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      1 /*
      2  * CDDL HEADER START
      3  *
      4  * The contents of this file are subject to the terms of the
      5  * Common Development and Distribution License (the "License").
      6  * You may not use this file except in compliance with the License.
      7  *
      8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
      9  * or http://www.opensolaris.org/os/licensing.
     10  * See the License for the specific language governing permissions
     11  * and limitations under the License.
     12  *
     13  * When distributing Covered Code, include this CDDL HEADER in each
     14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     15  * If applicable, add the following below this CDDL HEADER, with the
     16  * fields enclosed by brackets "[]" replaced with your own identifying
     17  * information: Portions Copyright [yyyy] [name of copyright owner]
     18  *
     19  * CDDL HEADER END
     20  */
     21 
     22 /*
     23  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
     24  * Use is subject to license terms.
     25  */
     26 
     27 #pragma ident	"%Z%%M%	%I%	%E% SMI"
     28 
     29 /*
     30  * ASSERTION:
     31  *	Call stddev() at every fbt probe point.
     32  *
     33  * SECTION: Actions and Subroutines/stddev();
     34  *	Options and Tunables/bufsize;
     35  *	Options and Tunables/bufpolicy;
     36  *	Options and Tunables/statusrate
     37  */
     38 
     39 #pragma D option bufsize=1000
     40 #pragma D option bufpolicy=ring
     41 #pragma D option statusrate=10ms
     42 
     43 fbt:::
     44 {
     45 	@a = stddev(1);
     46 }
     47 
     48 tick-1sec
     49 /n++ == 10/
     50 {
     51 	exit(0);
     52 }
     53