commit Oleg and Teodor's RD-tree implementation ... this provides the

regression tests for the GiST changes ... this should be integrated into
the regular regression tests similar to Vadim's SPI contrib stuff ...

contrib/intarray/bench/bench.pl

@@ -0,0 +1,104 @@
+#!/usr/bin/perl 
+
+use strict;
+# make sure we are in a sane environment.
+use DBI();
+use DBD::Pg();
+use Time::HiRes qw( usleep ualarm gettimeofday tv_interval );
+use Getopt::Std;
+
+my %opt;
+getopts('d:b:s:veorauc', \%opt);
+
+if ( !( scalar %opt && defined $opt{s} ) ) {
+	print <<EOT;
+Usage:
+$0 -d DATABASE -s SECTIONS [-b NUMBER] [-v] [-e] [-o] [-r] [-a] [-u]
+-d DATABASE   	-DATABASE
+-b NUMBER   	-number of repeats
+-s SECTIONS 	-sections, format	sid1[,sid2[,sid3[...]]]]
+-v 		-verbose (show SQL)
+-e		-show explain
+-r		-use RD-tree index
+-a		-AND section
+-o		-show output
+-u		-unique
+-c 		-count
+
+EOT
+	exit;
+}
+
+$opt{d} ||= '_int4';
+my $dbi=DBI->connect('DBI:Pg:dbname='.$opt{d});
+
+my %table;
+my @where;
+
+$table{message}=1;
+
+if ( $opt{a} ) {
+	if ( $opt{r} ) {
+		push @where, "message.sections @ '{$opt{s}}'";
+	} else {
+		foreach my $sid ( split(/[,\s]+/, $opt{s} )) {
+			push @where, "EXISTS ( select  message_section_map.mid from message_section_map where message.mid=message_section_map.mid and message_section_map.sid = $sid )";
+		}
+	}
+} else {
+	if ( $opt{r} ) {
+		push @where, "message.sections && '{$opt{s}}'";
+	} else {
+		$table{message_section_map} = 1;
+		push @where, "message.mid = message_section_map.mid";
+		push @where, "message_section_map.sid in ($opt{s})";
+	}
+}
+
+my $outf;
+if ( $opt{c} ) {
+	$outf = ( $opt{u} ) ? 'count( distinct message.mid )' : 'count( message.mid )';
+} else {
+	$outf = ( $opt{u} ) ? 'distinct( message.mid )' : 'message.mid';
+}
+my $sql = "select $outf from ".join(', ', keys %table)." where ".join(' AND ', @where).';';
+
+if ( $opt{v} ) {
+	print "$sql\n";
+}
+
+if ( $opt{e} ) {
+	$dbi->do("explain $sql");
+}
+
+my $t0 = [gettimeofday];
+my $count=0;
+my $b=$opt{b};
+$b||=1;
+my @a;
+foreach ( 1..$b ) {
+	@a=exec_sql($dbi,$sql);
+	$count=$#a;
+}
+my $elapsed = tv_interval ( $t0, [gettimeofday]);
+if ( $opt{o} ) {
+	foreach ( @a ) {
+		print "$_->{mid}\t$_->{sections}\n";
+	}
+} 
+print sprintf("total: %.02f sec; number: %d; for one: %.03f sec; found %d docs\n", $elapsed, $b, $elapsed/$b, $count+1 );
+$dbi -> disconnect;
+
+sub exec_sql {
+        my ($dbi, $sql, @keys) = @_;
+        my $sth=$dbi->prepare($sql) || die;
+        $sth->execute( @keys ) || die; 
+        my $r;  
+        my @row;
+        while ( defined ( $r=$sth->fetchrow_hashref ) ) {
+                push @row, $r;
+        }               
+        $sth->finish;   
+        return @row;
+}
+