#!/usr/sbin/dtrace -s /* * rwbypid.d - read/write calls by PID. * Written using DTrace (Solaris 10 3/05) * * This script tracks the number of reads and writes at the syscall level * by processes, printing the totals in a report. This matches reads * and writes whether they succeed or not. * * $Id: rwbypid.d,v 1.1.1.1 2015/09/30 22:01:09 christos Exp $ * * USAGE: rwbypid.d # hit Ctrl-C to end sample * * FIELDS: * PID process ID * CMD process name * DIR Read or Write * COUNT total calls * * COPYRIGHT: Copyright (c) 2005, 2006 Brendan Gregg. * * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License, Version 1.0 only * (the "License"). You may not use this file except in compliance * with the License. * * You can obtain a copy of the license at Docs/cddl1.txt * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * CDDL HEADER END * * 28-Jun-2005 Brendan Gregg Created this. * 20-Apr-2006 " " Last update. */ #pragma D option quiet dtrace:::BEGIN { printf("Tracing... Hit Ctrl-C to end.\n"); } syscall::*read*:entry { @calls[pid, execname, "R"] = sum(arg0); } syscall::*write*:entry { @calls[pid, execname, "W"] = sum(arg0); } dtrace:::END { printf("%6s %-24s %4s %8s\n", "PID", "CMD", "DIR", "COUNT"); printa("%6d %-24s %4s %@8d\n", @calls); }