3.4 The Sun UltraSPARC processor has multiple register sets. Describe what happens when a context switch occurs if the new context is already loaded into one of the register sets. What happens if the new context is in memory rather than in a register
16.2 How would you measure the time spent in a context switch? 上下文转换发生在两个进程之间,比如让一个等待进程进入执行和让一个运行进程进入等待,这些在多任务中发生.操作系统需要把等待进程的信息放入内存和把当前运行的进程信息保存下来.为了解决这个问题,我们记录在切换进程时的最后和第一个指令的时间点,比如我们有两个进程P1和P2,P1在执行P2在等待,当我们切换P1和P2时,假设发生在P1的第N个指令,我们用tx,k来表示进程x的第k个
The context is represented in the PCB of the process. It includes the value of the CPU registers, the process state (see Figure 3.2), and memory-management information. 上下文是保存在PCB里面的. 它包括了CPU寄存器的值, 进程状态, 和内存管理信息. Generically, we perform a state save
A context switch (also sometimes referred to as a process switch or a task switch) is the switching of the CPU (central processing unit) from one process or thread to another. A process (also sometimes referred to as a task) is an executing (i.e., ru
How many Context Switches is “normal”? This depends very much on the type of application you run. If you've got applications which are very trigger-happy WRT syscalls you can expect to see high amounts of context switching. If most of your applicatio
如何测试sql语句执行时间 在MSSQL Server中通过查看SQL语句执行所用的时间,来衡量SQL语句的性能. set statistics profile on set statistics io on set statistics time on 你执行的SQL语句 go set statistics profile off set statistics io off set statistics time off 执行完后点消息即可.补充说明:set statistics io检查查询
In computing, a context switch is the process of storing and restoring the state (more specifically, the execution context) of a process or thread so that execution can be resumed from the same point at a later time. This enables multiple processes t
How long does it take to make a context switch? FROM: http://blog.tsunanet.net/2010/11/how-long-does-it-take-to-make-context.html That's a interesting question I'm willing to spend some of my time on. Someone at StumbleUpon emitted the hypothesis t
FROM: http://blog.tsunanet.net/2010/11/how-long-does-it-take-to-make-context.html That's a interesting question I'm willing to spend some of my time on. Someone at StumbleUpon emitted the hypothesis that with all the improvements in the Nehalem archi
在Nuget引用 Castle.DynamicProxy 和 Newtonsoft.Json 这个 原文:http://www.cnblogs.com/RicCC/archive/2010/03/15/castle-dynamic-proxy.html 代码: using Castle.Core.Interceptor; using Castle.DynamicProxy; using ConsoleApplication1.test; using Newtonsoft.Json; using
在Nuget引用 Castle.DynamicProxy 和 Newtonsoft.Json 这个 原文:http://www.cnblogs.com/RicCC/archive/2010/03/15/castle-dynamic-proxy.html 代码: using Castle.Core.Interceptor; using Castle.DynamicProxy; using ConsoleApplication1.test; using System; using System.Co