240 lines
7.0 KiB
Plaintext
240 lines
7.0 KiB
Plaintext
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#!/usr/bin/sh
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#
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# dappprof - profile user and library function usage.
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# Written using DTrace (Solaris 10 3/05).
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#
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# The default output traces user functions as they are called. Options
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# can be used to examine libraries and timestamps.
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#
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# $Id: dappprof 65 2007-10-04 11:09:40Z brendan $
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#
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# USAGE: dappprof [-acehoTU] [-u lib] { -p PID | command }
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#
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# -p PID # examine this PID
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# -a # print all details
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# -c # print call counts
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# -e # print elapsed times (us)
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# -o # print on cpu times (us)
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# -T # print totals
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# -u lib # trace this library instead
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# -U # trace all libraries + user functions
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# -b bufsize # dynamic variable buf size (default is "4m")
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# eg,
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# dappprof df -h # run and examine the "df -h" command
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# dappprof -p 1871 # examine PID 1871
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#
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# The elapsed times are interesting, to help identify calls that take
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# some time to complete (during which the process may have context
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# switched off the CPU).
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#
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# SEE ALSO: dapptrace # DTraceToolkit
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# dtruss # DTraceToolkit
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# apptrace
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#
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# COPYRIGHT: Copyright (c) 2005 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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# Author: Brendan Gregg [Sydney, Australia]
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#
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# 16-May-2005 Brendan Gregg Created this.
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# 17-Jul-2005 " " Last update.
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#
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##############################
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# --- Process Arguments ---
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#
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### Default variables
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opt_totals=0; opt_pid=0; pid=0; opt_lib=0; lib=""
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opt_elapsed=0; opt_cpu=0; opt_counts=0; opt_liball=0
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opt_command=0; command=""; opt_buf=0; buf="4m"
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### Process options
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while getopts ab:cehop:Tu:U name
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do
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case $name in
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a) opt_liball=1; opt_counts=1; opt_elapsed=1; opt_cpu=1
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opt_totals=1 ;;
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b) opt_buf=1; buf=$OPTARG ;;
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p) opt_pid=1; pid=$OPTARG ;;
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u) opt_lib=1; lib=$OPTARG ;;
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U) opt_liball=1 ;;
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c) opt_counts=1 ;;
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e) opt_elapsed=1 ;;
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o) opt_cpu=1 ;;
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T) opt_totals=1 ;;
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h|?) cat <<-END >&2
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USAGE: dappprof [-cehoTU] [-u lib] { -p PID | command }
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-p PID # examine this PID
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-a # print all details
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-c # print syscall counts
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-e # print elapsed times (us)
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-o # print on cpu times
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-T # print totals
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-u lib # trace this library instead
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-U # trace all libraries + user funcs
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-b bufsize # dynamic variable buf size
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eg,
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dappprof df -h # run and examine "df -h"
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dappprof -p 1871 # examine PID 1871
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dappprof -ap 1871 # print all data
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END
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exit 1
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esac
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done
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shift `expr $OPTIND - 1`
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### Option logic
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if [ $opt_pid -eq 0 ]; then
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opt_command=1
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if [ "$*" = "" ]; then
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$0 -h
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exit
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fi
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command="$*"
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fi
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if [ $opt_elapsed -eq 0 -a $opt_cpu -eq 0 -a $opt_counts -eq 0 ]; then
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opt_elapsed=1;
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fi
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### Probe logic
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if [ $opt_liball -eq 1 ]; then
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probe_entry='pid$target:::entry'
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probe_return='pid$target:::return'
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elif [ $opt_lib -eq 1 ]; then
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probe_entry='pid$target:'$lib'::entry'
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probe_return='pid$target:'$lib'::return'
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else
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probe_entry='pid$target:a.out::entry'
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probe_return='pid$target:a.out::return'
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fi
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#################################
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# --- Main Program, DTrace ---
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#
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### Define D Script
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dtrace='
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#pragma D option quiet
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/*
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* Command line arguments
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*/
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inline int OPT_command = '$opt_command';
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inline int OPT_liball = '$opt_liball';
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inline int OPT_elapsed = '$opt_elapsed';
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inline int OPT_cpu = '$opt_cpu';
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inline int OPT_counts = '$opt_counts';
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inline int OPT_totals = '$opt_totals';
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inline int OPT_pid = '$opt_pid';
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inline int PID = '$pid';
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inline string NAME = "'$pname'";
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dtrace:::BEGIN
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/! OPT_command/
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{
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printf("Tracing... Hit Ctrl-C to end...\n");
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}
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/*
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* Save syscall entry info
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*/
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'$probe_entry'
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{
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/* set function depth */
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this->fdepth = ++fdepth[probefunc];
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/* set start details */
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self->start[probefunc,this->fdepth] = timestamp;
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self->vstart[probefunc,this->fdepth] = vtimestamp;
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/* count occurances */
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OPT_counts && OPT_liball ? @Counts[probemod,probefunc] = count() : 1;
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OPT_counts && ! OPT_liball ? @Counts[probefunc] = count() : 1;
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OPT_counts && OPT_totals && OPT_liball ?
