Throughput is in returned Web pages per second from the application server.Number of users is number of concurrent Web clients driving the load.Response time is the time to complete the six bookstore uers actionsequences,weighted by frequency of each sequence in the mix. All tests were conducted on ab HP NetServer LT 6000r with four 700MHz Xeon CPUs,2GB of RAM,a Gigabit EthemetIntel Corp.Pro/1000F Server Adapter and249.1GB Ultra3 SCSl hard drives used for database storage.