does begin block effect any performance in modperl

["abhishek jain" <suppressed>]

Hi friends,

i need to know that if i add the following block then will it affect anything in the execution of modperl apart from first time run.

BEGIN{
require'abc.pl';
require'large_file.pl';

};

I mean anything relative to the performance.is the begin block called everytime orjust the first time and is it safe to define a function in a file and call it with this method rather than a package ,

Pl. help me.

Thanks,
Abhishek jain.