	19
✅ nextjs-turbopack-stable-lazy-discovery-disabled	135	0
✅ nextjs-turbopack-stable-lazy-discovery-enabled	135	0
✅ nextjs-webpack-canary	116	19
✅ nextjs-webpack-stable-lazy-discovery-disabled	135	0
✅ nextjs-webpack-stable-lazy-discovery-enabled	135	0
✅ nitro-stable	110	25
✅ nuxt-stable	110	25
✅ sveltekit-stable	129	6
✅ vite-stable	110	25

✅ 📦 Local Production

App	Passed	Skipped
✅ astro-stable	110	25
✅ express-stable	110	25
✅ fastify-stable	110	25
✅ hono-stable	110	25
✅ nextjs-turbopack-canary	116	19
✅ nextjs-turbopack-stable-lazy-discovery-disabled	135	0
✅ nextjs-turbopack-stable-lazy-discovery-enabled	135	0
✅ nextjs-webpack-canary	116	19
✅ nextjs-webpack-stable-lazy-discovery-disabled	135	0
✅ nextjs-webpack-stable-lazy-discovery-enabled	135	0
✅ nitro-stable	110	25
✅ nuxt-stable	110	25
✅ sveltekit-stable	129	6
✅ vite-stable	110	25

✅ 🐘 Local Postgres

App	Passed	Skipped
✅ astro-stable	110	25
✅ express-stable	110	25
✅ fastify-stable	110	25
✅ hono-stable	110	25
✅ nextjs-turbopack-canary	116	19
✅ nextjs-turbopack-stable-lazy-discovery-disabled	135	0
✅ nextjs-turbopack-stable-lazy-discovery-enabled	135	0
✅ nextjs-webpack-canary	116	19
✅ nextjs-webpack-stable-lazy-discovery-disabled	135	0
✅ nextjs-webpack-stable-lazy-discovery-enabled	135	0
✅ nitro-stable	110	25
✅ nuxt-stable	110	25
✅ sveltekit-stable	129	6
✅ vite-stable	110	25

✅ 🪟 Windows

App	Passed	Failed	Skipped
✅ nextjs-turbopack	135	0	0

✅ 📋 Other

App	Passed	Skipped
✅ e2e-local-dev-nest-stable	110	25
✅ e2e-local-dev-tanstack-start-	110	25
✅ e2e-local-postgres-nest-stable	110	25
✅ e2e-local-postgres-tanstack-start-	110	25
✅ e2e-local-prod-nest-stable	110	25
✅ e2e-local-prod-tanstack-start-	110	25
✅ e2e-vercel-prod-tanstack-start	109	26

📋 View full workflow run

fix: wait for aborted parallel steps to settle

8ea3699

vercel Bot deployed to Preview – workbench-express-workflow June 4, 2026 06:34 View deployment

vercel Bot deployed to Preview – workbench-nitro-workflow June 4, 2026 06:34 View deployment

vercel Bot deployed to Preview – workflow-tarballs June 4, 2026 06:34 View deployment

vercel Bot deployed to Preview – workbench-hono-workflow June 4, 2026 06:34 View deployment

vercel Bot deployed to Preview – workbench-fastify-workflow June 4, 2026 06:34 View deployment

vercel Bot deployed to Preview – workbench-astro-workflow June 4, 2026 06:34 View deployment

vercel Bot deployed to Preview – workbench-vite-workflow June 4, 2026 06:34 View deployment

vercel Bot deployed to Preview – workbench-tanstack-start-workflow June 4, 2026 06:34 View deployment

vercel Bot deployed to Preview – example-workflow June 4, 2026 06:34 View deployment

vercel Bot deployed to Preview – workbench-sveltekit-workflow June 4, 2026 06:34 View deployment

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vercel Bot deployed to Preview – example-nextjs-workflow-webpack June 4, 2026 06:35 View deployment

vercel Bot deployed to Preview – workflow-swc-playground June 4, 2026 06:37 View deployment

Conversation

pranaygp commented Jun 4, 2026

Summary

Validation

Notes

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📊 Benchmark Results

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

Summary

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🧪 E2E Test Results

Summary

Details by Category

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Reviewers

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Labels

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Milestone

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