Exercise

Measurement exercises are small exercises where you write code to run on a real machine, in order to measure some aspect of OS or hardware performance. The idea behind such exercises is to give you a little bit of hands-on experience with a real operating system.

In this exercise, you’ll measure the costs of a system call and context switch.

Measuring the cost of a system call is relatively easy. For example, you could repeatedly call a simple system call (e.g., performing a 0-byte read), and time how long it takes; dividing the time by the number of ...