#!/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 3 2007-08-01 10:50:08Z brendan $
*
* 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);
}