Since these processes already exist, there's no need for the operating system to waste valuable time to create a process, allocate memory to it, and so on.
由于这些进程已经存在，因此操作系统不需要浪费宝贵的时间来创建进程、为之分配内存等等。
The virtual console is used by the operating system as a console for various processes, such as installations, recovery from crashes, and performing boot-related operations.
操作系统可以使用虚拟控制台作为各种处理工作(如安装工作、对崩溃故障进行的恢复工作，以及执行启动相关的操作)的控制台。
But unlike regular processes, KVM guests contain a nested operating system, which impacts memory overcommitment in two key ways.
但与常规进程不同的是，KVM客户包含一套内嵌的操作系统，它以两种关键方式影响内存超量使用。
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