1235368Sgnn#!/usr/sbin/dtrace -s
2/*
3 * rwbypid.d - read/write calls by PID.
4 *             Written using DTrace (Solaris 10 3/05)
5 *
6 * This script tracks the number of reads and writes at the syscall level
7 * by processes, printing the totals in a report. This matches reads
8 * and writes whether they succeed or not.
9 *
10 * $Id: rwbypid.d 3 2007-08-01 10:50:08Z brendan $
11 *
12 * USAGE:	rwbypid.d			# hit Ctrl-C to end sample
13 *
14 * FIELDS:
15 *		PID		process ID
16 *		CMD		process name
17 *		DIR		Read or Write
18 *		COUNT		total calls
19 *
20 * COPYRIGHT: Copyright (c) 2005, 2006 Brendan Gregg.
21 *
22 * CDDL HEADER START
23 *
24 *  The contents of this file are subject to the terms of the
25 *  Common Development and Distribution License, Version 1.0 only
26 *  (the "License").  You may not use this file except in compliance
27 *  with the License.
28 *
29 *  You can obtain a copy of the license at Docs/cddl1.txt
30 *  or http://www.opensolaris.org/os/licensing.
31 *  See the License for the specific language governing permissions
32 *  and limitations under the License.
33 *
34 * CDDL HEADER END
35 *
36 * 28-Jun-2005	Brendan Gregg	Created this.
37 * 20-Apr-2006	   "      "	Last update.
38 */
39
40#pragma D option quiet
41
42dtrace:::BEGIN
43{
44	printf("Tracing... Hit Ctrl-C to end.\n");
45}
46
47syscall::*read*:entry
48{
49	@calls[pid, execname, "R"] = sum(arg0);
50}
51
52syscall::*write*:entry
53{
54	@calls[pid, execname, "W"] = sum(arg0);
55}
56
57dtrace:::END
58{
59	printf("%6s %-24s %4s %8s\n", "PID", "CMD", "DIR", "COUNT");
60	printa("%6d %-24s %4s %@8d\n", @calls);
61}
62