Ask HN: Running Node on Linux with RSS More Than 16 GB?

We have noticed that Node's spawn() is not asynchronous on Linux with memory RSS more than 16 GB, blocking the event loop for as much as 2 seconds. The issue comes down to Linux copying the entire RSS each time spawn() is called from the main event loop thread. Moving the call to uv_spawn() to the threadpool would likely fix the issue by not blocking the main event loop thread.

If you think you might be affected, there is a short script to reproduce here:

https://github.com/nodejs/node/issues/14917#issuecomment-323697188