/*
 * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 *
 * This D script is used as an example in the Solaris Dynamic Tracing Guide
 * wiki in the "Aggregations" Chapter.
 *
 * The full text of the this chapter may be found here:
 *
 *   http://docs.oracle.com/cd/E36784_01/html/E36846/gkwuw.html#scrolltoc
 *
 * On machines that have DTrace installed, this script is available as
 * normalize.d in /usr/demo/dtrace, a directory that contains all D scripts
 * used in the Solaris Dynamic Tracing Guide.  A table of the scripts and their
 * corresponding chapters may be found here:
 *
 *   file:///usr/demo/dtrace/index.html
 */

#pragma D option quiet

BEGIN
{
	/*
	 * Get the start time, in nanoseconds.
	 */
	start = timestamp;
}

syscall:::entry
{
	@func[execname] = count();
}

END
{
	/*
	 * Normalize the aggregation based on the number of seconds we have
	 * been running.  (There are 1,000,000,000 nanoseconds in one second.)
	 */	
	normalize(@func, (timestamp - start) / 1000000000);
}