#!/usr/sbin/dtrace -s
/*
* threaded.d - sample multi-threaded CPU usage.
* Written using DTrace (Solaris 10 3/05).
*
* This measures thread IDs as a process runs across multiple CPUs.
* It is a simple script that can help determine if a multi-threaded
* application is effectively using it's threads, or if the threads have
* serialised. See the example file in Docs/Examples/threaded_example.txt
* for a demonstration.
*
* $Id: threaded.d 3 2007-08-01 10:50:08Z brendan $
*
* USAGE: threaded.d
*
* FIELDS:
* PID process ID
* CMD process name
* value thread ID
* count number of samples
*
* SEE ALSO: prstat -L
*
* COPYRIGHT: Copyright (c) 2005 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
*
* Author: Brendan Gregg [Sydney, Australia]
*
* 25-Jul-2005 Brendan Gregg Created this.
* 25-Jul-2005 " " Last update.
*/
#pragma D option quiet
/*
* Sample at 100 Hertz
*/
profile:::profile-100
/pid != 0/
{
@sample[pid, execname] = lquantize(tid, 0, 128, 1);
}
/*
* Print output every 1 second
*/
profile:::tick-1sec
{
printf("%Y,\n", walltimestamp);
printa("\n PID: %-8d CMD: %s\n%@d", @sample);
printf("\n");
trunc(@sample);
}