This question is almost impossible to answer. It mostly depends on your site.

Imagine you've got a site with 100'000'000 pages in one directory. Depending on how you access the pages you might end up having a single array in the PHP code containing all these elements. 32MB won't be enough.

Pagination is one way to avoid that. A concept which in a smiliar way would work as well. In theory it might be possible to split the indexer into several processes. The first one indexes 10 documents and terminates, then there's another (new) process indexing 10 more pages... But since this is using Zend_Search, it's probably a question which is hard to answer by c5 community members without digging into the code (unless someone is very familiar with the zend framework)

Answer: No, unless the code is rewritten there's no way to restrict the use of memory.

You can't restrict Photoshop to use 64k of memory to make sure it runs on your Commodore ;-)

Thanks Remo. Is there a way I can test what memory my site would need to index?

Thanks