elastic-apm-node/lib/metrics/platforms/generic/process-cpu.js

The official Elastic APM agent for Node.js

/*
 * Copyright Elasticsearch B.V. and other contributors where applicable.
 * Licensed under the BSD 2-Clause License; you may not use this file except in
 * compliance with the BSD 2-Clause License.
 */

'use strict';

const os = require('os');

const processTop = require('./process-top')();

const cpus = os.cpus();

module.exports = function processCPUUsage() {
  const cpu = processTop.cpu();
  return {
    total: cpu.percent / cpus.length,
    user: cpu.user / cpu.time / cpus.length,
    system: cpu.system / cpu.time / cpus.length,
  };
};