Oracle iPlanet Web Proxy Server 4.0.14 Performance Tuning, Sizing, and Scaling Guide

Memory

As a baseline, Proxy Server requires 64 Mbytes RAM. Multiple CPUs require at least 64 Mbytes for each CPU. For example, if you have four CPUs, install at least 256 Mbytes RAM for optimal performance. For high numbers of peak concurrent users, also allow extra RAM for the additional threads. After the first 50 concurrent users, add an extra 512 Kbytes for each peak concurrent user.