Unix® System Management Primer Plus

Chapter 11

1:	What does the following uptime output tell you about the trend of processor activity on a system in the last 15 minutes? 9:00am up 143 day(s), 10:00, 0 users, load average: 0.45, 3.96, 5.43
A1:	There was significant processing load on the machine in the past 15 minutes, but it has subsided within the past 5 minutes.
2:	What is the difference between user and system time on a processor?
A2:	User time is the time a processor spends executing code in user processes, while system time is the time spent executing kernel code.
3:	What is a multithreaded process? Why would you want to make a process multithreaded?
A3:	A multithreaded process contains multiple “threads of execution” in which different parts of the same process can execute simultaneously. ...