What is the difference between JRPdfExporter in jasper report v.3.5.3 and v6.3.1 library

[thuongkaka01]

I have an old report template with the jasper report 3.5.3 library. I need to upgrade library from v3.5.3 to v6.3.1. My problems arise when I export the old template to pdf format.

 

**+With v3.5.3 library:**

[export_report_with_3_5_3_library][1]

 

 

**+With v6.3.1 library:**

[export_report_with_6_3_1_library][2]

 

 

  [1]: https://i.stack.imgur.com/ix8uc.png

  [2]: https://i.stack.imgur.com/xvpDE.png

 

I have used the same template report. Why are the differences here?

 

The time for exporting with 20K resource records:

 

+With v3.5.3 library: 6207 milliseconds

 

+With v6.3.1 library: 9991 milliseconds

 

The code is used to export the report to pdf format.

 

JasperExportManager.exportReportToPdfFile(filedReport, outputFileName);[/code]

 

 

I don't know why the function exportReportToPdfFile in the 6.3.1 library run longer than in the 3.5.3 library.

 

**+With v3.5.3 library:** about 335 milliseconds

 

**+With v6.3.1 library:** greater than 4000 milliseconds.

 

Could you please help me to improve the performance or suggest a method deal with it?

 

I think the new library work many things than the old library as described above (the pictures).

[thuongkaka01]

Please help me ! please![/code]

 

[marianol]

Check which report virtualizer is being used in each library that may have changed over releases. A jump from 3.5 to 6.3 a lot of years have gone by :)

http://community.jaspersoft.com/wiki/virtualizers-jasperreports