How to get a thread dump of a running Node.js process?

You can accomplish the same using heapdump tool. I found the below article of the same which is below (It also works for me):

https://medium.com/better-programming/make-a-dump-of-the-v8-heap-and-inspect-for-your-node-app-b69f7b68c162

On this thread you have an idea using:

# node --debug-brk buggy.js Debugger listening on port 5858

In another terminal:

connecting to 127.0.0.1:5858 ... ok
break in buggy.js:16
 14 }
 15 
>16 z();
 17 
 18 });
debug> cont```

(wait for the node process to start using 100% CPU)

```debug> step
break in buggy.js:3
  1 function x() {
  2     var i = 0;
> 3     while(1) {
  4             i++;
  5     }
debug> bt
#0 buggy.js:3:8
#1 buggy.js:9:2
#2 buggy.js:13:2
#3 buggy.js:16:1```

Source:
https://github.com/nodejs/node-v0.x-archive/issues/25263

Node has fully loaded diagnostics that tricks like above (if I understood correctly) would be redundant but feel free to correct me.

Must Read: Awesome blogs by NodeSource 1 2 3

I'll try to list down all the tools that I found useful:

• Diagnostic Reports

• v8 profiler

• Flame Graphs

• why-is-node-running

• trace

• clarify

Others (Just googled them.)

• N|Solid by NodeSource
• Autopsy
• StackImpact