What is the context switching time?

Question

I have a doubt in context switching. In multi threading, when the context switching occurs, what will be the time between two context switches? Is it fixed time interval?

Answer 1

It is really OS and situation dependent. You'll have to read about scheduling in general and about the specific threading technology you use: there is a nice list here .

When considering threads, the real wall-time intervals might change if other processes need CPU time, by that taking time from the process running the threads.

That being said, there are some nice C code samples to measure that time .