#!/usr/sbin/dtrace -s /* * stacksize.d - measure stack size for running threads. * Written using DTrace (Solaris 10 3/05). * * $Id: stacksize.d,v 1.1.1.1 2015/09/30 22:01:07 christos Exp $ * * USAGE: stacksize.d # hit Ctrl-C to end sample * * FIELDS: * value size of the user stack * count number of samples at this size * * SEE ALSO: pmap(1) * * COPYRIGHT: Copyright (c) 2006 Jonathan Adams * * 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 * * 16-Feb-2006 Jonathan Adams Created this. * 16-Feb-2006 " " Last update. */ #pragma D option quiet this uintptr_t stkinfoptr; this uintptr_t stkptr; dtrace:::BEGIN { trace("Sampling... Hit Ctrl-C to end\n"); } sched:::on-cpu, profile:::profile-997 { this->stkinfoptr = 0; this->stkptr = 0; } sched:::on-cpu, profile:::profile-997 /execname != "sched"/ { this->stkinfoptr = curthread->t_lwp->lwp_ustack; this->stkptr = (uintptr_t)0; } sched:::on-cpu, profile:::profile-997 /this->stkinfoptr != 0 && curpsinfo->pr_dmodel == PR_MODEL_ILP32/ { this->stkinfo32 = (stack32_t *)copyin(this->stkinfoptr, sizeof (stack32_t)); this->stktop = (uintptr_t)this->stkinfo32->ss_sp + this->stkinfo32->ss_size; this->stkptr = (uintptr_t)uregs[R_SP]; } sched:::on-cpu, profile:::profile-997 /this->stkinfoptr != 0 && curpsinfo->pr_dmodel == PR_MODEL_LP64/ { this->stkinfo = (stack_t *)copyin(this->stkinfoptr, sizeof (stack_t)); this->stktop = (uintptr_t)this->stkinfo->ss_sp + this->stkinfo->ss_size; this->stkptr = (uintptr_t)uregs[R_SP]; } sched:::on-cpu, profile:::profile-997 /this->stkptr != 0/ { @sizes[execname] = quantize(this->stktop - this->stkptr); } dtrace:::ERROR { @errors[execname] = count(); } dtrace:::END { printa(@sizes); printf("\nErrors:\n"); printa(" %@d %s\n", @errors); }