I was curious so I ran my own benchmark. It seems to validate yours. Looks like a consistent 200% increase in speed with XML::Parser.
use strict;
use warnings;
use XML::Simple;
use Benchmark qw/cmpthese/;
cmpthese(-5, {
"Default" => sub { loadit(); },
"XML::Parser" => sub { loadit("XML::Parser"); },
"XML::SAX::Expat" => sub { loadit("XML::SAX::Expat"); },
});
sub loadit {
my $parser = shift || "";
local $ENV{XML_SIMPLE_PREFERRED_PARSER} = $parser;
my $xs = XML::Simple->new(ForceArray => 0, KeyAttr => {});
my $xml = $xs->XMLin("xmltest.xml");
}
__DATA__
C:\test>perl xmlbench.pl
Rate XML::SAX::Expat Default XML::Parser
XML::SAX::Expat 4.23/s -- -3% -67%
Default 4.36/s 3% -- -66%
XML::Parser 12.8/s 203% 194% --
C:\test>perl xmlbench.pl
Rate XML::SAX::Expat Default XML::Parser
XML::SAX::Expat 4.35/s -- -0% -66%
Default 4.36/s 0% -- -66%
XML::Parser 12.9/s 197% 196% --
C:\test>perl xmlbench.pl
Rate XML::SAX::Expat Default XML::Parser
XML::SAX::Expat 4.37/s -- -1% -66%
Default 4.40/s 1% -- -66%
XML::Parser 13.0/s 197% 195% --
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