Node.js and V8 garbage collection

Here's what's I've read so far, and correct me if I'm wrong:

1. Node.js is based on V8 JavaScript engine.
2. V8 JavaScript engine implements stop-the-world garbage collection

Which..causes Node.js to sometimes completely shutdown for a few seconds to a few minutes to handle garbage collection.

If this is running for production code, that's a few seconds for 10,000 users.

Is this really acceptable in production environment?