User's Manual

Performance Test Configuration
80-VT321-1 B 15 Qualcomm Confidential and Proprietary
MAY CONTAIN U.S. AND INTERNATIONAL EXPORT CONTROLLED INFORMATION
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5.4 Throughput performance test tools 1
There are a multitude of throughput performance test tools available that can be used to
characterize throughput performance over a Qualcomm WCN1320-based wireless link.
Qualcomm tests extensively with two of these tools: Chariot (available for purchase from Ixia)
and IPerf (free). Configuration considerations for each are provided below.
5.4.1 Ixia Chariot 6
When using Chariot, a Chariot endpoint must be installed on any PC that will source or sink
traffic (PC1 and PC2, in this case). A Chariot console is required on any PC that has IP
connectivity to PC1 and PC2 (it can be on PC1, PC2, or a third PC with IP connectivity).
To obtain maximum throughput results, the following configuration options Chariot are
recommended:
 Select the High Performance Throughput script.
 Run bidirectional traffic with at least 10 endpoint pairs in each direction of traffic (i.e., 10
endpoint pairs from PC1 to PC2 and 10 endpoint pairs from PC2 to PC1).
 Tests can be run in Batch mode (as opposed to Real-Time) to prevent Chariot control traffic
from loading the wireless link; however, the impact of running in Real-Time mode is
negligible.
 Take a look at Qualcomm’s recommendation for best performance in Section 5.1.
5.4.2 IPerf 19
When using IPerf, one PC must be configured as the client and one must be configured as the
server. For maximum performance, we recommend configuring two servers on PC2, and two
clients on PC1, and running a bidirectional throughput test between each client server pair.
An example command-line configuration is:
 On PC1:
iperf –c 192.168.1.101 –p 6000 –w 128k –i .5 –d –t 30 –P 10
iperf –c 192.168.1.101 –p 6001 –w 128k –i .5 –d –t 30 –P 10
 On PC2:
iperf –s -p 6000 –w 128k –i .5
iperf –s –p 6001 –w 128k –i .5