Which priority has the process?how do u view?
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Answer Posted / ajit mohan b
Each process has a niceness value associated with it, which
is what the kernel uses to determine which processes require
more processor time than others. The higher the nice value,
the lower the priority of the process. In other words, the
“nicer” the program, the less CPU it will try to take from
other processes; programs that are less nice tend to demand
more CPU time than other programs that are nicer.
The priority is noted by a range of -20 (the highest) to 20
(the lowest). Using ps, you can see the current nice value
of all programs:
# ps axl
F UID PID PPID PRI NI VSZ RSS WCHAN STAT TTY
TIME COMMAND
4 0 1 0 16 0 2648 112 - S ?
0:01 init [3]
1 0 2 1 34 19 0 0 ksofti SN ?
0:02 [ksoftirqd/0]
5 0 3 1 10 -5 0 0 worker S< ?
0:00 [events/0]
You can see that init has a nice value of 0, while other
kernel tasks associated with PID 2 and 3 have a nice value
of 19 and -5 respectively.
Typically, a program inherits its nice value from its
parent; this prevents low priority processes from spawning
high priority children.
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