dispqlen.d revision 259065
1146572Sharti#!/usr/sbin/dtrace -s 2146572Sharti/* 3146572Sharti * dispqlen.d - dispatcher queue length by CPU. 4146572Sharti * Written using DTrace (Solaris 10 3/05). 5146572Sharti * 6146572Sharti * $Id: dispqlen.d 3 2007-08-01 10:50:08Z brendan $ 7146572Sharti * 8146572Sharti * USAGE: dispqlen.d # hit Ctrl-C to end sample 9146572Sharti * 10146572Sharti * NOTES: The dispatcher queue length is an indication of CPU saturation. 11146572Sharti * It is not an indicatior of utilisation - the CPUs may or may not be 12146572Sharti * utilised when the dispatcher queue reports a length of zero. 13146572Sharti * 14146572Sharti * SEE ALSO: uptime(1M) 15146572Sharti * 16146572Sharti * COPYRIGHT: Copyright (c) 2005 Brendan Gregg. 17146572Sharti * 18146572Sharti * CDDL HEADER START 19146572Sharti * 20146572Sharti * The contents of this file are subject to the terms of the 21146572Sharti * Common Development and Distribution License, Version 1.0 only 22146572Sharti * (the "License"). You may not use this file except in compliance 23146572Sharti * with the License. 24146572Sharti * 25146572Sharti * You can obtain a copy of the license at Docs/cddl1.txt 26146572Sharti * or http://www.opensolaris.org/os/licensing. 27146572Sharti * See the License for the specific language governing permissions 28146572Sharti * and limitations under the License. 29146572Sharti * 30146572Sharti * CDDL HEADER END 31146572Sharti * 32146572Sharti * 27-Jun-2005 Brendan Gregg Created this. 33146572Sharti * 14-Feb-2006 " " Last update. 34146572Sharti */ 35146572Sharti 36146572Sharti#pragma D option quiet 37146572Sharti 38146572Shartidtrace:::BEGIN 39146572Sharti{ 40146572Sharti printf("Sampling... Hit Ctrl-C to end.\n"); 41146572Sharti} 42146572Sharti 43146572Shartiprofile:::profile-1000hz 44146572Sharti{ 45146572Sharti @queue[cpu] = 46146572Sharti lquantize(curthread->t_cpu->cpu_disp->disp_nrunnable, 0, 64, 1); 47146572Sharti} 48146572Sharti 49146572Shartidtrace:::END 50146572Sharti{ 51146572Sharti printa(" CPU %d%@d\n", @queue); 52146572Sharti} 53146572Sharti