Sun Java System Application Server Enterprise Edition 8.2 Performance Tuning Guide
Summary
If refragmentation is performed, the number of locks to be configured is:
Nlocks = 4x (y/7000
+ 2) = 2xy/3500 + 2x
Otherwise, the number of locks to be configured is:
Nlocks = 2x (y/7000
+ 2) = xy/3500 + 4x