priclass.d revision 2
561N/A#!/usr/sbin/dtrace -s
561N/A/*
561N/A * priclass.d - priority distribution by scheduling class.
561N/A * Written using DTrace (Solaris 10 3/05)
561N/A *
561N/A * This is a simple DTrace script that samples at 1000 Hz the current
561N/A * thread's scheduling class and priority. A distribution plot is printed.
561N/A *
561N/A * With priorities, the higher the priority the better chance the thread
561N/A * has of being scheduled.
561N/A *
561N/A * This idea came from the script /usr/demo/dtrace/pri.d, which
561N/A * produces similar output for priority changes, not samples.
561N/A *
561N/A * $Id: priclass.d 3 2007-08-01 10:50:08Z brendan $
561N/A *
561N/A * USAGE: priclass.d # hit Ctrl-C to end sampling
561N/A *
561N/A * FIELDS:
561N/A * value process priority
561N/A * count number of samples of at least this priority
561N/A *
561N/A * Also printed is the scheduling class,
561N/A *
561N/A * TS time sharing
561N/A * IA interactive
561N/A * RT real time
561N/A * SYS system
561N/A * FSS fair share schedular
561N/A *
561N/A * BASED ON: /usr/demo/dtrace/pri.d
561N/A *
561N/A * SEE ALSO: DTrace Guide "profile Provider" chapter (docs.oracle.com)
561N/A * dispadmin(1M)
561N/A *
561N/A * PORTIONS: Copyright (c) 2006 Brendan Gregg.
561N/A *
561N/A * CDDL HEADER START
561N/A *
561N/A * The contents of this file are subject to the terms of the
561N/A * 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
*
* 12-Feb-2006 Brendan Gregg Created this.
* 22-Apr-2006 " " Last update.
*/
#pragma D option quiet
dtrace:::BEGIN
{
printf("Sampling... Hit Ctrl-C to end.\n");
}
profile:::profile-1000hz
{
@count[stringof(curlwpsinfo->pr_clname)]
= lquantize(curlwpsinfo->pr_pri, 0, 170, 10);
}