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@Counts["TOTAL:",""] = count() : 1;
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OPT_counts && OPT_totals && ! OPT_liball ?
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@Counts["TOTAL:"] = count() : 1;
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}
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/*
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* Print return data
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*/
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/* print 3 arg output - default */
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'$probe_return'
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/self->start[probefunc,fdepth[probefunc]]/
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{
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/* fetch function depth */
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this->fdepth = fdepth[probefunc];
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/* calculate elapsed time */
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this->elapsed = timestamp - self->start[probefunc,this->fdepth];
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self->start[probefunc,this->fdepth] = 0;
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this->cpu = vtimestamp - self->vstart[probefunc,this->fdepth];
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self->vstart[probefunc,this->fdepth] = 0;
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/* save elapsed times */
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OPT_elapsed && OPT_liball ?
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@Elapsed[probemod,probefunc] = sum(this->elapsed) : 1;
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OPT_elapsed && ! OPT_liball ?
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@Elapsed[probefunc] = sum(this->elapsed) : 1;
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OPT_elapsed && OPT_totals && OPT_liball ?
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@Elapsed["TOTAL:",""] = sum(this->elapsed) : 1;
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OPT_elapsed && OPT_totals && ! OPT_liball ?
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@Elapsed["TOTAL:"] = sum(this->elapsed) : 1;
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/* save cpu times */
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OPT_cpu && OPT_liball ? @CPU[probemod,probefunc] = sum(this->cpu) : 1;
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OPT_cpu && ! OPT_liball ? @CPU[probefunc] = sum(this->cpu) : 1;
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OPT_cpu && OPT_totals && OPT_liball ?
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@CPU["TOTAL:",""] = sum(this->cpu) : 1;
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OPT_cpu && OPT_totals && ! OPT_liball ?
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@CPU["TOTAL:"] = sum(this->cpu) : 1;
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}
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/* print counts */
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dtrace:::END
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{
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/* print counts */
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OPT_counts ? printf("\n%-49s %16s\n","CALL","COUNT") : 1;
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OPT_counts && OPT_liball ? printa("%-16s %-32s %@16d\n",@Counts) : 1;
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OPT_counts && ! OPT_liball ? printa("%-49s %@16d\n",@Counts) : 1;
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/* print elapsed times */
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OPT_elapsed ? printf("\n%-49s %16s\n","CALL","ELAPSED") : 1;
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OPT_elapsed && OPT_liball ? printa("%-16s %-32s %@16d\n",@Elapsed) : 1;
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OPT_elapsed && ! OPT_liball ? printa("%-49s %@16d\n",@Elapsed) : 1;
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/* print cpu times */
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OPT_cpu ? printf("\n%-49s %16s\n","CALL","CPU") : 1;
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OPT_cpu && OPT_liball ? printa("%-16s %-32s %@16d\n",@CPU) : 1;
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OPT_cpu && ! OPT_liball ? printa("%-49s %@16d\n",@CPU) : 1;
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}
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'
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### Run DTrace
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if [ $opt_command -eq 1 ]; then
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/usr/sbin/dtrace -x dynvarsize=$buf -x evaltime=exec -n "$dtrace" \
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-c "$command" >&2
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else
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/usr/sbin/dtrace -x dynvarsize=$buf -n "$dtrace" -p "$pid" >&2
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fi
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