It's working!
I used choroba's advice and removed the whole if...else construct.
Resultant loop looks like this:
while (my $row= $csv->getline_hr($fh))
{
$linecounter++;
my $ip=$row->{'Source address'};
my $url=$row->{'URL/Filename'};
push @{ $ipURL{$ip} }, $url;
if (!($linecounter % 50000))
{
print "Lines: $linecounter\n";
}
}
formatOutput(\%ipURL);
# print Dumper \%ipURL;
The entire thing runs in about 45 seconds now:
perl test-urlListbyIP.pl
Lines: 50000
Lines: 100000
Lines: 150000
Lines: 200000
Lines: 250000
Lines: 300000
Lines: 350000
Lines: 400000
Lines: 450000
Lines: 500000
Lines: 550000
Lines: 600000
Lines: 650000
Lines: 700000
Lines: 750000
Lines: 800000
Lines: 850000
Formatting Output...
List End:1316
Execution Time: 44.18 s
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