What do you mean by nice value?

Answer Posted / mudassar

Nice value is the value that controls {increments or decrements}
the priority of the process. This value that is returned by
the
nice () system call. The equation for using nice value is:
Priority = (“recent CPU usage”/constant) + (base- priority)
+ (nice value)
Only the administrator can supply the nice value.
The nice () system call works for the running process only.
Nice value of one process cannot affect the nice value of
the other process.

============================================================================

nice: Unix processes have an associated system nice value
which is used by the kernel to determine when it should be
scheduled to run. This value can be increased to facilitate
processes executing quickly or decreased so that the processes
execute slowly and thus do not interfere with other system
activities.

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