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143 lines
3.3 KiB
D
Executable File
143 lines
3.3 KiB
D
Executable File
#!/usr/sbin/dtrace -Zs
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/*
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* sh_cpudist.d - measure Bourne shell on-CPU times for types of operation.
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* Written for the sh DTrace provider.
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*
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* $Id: sh_cpudist.d 28 2007-09-13 10:49:37Z brendan $
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*
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* This traces shell activity from all Bourne shells on the system that are
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* running with sh provider support.
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*
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* USAGE: sh_cpudist.d # hit Ctrl-C to end
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*
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* This script prints distribution plots of on-CPU time for shell
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* operations. Use sh_cputime.d for summary reports.
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*
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* FIELDS:
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* 1 Filename of the shell or shellscript
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* 2 Type of call (func/builtin/cmd)
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* 3 Name of call
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*
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* Filename and call names are printed if available.
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*
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* COPYRIGHT: Copyright (c) 2007 Brendan Gregg.
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*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* You can obtain a copy of the license at Docs/cddl1.txt
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* CDDL HEADER END
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*
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* 09-Sep-2007 Brendan Gregg Created this.
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*/
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#pragma D option quiet
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dtrace:::BEGIN
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{
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printf("Tracing... Hit Ctrl-C to end.\n");
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}
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sh*:::function-entry
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{
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self->depth++;
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self->function[self->depth] = vtimestamp;
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self->exclude[self->depth] = 0;
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}
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sh*:::function-return
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/self->function[self->depth]/
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{
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this->oncpu_incl = vtimestamp - self->function[self->depth];
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this->oncpu_excl = this->oncpu_incl - self->exclude[self->depth];
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self->function[self->depth] = 0;
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self->exclude[self->depth] = 0;
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this->file = basename(copyinstr(arg0));
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this->name = copyinstr(arg1);
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@types_incl[this->file, "func", this->name] =
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quantize(this->oncpu_incl / 1000);
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@types_excl[this->file, "func", this->name] =
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quantize(this->oncpu_excl / 1000);
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self->depth--;
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self->exclude[self->depth] += this->oncpu_incl;
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}
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sh*:::builtin-entry
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{
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self->builtin = vtimestamp;
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}
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sh*:::builtin-return
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/self->builtin/
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{
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this->oncpu = vtimestamp - self->builtin;
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self->builtin = 0;
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@types[basename(copyinstr(arg0)), "builtin", copyinstr(arg1)] =
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quantize(this->oncpu / 1000);
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self->exclude[self->depth] += this->oncpu;
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}
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sh*:::command-entry
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{
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incmd[pid] = basename(copyinstr(arg0));
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depth[pid] = self->depth;
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}
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sh*:::command-return
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{
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incmd[pid] = 0;
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}
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proc:::exec-success
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{
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/*
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* Due to thread timing after fork(), this probe can fire before
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* sh*:::command-entry has, which means we can't predicate this
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* exec() away just yet. Store the vtimestamp in case it is needed.
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*/
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self->command = vtimestamp;
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}
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proc:::exit
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/incmd[ppid] == NULL/
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{
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self->command = 0;
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}
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proc:::exit
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/incmd[ppid] != NULL/
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{
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this->oncpu = vtimestamp - self->command;
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self->command = 0;
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@types[incmd[ppid], "cmd", execname] = quantize(this->oncpu / 1000);
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self->exclude[depth[ppid]] += this->oncpu;
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incmd[ppid] = 0;
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depth[ppid] = 0;
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}
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dtrace:::END
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{
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printf("On-CPU times (us),\n\n");
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printa(" %s, %s, %s %@d\n", @types);
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printf("Exclusive function on-CPU times (us),\n\n");
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printa(" %s, %s, %s %@d\n", @types_excl);
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printf("Inclusive function on-CPU times (us),\n\n");
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printa(" %s, %s, %s %@d\n", @types_incl);
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}
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