HP-UX IPSec vA.03.00 Performance and Sizing White Paper

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SHA1, and ESP-AES-HMAC-SHA1) with 128 to 32768-byte TCP send buffers. In addition, CPU
utilization for raw IP data transmission (data transmission without HP-UX IPSec enabled) is measured
as a baseline.
• Service demand
Service Demand is the measure of how much of the CPU is used to transfer a unit of data, measured
in microseconds of CPU required to transmit one kilobyte (KB) of data. The smaller the measured
service demand, the more efficiently the system is operating. Service demand is measured for the
HP-UX IPSec transfer types listed above with 128 to 32768-byte TCP send buffers. In addition,
service demand for raw IP data transmission (data transmission without HP-UX IPSec enabled) is
measured as a baseline.
Test system configuration
The data reported in the following sections was derived from tests performed between two single dual-
core (2-way) systems with the following configuration:
• HP Integrity BL860c Server Blade
• 1x Itanium 9100 series processor 1.67 GHz, 2 logical processors per socket
• Memory: 8161 MB (7.97 GB)
• 1x 1000 Base-T card, operating with 1000 Mbps link speed (using 100/1000 Mbps switch)
• HP-UX IPSec Version A.03.00
• OS version: HP-UX B.11.31 (HP-UX 11i v3)
• netperf version 2.4.1