It is true that in most cases the response times required are fast, but speed is not what defines a real-timesystem.
在大多数情况下,实时系统的确需要很快的响应速度,但是仅有“速度”是不足以定义实时系统的。
3
An operating system that can support the desired deadlines of the real-time tasks (even under worst-case processing loads) is called a hard real-timesystem.