Test length can be controlled by specifying time (-t seconds) or number of buffers (-n buffers). By default, iperf runs a 10 second test, measuring total bytes transmitted (e.g., 270 megabytes) and the resulting estimated bandwidth (e.g., 226 Mbps).
If you cannot do this, you do not have iperf installed correctly. For example, start your iperf server by executing iperf -s at the command prompt, then open another window to start your iperf client:Ģ This just shows that you can measure throughput for traffic sent through the loopback address ( ) on a single computer. Running iperf By default, iperf clients establish a single TCP session to the iperf server listening to Port 5001 at the specified destination. If you want to see how routing through upstream switches or across a WAN impacts performance, associate your iperf server to a central AP and let your iperf client associate with APs at various locations. For example, if you want to measure best case performance between co-located Wi-Fi clients, associate your iperf client and server to the same AP. Again, make sure that iperf traffic traverses the entire path you intend to test. This can be helpful to measure client-to-client performance if you plan to support streaming video or voice calls between wireless clients. Alternatively, iperf server and client can both be installed on Wi-Fi laptops. If your goal is to isolate bottlenecks, co-locate your iperf server with real-world application servers, so that a comparable network path is traversed. If your goal is to measure AP performance, place your iperf server on the same LAN as the AP, connected by Fast or Gigabit Ethernet. This is representative of a typical application flow between Wi-Fi client and wired server.
Tamosoft throughput test vs iperf install#
Next, install iperf on one or more Wi-Fi laptops - these will be your clients. To measure Wi-Fi performance, you probably want to install iperf on an Ethernet host upstream from the access point (AP) under test - this will be your server. A Win32 iperf installer can be found at NLANR, while a Java GUI version (JPerf) is available from SourceForge. iperf is available as open source or executable binaries for many operating systems, including Win32, Linux, FreeBSD, MacOS X, OpenBSD, and Solaris. To use iperf, you must install two components: an iperf server (which listens for incoming test requests) and an iperf client (which launches test sessions). iperf can be run over any kind of IP network, including local Ethernet LANs, Internet access links, and Wi-Fi networks. When used with UDP, iperf can also measure datagram loss and delay (aka jitter). Getting started iperf was developed to simplify TCP performance tuning by making it easy to measure maximum throughput and bandwidth.
Tamosoft throughput test vs iperf how to#
Here, we describe how to quantify network performance using iperf, a simple, readily-available tool that measures TCP/UDP throughput, loss, and delay. 1 Measure wireless network performance using testing tool iperf By Lisa Phifer, Many companies are upgrading their wireless networks to n for better throughput, reach, and reliability, but getting a handle on your wireless LAN's (WLAN's) performance is important to ensure sufficient capacity and coverage.
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