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Questions tagged [iperf]

Iperf is a network testing tool for performance and tuning that can create TCP and UDP data streams and measure the throughput of a network that is carrying them.

Iperf is a network testing tool for performance and tuning that can create TCP and UDP data streams and measure the throughput of a network that is carrying them.

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How to control bit rate/bandwidth in netperf? Equivalent to -b option in iperf?

I am trying to test the throughput of my network using netperf utility and want to send data at different bit rates. There is -b option in iperf to control this but I am looking for same option in netperf.
Swapnil
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iperf showing error - iperf[1] : syntax error ')' unexpected

I have successfully compiled the code and generated the executable file. But when i try to execute commands in android application am getting the error iper[1]:syntax error ')' unexpected.Please suggest any solutions. Thanks in advance. I have done…
Eby Cloudins
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How to capture results of iperf continuously using exec() in java?

I want to capture results of IPerf3 program and send them to GUI of JAVA swing, and represent them by chartpanel. But I encoutered as a serious problem. There is a snippet of code I've ever used. process = Runtime.getRuntime().exec(command); //…
goblin techies
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How to make Paramiko run non-standard commands like iPerf

I want to send a command between two laptops using ssh and using Paramiko to do it. Commands such as ls and echo are working as expected, but when using non-standard commands like iPerf I get the following error: ['bash: iperf: command not…
user35510
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Ending iperf3 server

based off this answer, how can this be done in iperf3. Going through the iperf3 man page and documentation, it seems that the -t option no longer exists. What other ways can I implement to kill the server process after some duration or if no…
user2883071
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Extracting upload and download bandwidth from iperf2 output

I use iperf2. iperf2 has been set in the server mode on STM32 board. Client mode is used on Windows PC. I'd like to receive transfer bandwidth statistics in upload and download terms. iperf -c 192.168.21.25 -d -t 5 -f m: [220] local 192.168.21.1…
ilya
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i have installed iperf3 when i use iperf3 with server mode i am getting the following error libcrypto.so.1.1 not found

i have installed iperf3 in fedora 15 . When I used "iperf -u -s -V" the following error is shown "iperf3: error while loading shared libraries: libcrypto.so.1.1: cannot open shared object file: No such file or directory" I have tried to install…
Vinayak Hosamani
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How can I generate traffic from trace file in mininet?

I have trace file name dec-pkt which have 6 columns as follow: timestamp of packet arrival. For the first packet in the trace, this is the raw tcpdump timestamp. For the remaining packets, this is the offset from the integer part of that first…
Jade Manapee
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Live iPerf Output Printed to HTML with PHP/Ajax

I've been working on a web interface for iPerf and it's going pretty well. My goal is to have the output of the commands be streamed live on the page. It works for iPerf2 commands but when I run iPerf3, it only shows the output once the entire test…
SterlingB
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Bind failed: Address already in use while using iperf

I want to simulate traffic of 5 hosts in mininet. In such a way that, host2 , host 3, host4 and host5 send tcp traffic using iperf to host1. I want to send iperf traffic at the same time. (in parallel) I wrote a shell code to do that. Here is my…
Saeid
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Iperf3 Optimum Settings For Testing General Browsing Performance

Iperf3 is a great tool and is seen as the gold standard in terms of testing network performance however its enormous scope of functionality makes it difficult to configure for specific use cases. What are the best settings to configure at both…
Paula Livingstone
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DoS attack using iperf in the network

I would like to do a TCP DoS attack using iperf in my simulated network. (I use mininet). The only code that I could find is the following command for making UDP burst traffic in my network which is not relevant. (host1: 10.0.0.1) iperf -s (host2:…
Queen
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iperf trafic generator via 2 NIC's using Dispatch Proxy

I am attempting to run a test between two machines running windows 7 connected to an access point (isolated from any other network). I need to split traffic from a traffic generator like Iperf3 between 2 Network Interfaces (WIFI) connected to the…
Gui
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What algorithm iperf3 use under the hood to measure the bandwidth and latency between end to end points in a network infrastructure?

I am trying to learn an iperf tool, which is a handy tool to measure the bandwidth and latency of two endpoints on a network. I am wondering which algorithm does iperf/iperf3 use under the hood to measure the latency and bandwidth. I go through the…
shining
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Increasing concurrent connections on ubuntu for iperf3 server

I'm trying to run a iperf3 client (ubuntu server 17.04 VM) to server(ubuntu server 17.04 VM) test for maximum parallel streams possible with the -P option. Currently have reached a max of ~1022 streams before it will terminate with buffer overflow…
coolkab
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