#!/usr/sbin/dtrace -s /* * runocc.d - run queue occupancy by CPU. * Written using DTrace (Solaris 10 3/05). * * This prints the dispatcher run queue occupancy by CPU each second. * A consistant run queue occupancy is a sign of CPU saturation. * * The value is similar to that seen in "sar -q", however this is * calculated in a more accurate manner - sampling at 1000 Hertz. * * $Id: runocc.d,v 1.1.1.1 2015/09/30 22:01:07 christos Exp $ * * USAGE: runocc.d * * FIELDS: * CPU cpu ID * %runocc % run queue occupancy, sampled at 1000 Hertz * * SEE ALSO: Solaris Internals 2nd Ed, vol 2, CPU chapter. * * 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 * * 02-Mar-2006 Brendan Gregg Created this. * 24-Apr-2006 " " Last update. */ #pragma D option quiet profile-1000hz /curthread->t_cpu->cpu_disp->disp_nrunnable/ { @qocc[cpu] = count(); } profile:::tick-1sec { normalize(@qocc, 10); printf("\n%8s %8s\n", "CPU", "%runocc"); printa("%8d %@8d\n", @qocc); clear(@qocc); }