Suppose you're a web hosting reseller and you own a VPS (Virtual Private Server), running on Virtuozzo and managed with Plesk. Knowing your VPS resources (processor, ram, disk space, bandwidth), you'd be interested in determining the limits of your VPS; how many users could your VPS serve, so each of them to be happy about the performance? I faced this situation recently and I'll be very glad if I could get some directions of how we could conduct such test.