Slow PDF format output

[Konstantin Okonechnikov]

The report in PDF format for large datasets might take rather long time. For example, in case of thousands of chromosomes the report in HTML format might take up to 2 minutes, while in PDF format around one hour.

[Konstantin Okonechnikov]

The issue occurs due to the slow generation of table with many lines (adding document command). Most likely rewriting the code using iText library might help. Source: http://softwarerecs.stackexchange.com/questions/18673/what-is-the-best-free-or-nearly-free-pdf-library-for-java