xref: /illumos-gate/usr/src/cmd/dtrace/test/tst/common/rates/tst.aggrate.d (revision 7a6d80f1660abd4755c68cbd094d4a914681d26e)
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 2006 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 /*
28  * ASSERTION:
29  *   If the aggregation rate is set properly, there should be no aggregation
30  *   drops.
31  *
32  * SECTION: Aggregations/Minimizing drops;
33  *	Options and Tunables/aggrate;
34  *	Options and Tunables/aggsize
35  */
36 
37 /*
38  * We rely on the fact that at least 30 bytes must be stored per aggregation
39  * iteration, but that no more than 300 bytes are stored per iteration.
40  * We are going to let this run for ten seconds.  If the aggregation rate
41  * is being set properly, there should be no aggregation drops.  Note that
42  * this test (regrettably) may be scheduling sensitive -- but it should only
43  * fail on the most pathological systems.
44  */
45 #pragma D option aggsize=300
46 #pragma D option aggrate=10msec
47 #pragma D option quiet
48 
49 int n;
50 
51 tick-100msec
52 /n < 100/
53 {
54 	@a[n++] = sum(n);
55 }
56 
57 tick-100msec
58 /n == 100/
59 {
60 	exit(0);
61 }
62 
63 END
64 {
65 	printa("%10d\n", @a);
66 }
67