#!/usr/local/bin/perl -w
#
-# Script to gather statistical info from the unbound logfile.
-# NB: this script does not support multiple threads.
+# Script to parse the output from the unbound namedaemon.
+# Unbound supports a threading model, and outputs a multiline log-blob for
+# every thread.
+#
+# This script should parse all threads of the once, and store it
+# in a local cached file for speedy results when queried lots.
#
-
use strict;
use POSIX qw(SEEK_END);
use Storable;
use FileHandle;
-use Data::Dumper;
use Carp qw(croak carp);
use constant UNBOUND_CACHE => "/var/tmp/unbound-cache.stor";
my $run_from_cron = @ARGV && $ARGV[0] eq "--cron" && shift;
my $DEBUG = -t STDERR;
-### if cache exists and is newer than 3 minutes
-if ( -r UNBOUND_CACHE && -M _ < 3/24/60 && !$run_from_cron ) {
- print STDERR "Cached results:\n" if $DEBUG;
- my $result = retrieve(UNBOUND_CACHE);
- print join("\n", @$result), "\n";
- exit;
-}
+# NB. VERY IMPORTANTES: set this when running this script.
+my $numthreads = 4;
+### if cache exists, read it in. and is newer than 3 minutes
+if ( -r UNBOUND_CACHE ) {
+ my $result = retrieve(UNBOUND_CACHE);
+ if (-M _ < 3/24/60 && !$run_from_cron ) {
+ print STDERR "Cached results:\n" if $DEBUG;
+ print join("\n", @$result), "\n";
+ exit;
+ }
+}
my $logfile = shift or die "Usage: parseunbound.pl --cron unboundlogfile";
my $in = new FileHandle $logfile or die "Cannot open $logfile: $!\n";
-# Stats array containing 1 or more stats hashes.
-my @totalstats = ();
-# Each stats hash contains name/value pairs of the actual numbers for that thread.
-# there is a special key 'thread' that indicates the thread.
-my $stats = {};
-my $inblock = 0;
+# there is a special key 'thread' that indicates the thread. its not used, but returned anyway.
my @records = ('thread', 'queries', 'cachehits', 'recursions', 'recursionavg',
- 'outstandingmax', 'outstandingavg', 'outstandingexc',
- 'median25', 'median50', 'median75',
- 'us_0', 'us_1', 'us_2', 'us_4', 'us_8', 'us_16', 'us_32', 'us_64',
- 'us_128', 'us_256', 'us_512', 'us_1024', 'us_2048', 'us_4096',
- 'us_8192', 'us_16384', 'us_32768', 'us_65536', 'us_131072',
- 'us_262144', 'us_524288', 's_1', 's_2', 's_4', 's_8', 's_16',
- 's_32', 's_64', 's_128', 's_256', 's_512');
-
+ 'outstandingmax', 'outstandingavg', 'outstandingexc',
+ 'median25', 'median50', 'median75',
+ 'us_0', 'us_1', 'us_2', 'us_4', 'us_8', 'us_16', 'us_32',
+ 'us_64', 'us_128', 'us_256', 'us_512', 'us_1024', 'us_2048',
+ 'us_4096', 'us_8192', 'us_16384', 'us_32768', 'us_65536',
+ 'us_131072', 'us_262144', 'us_524288', 's_1', 's_2', 's_4',
+ 's_8', 's_16', 's_32', 's_64', 's_128', 's_256', 's_512');
+# Stats hash containing one or more keys. for every thread, 1 key.
+my %allstats = (); # key="$threadid", stats={key => value}
+my %startstats = (); # when we got a queries entry for this thread
+my %donestats = (); # same, but only when we got a histogram entry for it
+# stats hash contains name/value pairs of the actual numbers for that thread.
my $offset = 0;
+my $inthread=0;
+my $inpid;
-while ( !%$stats ) {
+# We should continue looping untill we meet these conditions:
+# a) more total queries than the previous run (which defaults to 0) AND
+# b) parsed all $numthreads threads in the log.
+my $numqueries = $previousresult ? $previousresult->[1] : 0;
- $offset += 2500;
+# Main loop
+while ( scalar keys %startstats < $numthreads || scalar keys %donestats < $numthreads) {
+ $offset += 10000;
if ( $offset > -s $logfile or $offset > 10_000_000 ) {
die "Cannot find stats in $logfile\n";
}
$in->seek(-$offset, SEEK_END) or croak "cannot seek $logfile: $!\n";
+
for my $line ( <$in> ) {
- chomp($line);
- #print ">> $line\n";
+ chomp($line);
+
+ #[1208777234] unbound[6705:0]
+ if ($line =~ m/^\[\d+\] unbound\[\d+:(\d+)\]/) {
+ $inthread = $1;
+ if ($inthread + 1 > $numthreads) {
+ die "Hey. lazy. change \$numthreads in this script to ($inthread)\n";
+ }
+ }
+ # this line doesn't contain a pid:thread. skip.
