Context-switch time is overhead; the system does no useful work while switching.
上下文切换的时间开销较重；在切换时，系统没有做有用的工作。
Processes in Erlang are assumed to be small in memory, fast to start, and fast to context-switch.
Erlang中的进程内存较小，可快速启动和进行上下文切换。
The hardness of this approach depends mostly on the CPU interrupt structure and context-switch hardware support.
这种方法的硬度主要取决于CPU中断结构和环境转换的硬件支持。
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。
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。
This paper studies the interrupt latency and context-switch time of embedded real-time operating system, and about the interrupt latency a non-maskable interrupt idea is put forward.
本文分析了嵌入式实时操作系统的两个重要的性能指标任务切换时间和中断延时及对实时控制的影响，并针对中断延时提出非屏蔽中断的改进方法。
To execute these instructions, you need to switch to the kernel context.
要执行这些指令，您必须切换到内核上下文。
This example shows how to enable a trusted context and switch the user ID in an xa application environment.
这个例子展示如何在XA应用程序环境中启用一个受信任上下文和切换用户ID。
Internally, a context switch is performed between these two kernels, but this can be done quite fast.
两个内核之间在内部执行上下文切换，但这可以非常快速地完成。
This gives them context, and it shortens the time necessary to switch from one task to another.
这赋予他们一定的背景，并缩短了从一项任务转向另一项任务所需要的时间。
If not, all resources are used in the virtual processor, saving all of them from a virtual processor context switch.
如果不这样做的话，就需要在虚拟处理器上下文切换的过程中保存该虚拟处理器中使用的所有资源。
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。
Some amount of work is done to determine what event occurred and, after a small amount of work, the required task is dispatched to deal with the event (a context switch).
执行一些工作以确定发生了什么事件，然后执行少量工作分配必需的任务以处理此事件(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。
The return from the call causes another context switch from kernel back to user mode.
该调用的返回引发了内核模式到用户模式的上下文切换(又一次上下文切换)。
This requires a context switch to the kernel thread to handle the task of moving data to and from disk.
这要求上下文切换到内核线程，以处理将数据移动到磁盘以及从磁盘移出数据的任务。
The return from the call caused a context switch from kernel back to user mode.
该调用的返回引发了内核模式到用户模式的上下文切换(又一次上下文切换)。
There is an important context switch that deserves a little more attention.
有一个重要的环境转变值得注意。
This will let you maintain perspective, work in context without having to constantly switch apps looking for the information you need to complete your work.
这样一来你就能保持观点把握来龙去脉而不必来回调换程序寻找完成工作需要的信息了。
Operating systems can generally switch (context switching) faster between threads of the same process than between different process.
操作系统通常可以在相同进程中的不同线程之间更快速地切换(上下文切换)，而不是在不同进程之间切换。
Besides, having to switch context to access each of these products, with different login identities on SourceForge and Rally, we encountered a clash.
此外，必须切换环境来访问每一个产品，在SourceForge和Rally上用不同的登录身份，这令我们遇到了冲突。
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。
The send socket call causes a context switch from user mode to kernel mode.
send套接字调用引发了从用户模式到内核模式的上下文切换。
JRuby can switch context at almost any time.
JRuby几乎可以随时切换上下文。
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。
Step one: the read system call causes a context switch from user mode to kernel mode.
read() 调用（参见 图 2）引发了一次从用户模式到内核模式的上下文切换。
Step four: the write system call returns, creating our fourth context switch.
步骤四：系统调用返回，导致了第4次上下文切换。
Step three: the write system call causes a context switch from user mode to kernel mode.
send() 套接字调用引发了从用户模式到内核模式的上下文切换。
The read call causes a context switch (see Figure 2) from user mode to kernel mode.
read调用(参见图2)引发了一次从用户模式到内核模式的上下文切换。
The send system call returns, creating the fourth context switch.
send系统调用返回，结果导致了第四次的上下文切换。
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