Cpu Utilization - HP Rp7410 - Server - 0 MB RAM Performance Manual

cpu utilization

100%
90%
80%
70%
60%
50%
40%
30%
20%
10%
0%
xmit
recv
bd
This chart shows the total amount of CPU utilization for 1, 2, and 4 Gigabit Ethernet cards in an 8-way
rp7410. With two NICs running at link rate with receive only traffic, the rp7410 still had approximately
55% of its CPU cycles available for other applications. When supporting two NICs with transmit only
traffic running at link rate, the rp7410 had over 73% of its CPU capacity available for other applications.
A total of four Gigabit Ethernet NICs can be operated at full link rate carrying unidirectional data without
driving the CPU utilization to the limits of its capacity.
With two NICs running at link rate and carrying bi-directional traffic, the rp7410 had over 31% of its
CPU cycles available for other applications. As illustrated in the above chart, when four NICs are
carrying bi-directional traffic the CPU utilization is very close to 100%. This indicates that the rp7410 is
reaching the limit of its CPU capacity. Bi-directional traffic consumes more of the system's resources
than either transmit-only or receive-only traffic. Therefore, as the total volume of bi-directional traffic
increases, the demand on system resources increases faster than it does for unidirectional traffic.
This increasing load on the CPUs causes the limiting of bi-directional throughput as the number of cards
increases, as shown on the previous chart.
CPU Utilization on 8-Way rp7410 for Gigabit Ethernet
1
12.82%
28.17%
38.91%
Gigabit Ethernet Performance in rp7410 Servers
2
26.90%
45.13%
68.76%
Num ber of Cards
4
63.96%
91.16%
99.87%
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