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I have a small report that, for this particular project, needs to be rendered fast. I haven't noticed this before, but it seems that even for rendering an actual blank page with no data source nor any on-page elements JasperFillManager.fillReport takes at least 1.5 (one and a half) seconds to complete.

In other words, "filling" a blank, compiled JasperReport into a JasperPrint object, before even exporting it to PDF for example, takes 1.5s which seems a lot (the export is way under 100ms). I wonder if there is anything to improve the performance of the fill stage?

Thank you for any hints.

Daniel Paval
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  • Are you using an XML file as datasource? Check this question/answer: http://stackoverflow.com/questions/15875199/jasperreports-fillreport-too-slow-and-resource-consuming – Salvatorelab Feb 25 '14 at 10:01

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