In the documentations lays your answers my friend...

Quoted from mod_perl tuning doc: 
Be Careful with Symbolic Links

 

As you know Apache::Registry caches the scripts in the packages whose
names are constructed by scripts' URI. If you have the same script that
can be reached by different URIs, which is possible if you have used
symbolic links, you will get the same script stored twice in the memory.


Thus you can not use Symlinks to do what i wanted to: cache scripts between 2 virtual hosts, using symbolinc links.
By the way PodMaster, your explanation on require and use was nice, but off the topic of my question (probably my question that is not very clear i guess).
If anybody has a solution to minimize the amount of memory taken when using the same set of modules from 2 vhosts, I'd be very glad.

In reply to Re: how mod_perl finds if code has already been compiled by Sihal
in thread how mod_perl finds if code has already been compiled by Sihal

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