nice & renice

Question 1

nice

Answer 1

Run COMMAND with an adjusted niceness, which affects process scheduling.

Niceness values range from -20 (most favorable to the process) to 19 (least favorable to the process).

Question 2

nice -n

Answer 2

nice -n, –adjustment=N

Add integer N to the niceness (default 10)

Question 3

renice

Answer 3

renice alters the scheduling priority of one or more running processes.

Question 4

renice

• n
• g
• p
• u

Answer 4

• n, –priority priority, Specify the schedule priority to be used for the process, process group, or user.
• g, –pgrp, Interpret the succeeding arguments as process group IDs.
• p, –pid, Interpret the succeeding arguments as process IDs (the default).
• u, –user, Interpret the succeeding arguments as usernames or UIDs.