The SSL Benchmark

The parameter that measures SSL performance of a given processor is simply the number of secure transactions that can be handled per second. This benchmark encapsulates the entire SSL transaction, beginning with the external client, crossing the network to the server, traveling through the interrupt stack, network code, operating system, Web server, and cryptographic libraries to the data. Measurement of the performance time is not completed until the transaction crosses all the way back out again.

During benchmark tests, the best SSL performance was obtained with an Itanium-based server running Zeus Web Server software on the HP-UX operating system. This combination delivered almost 1,200 SSL transactions per second with a realistic SSL workload (1,024-bit RSA, 128-bit RC4, SHA, and 14-kB transfers). These results corroborate the trend detailed in Figure 16-3, which shows how Itanium performance outstrips other methods.

The results are clear: by using the power of Intel Itanium^[36] microprocessors, clients can attain the twin goals of fast performance with the reliable security features equipped for an enterprise environment. In addition, HP-UX's roots in UNIX^[37] allow it to provide the robust stability needed for mission-critical applications. Finally, the flexibility of HP-UX 11i can easily interface with Web application (application servers) and data center infrastructures.

^[36] Intel and Itanium are registered trademarks of Intel Corporation or its subsidiaries in the United States and other countries.

^[37] UNIX is a registered trademark of The Open Group.