How to limit cpu usage with Nodejs?

I want to introduce the node-cpulimit in this post.When i use puppeteer ,some page cost a long time in page loading. At the same time , the cpu limit will increase instantly.So i want to find some tools to help limit the cpu usage.

A very simple example to use cpulimit and childprocess

const limiter = require('cpulimit');


// Run command
const { spawn } = require('child_process');
const node = spawn('node', ['/root/puppeteer.js']);



// Run cpulimit
const options = {
  limit: 50, // or any other value
  includeChildren: true,
  pid: node.pid
};

limiter.createProcessFamily(options, (err, processFamily) => {
  if (err) {
    console.error('Error:', err.message);
    return;
  }

  limiter.limit(processFamily, options, (err) => {
    if (err) {
      console.error('Error:', err.message);
    } else {
      console.log('Done.');
    }
  });
});

for more detail pls visit

https://github.com/vangelov/node-cpulimit