os.cpus()


os.cpus() 方法返回一个对象数组,包含每个逻辑 CPU 内核的信息。

下面的属性包含在每个对象中:

  • model <string>
  • speed <number> 以兆赫兹为单位。
  • times <Object>

    • user <number> CPU 花费在用户模式下的毫秒时间数。
    • nice <number> CPU 花费在良好模式下的毫秒时间数。
    • sys <number> CPU 花费在系统模式下的毫秒时间数。
    • idle <number> CPU 花费在空闲模式下的毫秒时间数。
    • irq <number> CPU 花费在中断请求模式下的毫秒时间数。
[
  {
    model: 'Intel(R) Core(TM) i7 CPU         860  @ 2.80GHz',
    speed: 2926,
    times: {
      user: 252020,
      nice: 0,
      sys: 30340,
      idle: 1070356870,
      irq: 0
    }
  },
  {
    model: 'Intel(R) Core(TM) i7 CPU         860  @ 2.80GHz',
    speed: 2926,
    times: {
      user: 306960,
      nice: 0,
      sys: 26980,
      idle: 1071569080,
      irq: 0
    }
  },
  {
    model: 'Intel(R) Core(TM) i7 CPU         860  @ 2.80GHz',
    speed: 2926,
    times: {
      user: 248450,
      nice: 0,
      sys: 21750,
      idle: 1070919370,
      irq: 0
    }
  },
  {
    model: 'Intel(R) Core(TM) i7 CPU         860  @ 2.80GHz',
    speed: 2926,
    times: {
      user: 256880,
      nice: 0,
      sys: 19430,
      idle: 1070905480,
      irq: 20
    }
  },
  {
    model: 'Intel(R) Core(TM) i7 CPU         860  @ 2.80GHz',
    speed: 2926,
    times: {
      user: 511580,
      nice: 20,
      sys: 40900,
      idle: 1070842510,
      irq: 0
    }
  },
  {
    model: 'Intel(R) Core(TM) i7 CPU         860  @ 2.80GHz',
    speed: 2926,
    times: {
      user: 291660,
      nice: 0,
      sys: 34360,
      idle: 1070888000,
      irq: 10
    }
  },
  {
    model: 'Intel(R) Core(TM) i7 CPU         860  @ 2.80GHz',
    speed: 2926,
    times: {
      user: 308260,
      nice: 0,
      sys: 55410,
      idle: 1071129970,
      irq: 880
    }
  },
  {
    model: 'Intel(R) Core(TM) i7 CPU         860  @ 2.80GHz',
    speed: 2926,
    times: {
      user: 266450,
      nice: 1480,
      sys: 34920,
      idle: 1072572010,
      irq: 30
    }
  }
]

因为 nice 的值是 UNIX 相关的,在 Windows 系统上所有处理器的 nice 值总是 0。

The os.cpus() method returns an array of objects containing information about each logical CPU core.

The properties included on each object include:

  • model <string>
  • speed <number> (in MHz)
  • times <Object>

    • user <number> The number of milliseconds the CPU has spent in user mode.
    • nice <number> The number of milliseconds the CPU has spent in nice mode.
    • sys <number> The number of milliseconds the CPU has spent in sys mode.
    • idle <number> The number of milliseconds the CPU has spent in idle mode.
    • irq <number> The number of milliseconds the CPU has spent in irq mode.
[
  {
    model: 'Intel(R) Core(TM) i7 CPU         860  @ 2.80GHz',
    speed: 2926,
    times: {
      user: 252020,
      nice: 0,
      sys: 30340,
      idle: 1070356870,
      irq: 0
    }
  },
  {
    model: 'Intel(R) Core(TM) i7 CPU         860  @ 2.80GHz',
    speed: 2926,
    times: {
      user: 306960,
      nice: 0,
      sys: 26980,
      idle: 1071569080,
      irq: 0
    }
  },
  {
    model: 'Intel(R) Core(TM) i7 CPU         860  @ 2.80GHz',
    speed: 2926,
    times: {
      user: 248450,
      nice: 0,
      sys: 21750,
      idle: 1070919370,
      irq: 0
    }
  },
  {
    model: 'Intel(R) Core(TM) i7 CPU         860  @ 2.80GHz',
    speed: 2926,
    times: {
      user: 256880,
      nice: 0,
      sys: 19430,
      idle: 1070905480,
      irq: 20
    }
  },
  {
    model: 'Intel(R) Core(TM) i7 CPU         860  @ 2.80GHz',
    speed: 2926,
    times: {
      user: 511580,
      nice: 20,
      sys: 40900,
      idle: 1070842510,
      irq: 0
    }
  },
  {
    model: 'Intel(R) Core(TM) i7 CPU         860  @ 2.80GHz',
    speed: 2926,
    times: {
      user: 291660,
      nice: 0,
      sys: 34360,
      idle: 1070888000,
      irq: 10
    }
  },
  {
    model: 'Intel(R) Core(TM) i7 CPU         860  @ 2.80GHz',
    speed: 2926,
    times: {
      user: 308260,
      nice: 0,
      sys: 55410,
      idle: 1071129970,
      irq: 880
    }
  },
  {
    model: 'Intel(R) Core(TM) i7 CPU         860  @ 2.80GHz',
    speed: 2926,
    times: {
      user: 266450,
      nice: 1480,
      sys: 34920,
      idle: 1072572010,
      irq: 30
    }
  }
]

Because nice values are Unix-specific, on Windows the nice values of all processors are always 0.