#!/usr/sbin/dtrace -Zs /* * sh_cpudist.d - measure Bourne shell on-CPU times for types of operation. * Written for the sh DTrace provider. * * $Id: sh_cpudist.d,v 1.1.1.1 2015/09/30 22:01:07 christos Exp $ * * This traces shell activity from all Bourne shells on the system that are * running with sh provider support. * * USAGE: sh_cpudist.d # hit Ctrl-C to end * * This script prints distribution plots of on-CPU time for shell * operations. Use sh_cputime.d for summary reports. * * FIELDS: * 1 Filename of the shell or shellscript * 2 Type of call (func/builtin/cmd) * 3 Name of call * * Filename and call names are printed if available. * * COPYRIGHT: Copyright (c) 2007 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 * * 09-Sep-2007 Brendan Gregg Created this. */ #pragma D option quiet dtrace:::BEGIN { printf("Tracing... Hit Ctrl-C to end.\n"); } sh*:::function-entry { self->depth++; self->function[self->depth] = vtimestamp; self->exclude[self->depth] = 0; } sh*:::function-return /self->function[self->depth]/ { this->oncpu_incl = vtimestamp - self->function[self->depth]; this->oncpu_excl = this->oncpu_incl - self->exclude[self->depth]; self->function[self->depth] = 0; self->exclude[self->depth] = 0; this->file = basename(copyinstr(arg0)); this->name = copyinstr(arg1); @types_incl[this->file, "func", this->name] = quantize(this->oncpu_incl / 1000); @types_excl[this->file, "func", this->name] = quantize(this->oncpu_excl / 1000); self->depth--; self->exclude[self->depth] += this->oncpu_incl; } sh*:::builtin-entry { self->builtin = vtimestamp; } sh*:::builtin-return /self->builtin/ { this->oncpu = vtimestamp - self->builtin; self->builtin = 0; @types[basename(copyinstr(arg0)), "builtin", copyinstr(arg1)] = quantize(this->oncpu / 1000); self->exclude[self->depth] += this->oncpu; } sh*:::command-entry { incmd[pid] = basename(copyinstr(arg0)); depth[pid] = self->depth; } sh*:::command-return { incmd[pid] = 0; } proc:::exec-success { /* * Due to thread timing after fork(), this probe can fire before * sh*:::command-entry has, which means we can't predicate this * exec() away just yet. Store the vtimestamp in case it is needed. */ self->command = vtimestamp; } proc:::exit /incmd[ppid] == NULL/ { self->command = 0; } proc:::exit /incmd[ppid] != NULL/ { this->oncpu = vtimestamp - self->command; self->command = 0; @types[incmd[ppid], "cmd", execname] = quantize(this->oncpu / 1000); self->exclude[depth[ppid]] += this->oncpu; incmd[ppid] = 0; depth[ppid] = 0; } dtrace:::END { printf("On-CPU times (us),\n\n"); printa(" %s, %s, %s %@d\n", @types); printf("Exclusive function on-CPU times (us),\n\n"); printa(" %s, %s, %s %@d\n", @types_excl); printf("Inclusive function on-CPU times (us),\n\n"); printa(" %s, %s, %s %@d\n", @types_incl); }