context-switch的意思|示意

Each processor on the CPU has its own CSA (current save area) pointer that points to the MST that is to be used when a thread or interrupt handler is interrupted or swapped due to context switch.

CPU上的每个处理器都拥有自己的CSA(当前保存区)指针，指向当线程或中断处理程序由于上下文切换而被中断或交换时使用的MST。

His motivation in working on the new scheduler was to create a completely o (1) scheduler for wakeup, context-switch, and timer interrupt overhead.

他编写这个新调度器的动机是为唤醒、上下文切换和定时器中断开销建立一个完全o(1)的调度器。

To minimize the cost of a virtual processor context switch, the operating system indicates to the hypervisor whether some resources are in use.

为了实现虚拟处理器上下文切换成本的最小化，操作系统将告诉Hypervisor是否正在使用某些资源。

An essential part of any multitasking operating system, the kernel contains just the scheduler and context-switch routine.

任何多任务操作系统的本质部分，内核仅仅包含调度程序和上下文切换进程。

Step two: data is copied from the kernel buffer into the user buffer, and the read system call returns. The return from the call caused a context switch from kernel back to user mode.

步骤二：数据从内核空间缓冲区复制到用户空间缓冲区，之后系统调用read返回，这导致了从内核空间向用户空间的上下文切换。

This causes what is known as a context switch from "user space" to "kernel space," although that's just for you information.

这就引起所谓的从“用户空间”到“内核空间”的上下文切换，不过这仅供了解之用。