The priority is a float between 0 and 1 that indicates the relative priority for the forked process, where 0 is
very low priority, 1 is very high priority, and 0.5 is considered a "normal" priority. The value is based on the
forked process's "nice" value. The priority affects the operating system's scheduling of processes. How much the
priority actually affects the amount of CPU time the process gets is ultimately system-specific.