Memory consumption in XSL Transformation

[Edouard Mercier]

Hi to all;

I would like to have the confirmation on an intuition. I'm working on a XSL that takes an XML file which contains about 30.000 XML elements (let's call them A elements), each element defining an URI to an XML file.

In my XSL, I read A-element by A-element, read the URI it contains, and then analyze the XML file corresponding to the URI via the 'document' XPath directive (let's name it the B document). This B-document analyzis is basic and I do not use the B-document anymore, once the A-element iteration is over.

I hope that I was clear enough...

My XSLT implementations are Saxon V6.X, Instant Saxon V6.X, and Xalan V2.5: in all those implementations, the RAM consumption when running the transformation is increasing that much that I run out of memory after an about 10.000 A-elements handling.

What I guess, in that the read XML stuff via the 'document' is never freed by the transformer? Am i right?

How can I do in order to "prompt/force" the transformer to garbage the read intermediate B-documents?

Thank you very much for your attention.

Regards,

Edouard

 

[Edouard Mercier]

My guess was right: it seems that whenever you use the 'document' directive, the memory used for the parsing is never recovered later on. Am I right ?

Do you know a way of garbaging this memory? Your help is much appreciated.

Regards,

Edouard