lagmeter  - small utility for scheduling lag measurement

	More or less POSIX portable, but tested only under Linux.

	Copyright terms: GNU GPL v3 or newer.

	It does a microsecond sleeping loop on every cpu. When you hit
	Ctrl-c then it will terminate and print out the lag max/min/avg.

	Compile it with:

		gcc -O3 -lpthread -o lagmeter lagmeter.c

	Usage:
		best case lag:
									    		
			lagmeter
			.
			.
			Ctrl-c

		worst case lag:

			lagmeter -a
			.
			.
			Ctrl-c