[consumption] process niceness extension

[ramunasd]

With PHP it is doable with just one line:

proc_nice($priority);

Where priority is integer from -20 to 19, but only values from 0 onwards is allowed without root permissions. Default is 0.

http://php.net/manual/en/function.proc-nice.php

Would be very usefull for environments with limited CPU power and where (in terms of CPU time) some consumers must overcome other not so important processes.

[makasim]

Would you like to submit PR?

[ramunasd]

it's on my todo list :)