[CLucene-dev] RAM usage while indexing

[muhammad i. <m.i...@gm...>]

Hello,
I am trying to index large files as follows

for(int j = 0; (j < pagesIds.count())&& !m_stop ; j++)

                {

                    pagesText =
m_DbManager->getBookPage(m_booksIds.at(i), pagesIds.at(j)).toUtf8();

                    if(!pagesText.isEmpty())

                    {

                        Document* doc =
fileDocument(QString::number(pagesIds.at(j)),
QString::number(m_booksIds.at(i)), pagesText);

                        writer->addDocument(doc);

                        _CLDELETE(doc);

                    }

                }


but when the number of files exceeds 5000 files the application usage of my
computer ram is 2 GB
I tried to debug and i found that this happens in

IndexWriter::addDocument(Document*)

i tried to set
IndexWriter->setMergeFactor(5);
and also
IndexWriter->setRAMBufferSizeMB(10);
I know the default ram usage should be 16 MB but i just tried.

I am working on master branch and i merged with it memory_leaks branch.
is am i missing something?

Mohammad Ismael