Switching context between users for example , switching from admin - user to another user , and then back multiple times has performance implications 在用户间进行多次上下文切换例如，从admin用户切换到另一个用户，然后又切换回来会带来性能隐患。
Option to provide a means of reducing the system overhead associated with the excessive context switching sometimes seen in symmetric multiprocessing environments 选项可以减少有时在对称多处理( smp )环境下遇到的、与过多的上下文切换有关的系统开销。
Fixed processes are suitable only for system server processes such as the file server , window server etc . since the majority of context switches involve these processes 固化进程只适用于系统服务进程，例如文件服务，窗口服务等。因为绝大多数的上下文切换都包括了三个步骤。
Because for each process created , not only is just the tss descriptor used for maintaining context - switch context being loaded , but an ldt descriptor is being loaded too 因为对于所创建的每个进程，都不仅要加载一个tss描述符用来维护上下文切换的内容，另外还要加载一个ldt描述符。 ）
When excessive context switching is present , lightweight pooling can provide better throughput by performing the context switching inline , thus helping to reduce user kernel ring transitions 如果出现过多的上下文切换，轻型池可以通过上下文切换内联化，从而降低用户/内核环的转换频率，达到提高吞吐量的目的。
Variables , goto labels , temporary stored procedures , and temporary tables can be created when the connection context is associated with one database , and then referenced when the context has been switched to another database 当连接上下文与某个数据库相关时，可以创建变量、 goto标签、临时存储过程和临时表，且当已将上下文切换到其他数据库时引用它们。
The sql server database engine security functionality includes highly granular authentication , authorization , and validation mechanisms ; strong encryption ; security context switching and impersonation ; and integrated key management Sql server数据库引擎安全功能包括高粒度身份验证、授权和验证机制；增强加密；安全上下文切换和模拟以及集成的密钥管理。
One whose mix of computing , io , synchronization , and contention , as well as whose memory locality , allocation behavior , context switching , system calls , and inter - thread communication , approximates that of a real - world application 它的计算、 io 、同步和竞争，它的内存局部性、分配行为、上下文切换、系统调用以及线程间通信都必须与现实当中的应用程序近似。
However , " excellent " in this context is not " perfect , " since each time a process is context - switched it stops operating - which then results in throughput delays and performance degradation 但是，在执行上下文切换时，虽然现代操作系统表现很“出色” ，却并非“完美无缺” ，因为进程在每次进行上下文切换时，它都将停止运行这将导致吞吐量出现延迟（和性能下降） 。
