#!/usr/sbin/dtrace -s /* * priclass.d - priority distribution by scheduling class. * Written using DTrace (Solaris 10 3/05) * * This is a simple DTrace script that samples at 1000 Hz the current * thread's scheduling class and priority. A distribution plot is printed. * * With priorities, the higher the priority the better chance the thread * has of being scheduled. * * This idea came from the script /usr/demo/dtrace/pri.d, which * produces similar output for priority changes, not samples. * * $Id: priclass.d,v 1.1.1.1 2015/09/30 22:01:06 christos Exp $ * * USAGE: priclass.d # hit Ctrl-C to end sampling * * FIELDS: * value process priority * count number of samples of at least this priority * * Also printed is the scheduling class, * * TS time sharing * IA interactive * RT real time * SYS system * FSS fair share schedular * * BASED ON: /usr/demo/dtrace/pri.d * * SEE ALSO: DTrace Guide "profile Provider" chapter (docs.sun.com) * dispadmin(1M) * * PORTIONS: 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 * * 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); }