All 5 Turbopack & Build Performance questions
More in Turbopack & Build Performance
What is Turbopack, and how does it improve the Next.js development experience? How does Turbopack achieve faster build and refresh times compared to older bundling tools? What should you do if a specific loader or plugin your project relies on is not yet fully supported by Turbopack? What broader build performance optimizations, beyond just switching bundlers, can help speed up a large Next.js project's build times?
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Next.js › Turbopack & Build Performance

How would you measure and compare build performance before and after adopting Turbopack for a large existing Next.js project?

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Answer

You would time your typical development workflows, such as cold server startup and the delay after saving a file until changes appear in the browser, running the same measurements with both the old and new bundler on the same project, and comparing the actual numbers to make an informed decision rather than relying on general claims.
# Measure cold start time
time next dev

# Measure with Turbopack
time next dev --turbo
Real-world example A large engineering team benchmarks their actual development server startup times before and after adopting Turbopack, finding a significant measurable improvement that justifies the switch for their whole team.

Common follow-ups: What other metrics besides startup time are worth measuring when evaluating a bundler switch?;How do build performance improvements affect overall developer productivity?

Web Vitals & Performance Monitoring;Bundle Analysis & Code Splitting
All 5 Turbopack & Build Performance questions