#!/usr/sbin/dtrace -s
/*
* iofileb.d - I/O bytes by filename and process.
* Written using DTrace (Solaris 10 3/05).
*
* This prints a summary of requested disk activity by pathname,
* providing totals of the I/O events in bytes. It is a companion to the
* iofile.d script - which prints in terms of I/O wait time, not bytes.
* I/O wait time is a better metric for understanding performance issues.
* Both disk and NFS I/O are measured.
*
* $Id: iofileb.d 3 2007-08-01 10:50:08Z brendan $
*
* USAGE: iofileb.d # wait several seconds, then hit Ctrl-C
*
* FIELDS:
* PID process ID
* CMD command name
* KB Kilobytes of disk I/O
* FILE Full pathname of the file
*
* COPYRIGHT: Copyright (c) 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
*
* 20-Feb-2006 Brendan Gregg Created this.
* 20-Feb-2006 " " Last update.
*/
#pragma D option quiet
dtrace:::BEGIN
{
printf("Tracing... Hit Ctrl-C to end.\n");
}
io:::start
{
@files[pid, execname, args[2]->fi_pathname] = sum(args[0]->b_bcount);
}
dtrace:::END
{
normalize(@files, 1024);
printf("%6s %-12s %6s %s\n", "PID", "CMD", "KB", "FILE");
printa("%6d %-12.12s %@6d %s\n", @files);
}