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[Node.js] 问一个关于 nodejs CPU 核心利用的问题

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经常被问到 nodejs 写的程序 cpu 利用率的问题

例如建立一个 TCP Server ,做一些数据处理,简单 demo 大约像下面这样。

问题:假设服务器是 4 核

  • 在没有使用 pm2 等第三方模块情况下直接启动,最多用到了几个核?
  • 是否要显式的使用 cluster 模块,才真正用到多核 ?
const net = require('net')

const server = net.createServer()

server.on('connection', (socket) => {
  socket.on('data', (data) => {
    // 这里做一些任务处理
  })
})

server.listen(3000, '0.0.0.0')

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