Sorry the delay, but i don't have too much time to spend coding. This is not my job and I'm doing this just to get some skills about processing XML data.

Concerning my initial question, I can say that after i apply ignore() method on my program, processing time had a huge reduction as expected. Parsing time drops 33% when input file has 270 MB (initial code takes 9m24s and now takes only 6m16s).

Thank you for your support.

Ricardo