+ else {
+ next;
+ }
- if ( !$inblock && $line =~ m/info: server stats for thread (\d+): (\d+) queries, (\d+) answers from cache, (\d+) recursions/ ) {
- $inblock = 1;
- # NB: this clears the previous stats
- $stats = {
- thread => $1,
- queries => $2,
- cachehits => $3,
- recursions => $4,
- };
- #print STDERR "Parsing stats from thread " . $stats->{thread} . "\n";
- }
- elsif ( $inblock && $line =~ m/info: server stats for thread (\d+): requestlist max (\d+) avg ([0-9\.]+) exceeded (\d+)/ ) {
- $stats->{outstandingmax} = $2;
- $stats->{outstandingavg} = int($3); # This is a float; rrdtool only handles ints.
- $stats->{outstandingexc} = $4;
- }
- if ( $inblock && $line =~ m/info: average recursion processing time ([0-9\.]+) sec/ ) {
- $stats->{recursionavg} = int($1 * 1000); # change sec to milisec.
- }
- if ( $inblock && $line =~ m/info: histogram of recursion processing times/ ) {
- next;
- }
- if ( $inblock && $line =~ m/info: \[25%\]=([0-9\.]+) median\[50%\]=([0-9\.]+) \[75%\]=([0-9\.]+)/ ) {
- $stats->{median25} = int($1 * 1000000); # change seconds to usec
- $stats->{median50} = int($2 * 1000000);
- $stats->{median75} = int($3 * 1000000);
- }
- if ( $inblock && $line =~ m/info: lower\(secs\) upper\(secs\) recursions/ ) {
- next;
- }
- elsif ( $inblock && $line =~ m/info:\s+(\d+)\.(\d+)\s+(\d+)\.(\d+)\s+(\d+)/ ) {
- my ($froms, $fromus, $toms, $tous, $counter) = ($1, $2, $3, $4, $5);
- my $prefix = '';
- if ($froms > 0) {
- $stats->{'s_' . int($froms)} = $counter;
- } else {
- $stats->{'us_' . int($fromus)} = $counter;
- }
- if ($froms == '512') {
- $inblock = 0;
- #push @totalstats, $stats;
- # or print $stats.
- }
- }
- else {
- #print STDERR "Cannot parse line: $line (unexpected, inblock=$inblock)\n";
- }
+ if ( $line =~ m/info: server stats for thread \d+: (\d+) queries, (\d+) answers from cache, (\d+) recursions/ ) {
+ $startstats{$inthread} = 1;
+ $allstats{$inthread}->{thread} = $inthread;
+ $allstats{$inthread}->{queries} = $1;
+ $allstats{$inthread}->{cachehits} = $2;
+ $allstats{$inthread}->{recursions} = $3;
+ }
+ elsif ( $line =~ m/info: server stats for thread (\d+): requestlist max (\d+) avg ([0-9\.]+) exceeded (\d+)/ ) {
+ $allstats{$inthread}->{outstandingmax} = $2;
+ $allstats{$inthread}->{outstandingavg} = int($3); # This is a float; rrdtool only handles ints.
+ $allstats{$inthread}->{outstandingexc} = $4;
+ }
+ elsif ( $line =~ m/info: average recursion processing time ([0-9\.]+) sec/ ) {
+ $allstats{$inthread}->{recursionavg} = int($1 * 1000); # change sec to milisec.
+ }
+ elsif ( $line =~ m/info: histogram of recursion processing times/ ) {
+ next;
+ }
+ elsif ( $line =~ m/info: \[25%\]=([0-9\.]+) median\[50%\]=([0-9\.]+) \[75%\]=([0-9\.]+)/ ) {
+ $allstats{$inthread}->{median25} = int($1 * 1000000); # change seconds to usec
+ $allstats{$inthread}->{median50} = int($2 * 1000000);
+ $allstats{$inthread}->{median75} = int($3 * 1000000);
+ }
+ elsif ( $line =~ m/info: lower\(secs\) upper\(secs\) recursions/ ) {
+ # since after this line we're unsure if we get these numbers
+ # at all, we sould consider this marker as the end of the
+ # block. Chances that we're parsing a file halfway written
+ # at this stage are small. Bold statement.
+ $donestats{$inthread} = 1;
+ next;
+ }
+ elsif ( $line =~ m/info:\s+(\d+)\.(\d+)\s+(\d+)\.(\d+)\s+(\d+)/ ) {
+ my ($froms, $fromus, $toms, $tous, $counter) = ($1, $2, $3, $4, $5);
+ my $prefix = '';
+ if ($froms > 0) {
+ $allstats{$inthread}->{'s_' . int($froms)} = $counter;
+ } else {
+ $allstats{$inthread}->{'us_' . int($fromus)} = $counter;
+ }
+ }
}
}
my @result;
+# loop on the records we want to store
for my $key ( @records ) {
- $stats->{$key} ||= 0;
- print STDERR "$key = " . $stats->{$key} . "\n" if $DEBUG;
- push @result, $stats->{$key};
+ my $sum = 0;
+ # these are the different threads parsed
+ foreach my $thread ( 0 .. $numthreads - 1 ) {
+ $sum += ($allstats{$thread}->{$key} || 0);
+ }
+ print STDERR "$key = " . $sum . "\n" if $DEBUG;
+ push @result, $sum;
}
print join("\n", @result), "\n";
store \@result, UNBOUND_CACHE;
+if ($DEBUG) {
+ print STDERR "Threads: " . (scalar keys %allstats) . "\n";
+}
projects / thirdparty / unbound.git / commitdiff
