HP-UX IPFilter Performance White Paper

10
Outbound TCP CPU Utilization
Figure 5 and Table 5 show CPU utilization rates for systems processing 512, 1024, and 8192 byte
outbound packets.
Figure 5 Outbound TCP CPU Utilization
Outbound TCP CPU Utilization
0
5
10
15
20
25
30
35
40
512 1024 8192
Packet Size (Bytes)
CPU Utilization (%)
No IPFilter
IPFilter without Rules
IPFilter with Rules
Table 5 Outbound TCP CPU Utilization
Packet Size CPU Utilization
without IPFilter (%)
CPU Utilization with IPFilter
and No Rules (%)
CPU Utilization with IPFilter
Rules (%)
512 25.5 31.34
(22.90% increase)
33.8
(32.55% increase)
1024 19.24 21.14
(9.88% increase)
24.98
(29.83% increase)
8192 12.09 14.16
(17.12% increase)
16.65
(37.71% increase)