node.js - configuration max old space size in Nodejs

Question

Im a newbie in nodejs and mongodb. I have a problem when i read about 100000 records from my mongodb in nodejs application. When I try to get 100000 records, I got this error:

FATAL ERROR: CALL_AND_RETRY_LAST Allocation failed - process out of memory

I search google and everyone said that configure max old space size parameter because v8 engine have about 1,9Gb heap memmory.

My point is, I run my app by eclispe, and i dont know how to configure max-old-space-size parameter.

Can anybody give a hint?

Thank you so much!

ps: my english is bad so if you cannot understand my question, it's fine.

Answer 1

Use node --max_old_space_size=5000 yourapp.js to allow 5000 mb. Look in your eclipse launch settings for command-line parameters, where you can add this.

However, as the comments say, you should reconsider loading this into memory, and stream it to the client instead.