My benchmark foo is very poor but does this show that if you do something with the arguments the "waste" is not as dramatic as your figures show? 
#!/usr/bin/perl

use strict;
use warnings;

use Benchmark qw(cmpthese);

sub f{
  my %hash = @_;
  my $value = $hash{foo};
}
sub g{
  my $hash_ref = shift;
  my $value = $hash_ref->{foo}
}

cmpthese (
    -1 => {
        list => sub { f( foo => 1) },
        ref  => sub { g({foo => 1})},
    }
);
__END__
         Rate  ref list
ref  693652/s   -- -25%
list 919951/s  33%   --

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In reply to Re^3: Preferred technique for named subroutine parameters? by wfsp
in thread Preferred technique for named subroutine parameters? by Anonymous Monk

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