What would be the big advantage of tweaking the FileDescriptors ?
The more Profiles you have the more FD you have
The more users you have the more FD you have
users * Profiles = max 1024
that's why you need to increase.
Here is how to blow up your FD in CSP.
Based on Debian Lenny.
Login to your shell of csp
vim /etc/security/limits.conf
Add the follow lines:
root soft nofile 65536
root hard nofile 65536
reboot your server
Note Wait until everything is booted before starting your CSP, otherwise Java will not cope the changes.