Testing LAN Performance
SUN Host Interface and Protocol Processing Performance (100 Mbps)
This measurement was performed using the ERG
JTAP Test Network. The traffic generator
was initiated in the ERG Ultra 1 workstation with 100 Mbps interface (coloured
purple in the ERG JTAP Network Plan). The
transmitted packet rate was adjusted to generate a 100 Mbps output load.
- The traffic generator was configured to forward packets to the IP loop
back interface, and a traffic sink process also initiated on the same machine.
This configuration allows the user to measure the performance of the internal
IP loop back (i.e. protocol processing) without any involvement of the
output interface.
- An 'arp' entry was made manually for a phantom machine connected to
the ERG JTAP network (139.133.217.0), and the traffic generator configured
to transmit packets to the phantom machine through the 100 Mbps interface.
The number of successfully transferred packets were measured using the
'netstat' UNIX command. This configuration allows the user to measure the
forwarding rate of the 100 Mbps interface of the Ultra workstation. The
results are tabulated in the collumn named 'Output rate from 100'
UDP Transport Throughput (Mbps) |
| 100 / loopback driver |
100 / output rate |
| <= 100 Mbps |
68.5 Mbps |
PC Host Interface and Protocol Processing Performance (100 Mbps)
To be done.
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