每一个服务器都具有磁盘存储和一个或多个附带内存的中央处理单元。
Each server has disk storage and one or more central processing units with memory.
作为一个简单的方法，查看一下Web服务器上的中央处理单元(CPU)使用率，就可以了解CPU是否负载过重。
As a simple example, by watching central processing unit (CPU) usage on a Web server, you can see when it is overloaded.
通常，不同的中央处理单元 (CPU) 和操作环境以不同的方式存储浮点数，简单地比较期望值和实际值是无效的。
Typically, different central processing units (CPUs) and operating environments store floating points differently and simple comparisons between expected and actual values don't work.
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