#! @PATH_PERL@ -w # $Id$ # Perl version of (summary.sh, loop.awk, peer.awk): # Create summaries from xntpd's loop and peer statistics. # # Copyright (c) 1997, 1999 by Ulrich Windl # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, but # WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. require 5.003; # "never tested with any other version of Perl" use strict; use Getopt::Long; my $log_date_pattern = '[12]\d{3}[01]\d[0-3]\d'; my $statsdir = "/var/log/ntp"; # directory with input files my $outputdir = "/tmp"; # directory for output files my $skip_time_steps = 3600.0; # ignore time offsets larger that this my $startdate = "19700101"; # first data file to use (YYYYMMDD) my $enddate=`date -u +%Y%m%d`; chomp $enddate; --$enddate; my $peer_dist_limit = 400.0; my %options = ("directory|input-directory=s" => \$statsdir, "output-directory=s" => \$outputdir, "skip-time-steps:f" => \$skip_time_steps, "start-date=s" => \$startdate, "end-date=s" => \$enddate, "peer-dist-limit=f" => \$peer_dist_limit); if ( !GetOptions(%options) ) { print STDERR "valid options for $0 are:\n"; my $opt; foreach $opt (sort(keys %options)) { print STDERR "\t--$opt\t(default is "; if ( ref($options{$opt}) eq "ARRAY" ) { print STDERR join(", ", map { "'$_'" } @{$options{$opt}}); } else { print STDERR "'${$options{$opt}}'"; } print STDERR ")\n"; } print STDERR "\n"; die; } # check possibly current values of options die "$statsdir: no such directory" unless (-d $statsdir); die "$outputdir: no such directory" unless (-d $outputdir); die "$skip_time_steps: skip-time-steps must be positive" unless ($skip_time_steps >= 0.0); die "$startdate: invalid start date|$`|$&|$'" unless ($startdate =~ m/.*$log_date_pattern$/); die "$enddate: invalid end date" unless ($enddate =~ m/.*$log_date_pattern$/); $skip_time_steps = 0.128 if ($skip_time_steps == 0); sub min { my ($result, @rest) = @_; map { $result = $_ if ($_ < $result) } @rest; return($result); } sub max { my ($result, @rest) = @_; map { $result = $_ if ($_ > $result) } @rest; return($result); } # calculate mean, range, and standard deviation for offset and frequency sub do_loop { my ($directory, $fname, $out_file) = @_; print "$directory/$fname\n"; open INPUT, "$directory/$fname" or warn "can't open $directory/$fname: $!"; open OUTPUT, ">>$out_file" or die "can't open $out_file: $!"; print OUTPUT "$fname\n"; my ($loop_tmax, $loop_fmax) = (-1e9, -1e9); my ($loop_tmin, $loop_fmin) = (1e9, 1e9); my ($loop_time_rms, $loop_freq_rms) = (0, 0); my $loop_count = 0; my $loop_time = 0; my $loop_freq = 0; my ($freq, $offs); my @Fld; while () { chop; # strip record separator @Fld = split; next if ($#Fld < 4); #NTPv3: 50529 74356.259 -0.000112 16.1230 8 #NTPv3: day, sec.msec, offset, drift_comp, sys_poll #NTPv4: 51333 54734.582 0.000001648 16.981964 0.000001094 0.020938 6 #NTPv4: day, sec.msec, offset, drift_comp, sys_error, clock_stabil, sys_poll if ($Fld[2] > $skip_time_steps || $Fld[2] < -$skip_time_steps) { warn "ignoring loop offset $Fld[2] (file $fname, line $.)