/*
 * 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 "sched Provider" Chapter.
 *
 * The full text of the this chapter may be found here:
 *
 *   http://docs.oracle.com/cd/E36784_01/html/E36846/sched-provider.html
 *
 * On machines that have DTrace installed, this script is available as
 * whererun.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

dtrace:::BEGIN
{
	start = timestamp;
}

sched:::on-cpu
/execname == $$1/
{
	self->ts = timestamp;
}

sched:::off-cpu
/self->ts/
{
	@[cpu] = sum(timestamp - self->ts);
	self->ts = 0;
}

profile:::tick-1sec
/++x == 10/
{
	exit(0);
}
        
dtrace:::END
{
	printf("CPU distribution over %d seconds:\n\n",
	    (timestamp - start) / 1000000000);
	printf("CPU microseconds\n--- ------------\n");
	normalize(@, 1000);
	printa("%3d %@d\n", @);
}