1 #!/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,v 1.1.1.1 2015/09/30 22:01:09 christos Exp $ 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 42 dtrace:::BEGIN 43 { 44 printf("Tracing... Hit Ctrl-C to end.\n"); 45 } 46 47 syscall::*read*:entry 48 { 49 @calls[pid, execname, "R"] = sum(arg0); 50 } 51 52 syscall::*write*:entry 53 { 54 @calls[pid, execname, "W"] = sum(arg0); 55 } 56 57 dtrace:::END 58 { 59 printf("%6s %-24s %4s %8s\n", "PID", "CMD", "DIR", "COUNT"); 60 printa("%6d %-24s %4s %@8d\n", @calls); 61 } 62