\n"; next } $loop_count++; ($offs, $freq) = ($Fld[2], $Fld[3]); $loop_tmax = max($loop_tmax, $offs); $loop_tmin = min($loop_tmin, $offs); $loop_fmax = max($loop_fmax, $freq); $loop_fmin = min($loop_fmin, $freq); $loop_time += $offs; $loop_time_rms += $offs * $offs; $loop_freq += $freq; $loop_freq_rms += $freq * $freq; } close INPUT; if ($loop_count > 1) { $loop_time /= $loop_count; $loop_time_rms = $loop_time_rms / $loop_count - $loop_time * $loop_time; if ($loop_time_rms < 0) { warn "loop_time_rms: $loop_time_rms < 0"; $loop_time_rms = 0; } $loop_time_rms = sqrt($loop_time_rms); $loop_freq /= $loop_count; $loop_freq_rms = $loop_freq_rms / $loop_count - $loop_freq * $loop_freq; if ($loop_freq_rms < 0) { warn "loop_freq_rms: $loop_freq_rms < 0"; $loop_freq_rms = 0; } $loop_freq_rms = sqrt($loop_freq_rms); printf OUTPUT ("loop %d, %.0f+/-%.1f, rms %.1f, freq %.2f+/-%0.3f, var %.3f\n", $loop_count, ($loop_tmax + $loop_tmin) / 2 * 1e6, ($loop_tmax - $loop_tmin) / 2 * 1e6, $loop_time_rms * 1e6, ($loop_fmax + $loop_fmin) / 2, ($loop_fmax - $loop_fmin) / 2, $loop_freq_rms); } else { warn "no valid lines in $directory/$fname"; } close OUTPUT } # calculate mean, standard deviation, maximum offset, mean dispersion, # and maximum distance for each peer sub do_peer { my ($directory, $fname, $out_file) = @_; print "$directory/$fname\n"; open INPUT, "$directory/$fname" or warn "can't open $directory/$fname: $!"; open OUTPUT, ">>$out_file" or die "can't open $out_file: $!"; print OUTPUT "$fname\n"; # we toss out all distances greater than one second on the assumption the # peer is in initial acquisition my ($n, $MAXDISTANCE) = (0, 1.0); my %peer_time; my %peer_time_rms; my %peer_count; my %peer_delay; my %peer_disp; my %peer_dist; my %peer_ident; my %peer_tmin; my %peer_tmax; my @Fld; my ($i, $j); my ($dist, $offs); while () { chop; # strip record separator @Fld = split; next if ($#Fld < 6); #NTPv3: 50529 83316.249 127.127.8.1 9674 0.008628 0.00000 0.00700 #NTPv3: day, sec.msec, addr, status, offset, delay, dispersion #NTPv4: 51333 56042.037 127.127.8.1 94f5 -0.000014657 0.000000000 0.000000000 0.000013214 #NTPv4: day, sec.msec, addr, status, offset, delay, dispersion, skew $dist = $Fld[6] + $Fld[5] / 2; next if ($dist > $MAXDISTANCE); $offs = $Fld[4]; if ($offs > $skip_time_steps || $offs < -$skip_time_steps) { warn "ignoring peer offset $offs (file $fname, line $.)\n"; next } $i = $n; for ($j = 0; $j < $n; $j++) { if ($Fld[2] eq $peer_ident{$j}) { $i = $j; # peer found last; } } if ($i == $n) { # add new peer $peer_ident{$i} = $Fld[2]; $peer_tmax{$i} = $peer_dist{$i} = -1e9; $peer_tmin{$i} = 1e9; $peer_time{$i} = $peer_time_rms{$i} = 0; $peer_delay{$i} = $peer_disp{$i} = 0; $peer_count{$i} = 0; $n++; } $peer_count{$i}++; $peer_tmax{$i} = max($peer_tmax{$i}, $offs); $peer_tmin{$i} = min($peer_tmin{$i}, $offs); $peer_dist{$i} = max($peer_dist{$i}, $dist); $peer_time{$i} += $offs; $peer_time_rms{$i} += $offs * $offs; $peer_delay{$i} += $Fld[5]; $peer_disp{$i} += $Fld[6]; } close INPUT; print OUTPUT " ident cnt mean rms max delay dist disp\n"; print OUTPUT "==========================================================================\n"; my @lines = (); for ($i = 0; $i < $n; $i++) { next if $peer_count{$i} < 2; $peer_time{$i} /= $peer_count{$i}; eval { $peer_time_rms{$i} = sqrt($peer_time_rms{$i} / $peer_count{$i} - $peer_time{$i} * $peer_time{$i}); }; $peer_time_rms{$i} = 0, warn $@ if $@; $peer_delay{$i} /= $peer_count{$i}; $peer_disp{$i} /= $peer_count{$i}; $peer_tmax{$i} = $peer_tmax{$i} - $peer_time{$i}; $peer_tmin{$i} = $peer_time{$i} - $peer_tmin{$i}; if ($peer_tmin{$i} > $peer_tmax{$i}) { # can this happen at all? $peer_tmax{$i} = $peer_tmin{$i}; } push @lines, sprintf "%-15s %4d %8.3f %8.3f %8.3f %8.3f %8.3f %8.3f\n", $peer_ident{$i}, $peer_count{$i}, $peer_time{$i} * 1e3, $peer_time_rms{$i} * 1e3, $peer_tmax{$i} * 1e3, $peer_delay{$i} * 1e3, $peer_dist{$i} * 1e3, $peer_disp{$i} * 1e3; } print OUTPUT sort @lines; close OUTPUT; } sub do_clock { my ($directory, $fname, $out_file) = @_; print "$directory/$fname\n"; open INPUT, "$directory/$fname"; open OUTPUT, ">>$out_file" or die "can't open $out_file: $!"; print OUTPUT "$fname\n"; close INPUT; close OUTPUT; } sub peer_summary { my $in_file = shift; my ($i, $j, $n); my (%peer_ident, %peer_count, %peer_mean, %peer_var, %peer_max); my (%peer_1, %peer_2, %peer_3, %peer_4); my $dist; my $max; open INPUT, "<$in_file" or die "can't open $in_file: $!"; my @Fld; $n = 0; while () { chop; # strip record separator @Fld = split; next if ($#Fld < 7 || $Fld[0] eq 'ident'); $i = $n; for ($j = 0; $j < $n; $j++) { if ($Fld[0] eq $peer_ident{$j}) { $i = $j; last; # peer found } } if ($i == $n) { # add new peer $peer_count{$i} = $peer_mean{$i} = $peer_var{$i} = 0; $peer_max{$i} = 0; $peer_1{$i} = $peer_2{$i} = $peer_3{$i} = $peer_4{$i} = 0; $peer_ident{$i} = $Fld[0]; ++$n; } $dist = $Fld[6] - $Fld[5] / 2; if ($dist < $peer_dist_limit) { $peer_count{$i}++; $peer_mean{$i} += $Fld[2]; $peer_var{$i} += $Fld[3] * $Fld[3]; $max = $Fld[4]; $peer_max{$i} = max($peer_max{$i}, $max); if ($max > 1) { $peer_1{$i}++; if ($max > 5) { $peer_2{$i}++; if ($max > 10) { $peer_3{$i}++; if ($max > 50) { $peer_4{$i}++; } } } } } else { warn "dist exceeds limit: $dist (file $in_file, line $.)\n"; } } close INPUT; my @lines = (); print " host days mean rms max >1 >5 >10 >50\n"; print "==================================================================\n"; for ($i = 0; $i < $n; $i++) { next if ($peer_count{$i} < 2); $peer_mean{$i} /= $peer_count{$i}; eval { $peer_var{$i} = sqrt($peer_var{$i} / $peer_count{$i} - $peer_mean{$i} * $peer_mean{$i}); }; $peer_var{$i} = 0, warn $@ if $@; push @lines, sprintf "%-15s %3d %9.3f% 9.3f %9.3f %3d %3d %3d %3d\n", $peer_ident{$i}, $peer_count{$i}, $peer_mean{$i}, $peer_var{$i}, $peer_max{$i}, $peer_1{$i}, $peer_2{$i}, $peer_3{$i}, $peer_4{$i}; } print sort @lines; } my $loop_summary="$outputdir/loop_summary"; my $peer_summary="$outputdir/peer_summary"; my $clock_summary="$outputdir/clock_summary"; my (@loopfiles, @peerfiles, @clockfiles); print STDERR "Creating summaries from $statsdir ($startdate to $enddate)\n"; opendir SDIR, $statsdir or die "directory ${statsdir}: $!"; rewinddir SDIR; @loopfiles=sort grep /loop.*$log_date_pattern/, readdir SDIR; rewinddir SDIR; @peerfiles=sort grep /peer.*$log_date_pattern/, readdir SDIR; rewinddir SDIR; @clockfiles=sort grep /clock.*$log_date_pattern/, readdir SDIR; closedir SDIR; # remove old summary files map { unlink $_ if -f $_ } ($loop_summary, $peer_summary, $clock_summary); my $date; map { $date = $_; $date =~ s/.*($log_date_pattern)$/$1/; if ($date ge $startdate && $date le $enddate) { do_loop $statsdir, $_, $loop_summary; } } @loopfiles; map { $date = $_; $date =~ s/.*($log_date_pattern)$/$1/; if ($date ge $startdate && $date le $enddate) { do_peer $statsdir, $_, $peer_summary; } } @peerfiles; map { $date = $_; $date =~ s/.*($log_date_pattern)$/$1/; if ($date ge $startdate && $date le $enddate) { do_clock $statsdir, $_, $clock_summary; } } @clockfiles; print STDERR "Creating peer summary with limit $peer_dist_limit\n"; peer_summary $peer_summary if (-f $peer_summary);