Apache POI Performance

Question

I\'m having performance problems with Apache POI. I\'ve read the FAQ where it refers to a performance test. I\'ve run this test with logging off and 4gb of heap and I can\'t get

Answer 1

Test results on my machine:

• HSSF: 2 sec
• SXSSF: 5 sec
• XSSF: 27 sec

Machine specs:

CPU: Intel i3-2100, 3.10 GHz, 4-cores
RAM: 16GB
OS:  Windows 7 64bit
JDK: 1.7.0_76

I made profiling and found out that XSSF is slow due to the synchronized methods in xmlbeans and poi-ooxml-schemas libraries. You can notify poi developers and ask to check this case.