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Diffstat (limited to 'external/unbound/contrib/parseunbound.pl')
| -rw-r--r-- | external/unbound/contrib/parseunbound.pl | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/external/unbound/contrib/parseunbound.pl b/external/unbound/contrib/parseunbound.pl new file mode 100644 index 000000000..6a6a76d6f --- /dev/null +++ b/external/unbound/contrib/parseunbound.pl @@ -0,0 +1,140 @@ +#!/usr/local/bin/perl -w +# +# 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 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; + +# 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: $!\n"; + +# there is a special key 'thread' that indicates the thread. its not used, but returned anyway. +my @records = ('thread', 'queries', 'cachehits', 'recursions', 'recursionavg', + 'outstandingmax', 'outstandingavg', 'outstandingexc', + 'median25', 'median50', 'median75', + 'us_0', 'us_1', 'us_2', 'us_4', 'us_8', 'us_16', 'us_32', + 'us_64', 'us_128', 'us_256', 'us_512', 'us_1024', 'us_2048', + 'us_4096', 'us_8192', 'us_16384', 'us_32768', 'us_65536', + 'us_131072', 'us_262144', 'us_524288', 's_1', 's_2', 's_4', + 's_8', 's_16', 's_32', 's_64', 's_128', 's_256', 's_512'); +# Stats hash containing one or more keys. for every thread, 1 key. +my %allstats = (); # key="$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; + +# 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; + +# 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($line); + + #[1208777234] unbound[6705:0] + if ($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 ( $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 ) { + 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"; +} |