HP-UX IPSec vA.02.00 Performance and Sizing White Paper

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Appendix C: Test Methodology
The netperf utility was used to measure HP-UX IPSec performance. The netperf utility can measure the
throughput and CPU utilization for one-way and two-way systems. You can then use the data collected
to estimate future performance demand and provide a platform that can scale appropriately for the
customer's future demand expectations.
Methods of Measurement
The SA time measurements are based on timestamps from the HP-UX network logging and tracing
utility, as traced in the kernel space. The IKE protocol is implemented in user space by the ikmpd
daemon. The timestamps for ikmpd activity have a granularity of seconds, and the timestamps in the
kernel space have a granularity of milliseconds. The resolution for SA measurement in milliseconds is
sufficient.