c29d517558
unmodified. For others we'll need to add the missing probes and adjust. This is not attached to the build.
140 lines
3.6 KiB
Perl
Executable File
140 lines
3.6 KiB
Perl
Executable File
#!/usr/bin/perl -w
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#
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# hotuser - sample on-CPU user-level functions and libraries.
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# Written using Perl and DTrace (Solaris 10 03/05)
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#
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# This samples the on-CPU function at 1001 Hertz, for a simple yet
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# effective user-level profiling tool for sampling exclusive function time.
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# The output will identify which function is on the CPU the most - which
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# is the hottest. See Notes/ALLexclusive_notes.txt for an explanation of
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# exclusive time.
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#
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# $Id: hotuser,v 1.1.1.1 2015/09/30 22:01:06 christos Exp $
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#
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# USAGE: hotuser [-hl] { -c command | -p PID }
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#
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# -h # help
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# -l # match libraries, not functions
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# -p PID # examine this PID
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# -c command # run and examine this command
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# eg,
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# hotuser -p 81 # sample user functions from PID 81
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# hotuser -lp 81 # sample user libraries from PID 81
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# hotuser -p `pgrep -n Xorg` # sample Xorg
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#
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# FIELDS:
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# FUNCTION Function name
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# LIBRARY Library name
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# COUNT Number of samples
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# PCNT Percentage of total samples
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#
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# COPYRIGHT: Copyright (c) 2006 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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# 29-Jun-2006 Brendan Gregg Created this.
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# 29-Jun-2006 " " Last update.
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#
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use strict;
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use Getopt::Std;
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#
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# Command Line Arguments
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#
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my $args;
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usage() if defined $ARGV[0] and $ARGV[0] eq "--help";
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getopts('c:hlp:') or usage();
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usage() if defined $main::opt_h and $main::opt_h;
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my $libs = defined $main::opt_l and $main::opt_l ? 1 : 0;
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if (defined $main::opt_c) {
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$args = "-c $main::opt_c";
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}
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elsif (defined $main::opt_p) {
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$args = "-p $main::opt_p";
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}
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else {
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usage();
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}
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#
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# Cleanup on signals
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#
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$SIG{INT} = \&cleanupsig; # Ctrl-C
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$SIG{QUIT} = \&cleanupsig; # Ctrl-\
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$SIG{TERM} = \&cleanupsig; # TERM
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#
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# Declare DTrace script
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#
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my $dtrace = <<END;
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/usr/sbin/dtrace -n '
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#pragma D option quiet
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profile:::profile-1001hz
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/pid == \$target/
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{
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\@pc[arg1] = count();
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}
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dtrace:::END
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{
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printa("OUT: %A %\@d\\n", \@pc);
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}
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' '$args'
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END
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#
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# Run DTrace, process output
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#
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my %Count;
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my $total;
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open DTRACE, "$dtrace |" or die "ERROR1: Can't run dtrace (perms?): $!\n";
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print "Sampling... Hit Ctrl-C to end.\n";
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while (my $line = <DTRACE>) {
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next if $line =~ /^\s*$/;
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next if $line !~ /^OUT: /;
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my ($tag, $addr, $count) = split ' ', $line;
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my ($name, $offset) = split /\+/, $addr;
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next if $name eq "0x0";
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$name =~ s/\`.*// if $libs;
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$Count{$name} += $count;
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$total += $count;
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}
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close DTRACE;
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#
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# Print final report
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#
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printf "\n%-52s %8s %6s\n", $libs ? "LIBRARY" : "FUNCTION", "COUNT", "PCNT";
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foreach my $name (sort { $Count{$a} <=> $Count{$b} } keys %Count) {
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printf "%-52s %8d %5.1f%%\n", $name, $Count{$name},
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100 * $Count{$name} / ($total ? $total : 1);
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}
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#
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# Subroutines
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#
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sub cleanupsig {
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}
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sub usage {
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print STDERR "USAGE: hotuser [-hl] { -c command | -p PID }\n";
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print STDERR " eg,\n";
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print STDERR " hotuser -p 81 # sample user funcs for PID 81\n";
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print STDERR " hotuser -lp 81 # sample user libs for PID 81\n";
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print STDERR " hotuser -p `pgrep -n Xorg` # sample Xorg\n";
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exit 1;
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}
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