os.cpus()

• 返回：<Object[]>

  ¥Returns: <Object[]>

返回包含有关每个逻辑 CPU 内核的信息的对象数组。如果没有可用的 CPU 信息，例如 /proc 文件系统不可用，则该数组将为空。

¥Returns an array of objects containing information about each logical CPU core. The array will be empty if no CPU information is available, such as if the /proc file system is unavailable.

每个对象上包含的属性包括：

¥The properties included on each object include:

• model <string>

• speed <number> （以兆赫为单位）

  ¥speed <number> (in MHz)

• times <Object>

  • user <number> CPU 在用户模式下花费的毫秒数。

    ¥user <number> The number of milliseconds the CPU has spent in user mode.

  • nice <number> CPU 在良好模式下花费的毫秒数。

    ¥nice <number> The number of milliseconds the CPU has spent in nice mode.

  • sys <number> CPU 在系统模式下花费的毫秒数。

    ¥sys <number> The number of milliseconds the CPU has spent in sys mode.

  • idle <number> CPU 在空闲模式下花费的毫秒数。

    ¥idle <number> The number of milliseconds the CPU has spent in idle mode.

  • irq <number> CPU 在中断请求模式下花费的毫秒数。

    ¥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,
    },
  },
] 拷贝

nice 值仅适用于 POSIX。在 Windows 上，所有处理器的 nice 值始终为 0。

¥nice values are POSIX-only. On Windows, the nice values of all processors are always 0.

os.cpus().length 不应用于计算应用可用的并行度。为此使用 os.availableParallelism()。

¥os.cpus().length should not be used to calculate the amount of parallelism available to an application. Use os.availableParallelism() for this purpose.