Context switching is how the computer's operating system multitasks different processes. It lets one process run for a while and then saves a copy of the process' run state (such as register values) off to the side, restores the run state of the next process back into the processor, and runs it for a while. Context switching is this process of swapping one program out of the CPU and replacing it with another process.
explain what context switching mode is. and can a PC run in context switching mode
Switching is typically used in the context of switching phone lines or switching digital networks. It could also be used in the context of switching companies that provide services such as water or electric.
It has been suggested that process switching and thread switching be merged into this article or section. (Discuss) Proposed since April 2012.
Context means ,in terms of computers, the status of various general purpose registers having some process specific data values and even some other structures dependent on computer hardware,i.e. PCB etc. Now what context switch means ,""switching from one status of registers set to another status of registers set."" This context may be of a process or thread etc. Now when we are talking about any type of context switching,,it means we are requesting the KERNEL to save the current context anywhere,and fetch the next context for us.. It requires a mode switch between user mode to kernel mode, so that required switching may be performed in right order.... Isn't it simple ,,or what.
If the process that gets the control can be put into the register (its kept in cache though) means less time to fetch and have a context switch. Any way the context switching time isn't a big time delay.
Context switching allows for a computer to multitask. It can suspend one process in order to switch over and run another process. The first process can be brought back up by suspending the second one.
packet switching circuit switching message switching
There are three type of switching system such as circuit switching ,packet switching , massage switching.
packet switching is use today
Context switching between kernel threads typically requires saving the value of the CPU registers from the thread being switched out and restoring the CPU registers of the new thread being scheduled.
switching losses
1. circuit switching 2. packet switching