Roo gem

Hello,

I have simple rails application using 'roo gem' to import data from xls
file and store that data into database.

The code is working fine, But my issue is that when i am trying to
import file with 64,000 rows,program is taking approximately 3 Hrs to
complete the task.

So,is it any issue related to 'roo' or any other issues regarding my
code?