Next.js v15.4.6 — Turbopack Consuming Excessive RAM, Any Optimization Tips?

[raihansharifrimon]

Hi everyone,

I’m working on a project using Next.js v15.4.6 with Turbopack for development.
The problem is that Turbopack is consuming an unusually large amount of RAM (See attachment image) — sometimes several gigabytes — even for a relatively small-to-medium codebase.

System Setup

• Next.js: 15.4.6
• Turbopack: Default dev server
• Node.js: v24.4.0
• OS: MacOS
• RAM: 16 GB

What I’ve Tried

• Restarting the dev server
• Clearing .next cache
• Closing background processes
• Reducing number of active dependencies

None of these have made a significant difference.

Questions

1. Are there known memory leaks or inefficiencies in Turbopack for this version?
2. Is there a recommended configuration or flag to reduce memory usage during development?

Any insights, suggestions, or optimization tips would be greatly appreciated.

Thanks in advance!

[icyJoseph]

I'd say go through this guide too https://nextjs.org/docs/app/guides/local-development