rlm_perl , unlang and Exec-Wait with Perl

[rsg]

Hi,

How could one compare between Rlm_perl and Unlang(or any other
relevant module) for performance.

I've read in http://wiki.freeradius.org/index.php/Rlm_perl

that rlm_perl supports muliple instances and threads allowing faster processing.

How is it with policies done using unlang? ......Faster, slower or no
significant diff?

As described in the same site 'Exec-Program-Wait' with perl scripts is
slower than rlm_perl.

Would like to have a clearer view about these points.

Thanks,

rg