Sun Java System Web Server 6.1 SP6 Performance Tuning, Sizing, and Scaling Guide

Files Open in a Single Process

Different platforms have different limits on the number of files that can be open in a single process at one time. For busy sites, increase that number to 8192. To do so on Solaris, make the change in the file /etc/system by setting rlim_fd_max, and then reboot.