[general] heavy computing etiquette

henry (06/02/82)

If you are doing big, long-running computations, you should make an
effort to be polite to other users of the system by using the "nice"
command.  For example, instead of

	% myprogram something
say
	% nice myprogram something

This will do exactly the same thing, except that it will run your
program at a lower priority than normal system activities, which will
tend to keep it out of other peoples' way.  It is courteous to other
users to do this, especially if you're doing your computing during the
day when system usage is heavy.

If you want to be VERY polite to other people, doing the following will
arrange that your program uses system resources only when nobody else
wants them:

	% nice -20 myprogram something

Under either of these, your program will run somewhat more slowly, but
if it is running for hours anyway this shouldn't be a serious problem.