code: function getFullLoad() {
  
    return new Promise((resolve) => {
      process.nextTick(() => {
  
        const cpus = os.cpus();
        let totalUser = 0;
        let totalSystem = 0;
        let totalNice = 0;
        let totalIrq = 0;
        let totalIdle = 0;
  
        for (let i = 0, len = cpus.length; i < len; i++) {
          const cpu = cpus[i].times;
          totalUser += cpu.user;
          totalSystem += cpu.sys;
          totalNice += cpu.nice;
          totalIrq += cpu.irq;
          totalIdle += cpu.idle;
        }
        let totalTicks = totalIdle + totalIrq + totalNice + totalSystem + totalUser;
        let result = (totalTicks - totalIdle) / totalTicks * 100.0;
  
        resolve(result);
      });
    });
  }
docs: -------------------------- PS - full load since bootup