Is there a penalty for using the DB package. As in the example of the caller function taken from Carp. 
my @a;
while ( do { { package DB; @a = caller($i++) } } ) {
  my @args = @DB::args;  # odd results for some data arguments
}

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It seems that this would give a penalty since there is now a copy of all arguments in @DB::args - unless @DB::args are just special pointers to the actual data with magic lookups upon access. Anyway - anybody have insight?

my @a=qw(random brilliant braindead); print $a[rand(@a)];

In reply to package DB penalty? by Rhandom

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