Out:  Friday January 10
In:  Friday January 17

Topic:  Processes, scheduling and lightweight threads.

Silberschatz:  read chapters 4 (skip 4.6), 5, and 6.

Problems:

1.  What is the biggest performance cost in context switching?

2.  What hardware/architecture support would you need to
make context switching "free"?   Explain how this support
would be used by the OS.

3.  What resources are required to create a process?  

4.  What resources are required to create a thread?  Why or how is
this different than process creation?

5.  What's the advantage of including kernel threads as well
as processes?  

6.  do problem 6.8