Operating Systems: CPU Scheduling

Abraham Silberschatz, Greg Gagne, and Peter Baer Galvin, “Operating System Concepts, Ninth Edition “, Chapter Almost all programs have some alternating cycle of CPU number crunching and waiting for I/O of some kind. ( Even a simple fetch from memory takes a long time relative to CPU speeds. ) In a simple system running a single process, the time spent waiting for I/O is wasted, and those CPU cycles are lost forever.

Link: Operating Systems: CPU Scheduling
via http://www.cs.uic.edu

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

%d bloggers like this: