Swap File virtualizer File Size is more than excel repprt

[Sandeep.cheekati289]

Hi,

I am generating an excel report with around 1 lac records equal to 31 Mb.

Swap File virtualizer generates around 156 Mb which is equal to 5 times the actual report downloaded.

And after swap File writing is completed, it copies to tmp directory with file name like file.os........tmp. this tmp file size is around 420 Mb, which is around 2.8 times the swap File size.

Why the swap File and tmp file sizes are more compared to actual downloaded file? Can anyone answer plz?

By the way, I am using jasperreports 6.11

[jgust]

The swap file is a mechanism to offload memory that java has access to so that you don't exceed the limit.  It is not formatted data but a dump of memory.  Excel, on the other hand, is not only data but a zipped XML file.  The two are not the same.