What is the Linux CPU Load

The load average represents the average system load over a period of time. It conventionally appears in the form of three numbers which represent the system load during the last one-, five-, and fifteen-minute periods. https://en.wikipedia.org/wiki/Load_(computing)

按照网上看到的一种很形象的说法,假设我们的系统是单 CPU 单内核的,把它比喻成是一条单向马路,把任务比作汽车。

  • 当车不多的时候,load <1;
  • 当车占满整个马路的时候, load=1;
  • 当马路都站满了,而且马路外还堆满了汽车的时候,load>1

搜索了几篇文字说明,已经很清楚了:

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