New Post: XSSF Performance: degrade when creating huge number of rows

Btw, I ran your program based on the latest code in github just now. Here is the latest result.

Start at 2013/11/24 21:51:59
End at 2013/11/24 21:52:01

I switched to Stopwatch to get more precious result. On my computer, it's 1830ms. Much shorter than 1 minute :)