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Questions tagged [iperf3]

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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Make a noise or alert when iperf drops connection or has a bad packet rate

Help me be lazy. My task at work requires me to monitor the output of an iperf script to check if the connection drops or the packet rate gets too high. I do not want to have to stare at the screen for hours on end and would rather get alerted when…
France Hull
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How to use iperf to measure the network parameters of a container（virtual firewall） between two containers in docker？

I would like to ask how to use iperf to measure the network parameters of the container between the iperf-client and iperf-server container. I want to measure the network parameters of an intermediate container (e.g. vFW), but every time I generate…
jonesGuo
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iperf3 What these results mean is it good/bad?

I have Xiaomi Router with openwrt installed and i used iperf to test my connection between my pc and router, i want to know is these results good or not?(i dont think its good, seems to be a lot of loss) Realtek PCIe GbE Family Controller Xiaomi Mi…
Flexy404
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Iperf3 get server output in real time for UDP measurement

I'm testing my network using iperf3 on a Ubuntu VM. I want to measure the data package loss for udp. I've found the argument --get-server-output so that I can get what the server receives exactly. iperf3 -u -c hostname -p 30070 --get-server-output…
dk13
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iperf3 stop running after 300 sec with error - unable to send control message : Broken pipe

Please help me, I have a problem of IPerf3 stop running after 300 sec (5 mins), when I want to use Iperf3 for testing for at least 24 hours. The error said iperf3: error - unable to send control message: Broken pipe I use IPerf3 version 3.9 on…
chatchamon phoojaroenchanachai
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iperf3: unable to connect to server: Connection timed out

It is necessary to check the connection speed, but it does not work. Virtual machines ping each other, but when iperf3 is started and I get an error for some waiting time
12iq
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iPerf3 on wsl can be a client but cannot be a server

I run iperf from my computer on linux subsystem on windows, and transmist to a mobile phone that can accept iPerf. Both devices are on same network, and on iPerf3. My computer has version iPerf3.9. I can use the computer as a client and the mobile…
mimm_mm
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Why when i use iperf3 at ubuntu between client-server it mesaured the bitrate and not the bandwidth?

When i try to run iperf3 at ubuntu between client-server mode, it shows me the bitrate? I cant measure the Bandwidth with iperf3? Only with iperf? I run the ONOS controller with a fattrew topology, and i tried to measured the bandqidth with iperf3,…
Iwannis Koulouras
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IPERF3 test 2 SPF+ port on same computer

I have the pc which one have 2 SFP+ ports, I want to make bandwidth test between these 2 SFP+ port. I connected SFP+ ports with fiber cable. There was linked. When I started IPERF test with binding my result not true because IPERF not use cable. It…
MMT
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how i can get the json results file from iperf3 when used mininet?

I'm trying to write a simple code in Python that create a simple topology of a client-server with a bridge for running iperf3 between them, and get the results.(In particular the json results file). I'm trying somethings like that: from…
Yair Shunim
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Python iperf3 getting "unable to send cookie to server: "

I have a simple python script that continuously runs iperf3. Currently, only the first request works. The second request throws an error 'unable to send cookie to server' This is on an ubuntu 20 server The script is as…
Tommie Jones
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syntax error when running iperf through adb

I am trying to execute iperf through adb shell, however I am getting following error: syntax error: unexpected 'newline' here are the steps: push android compiled iperf binary to /data/local/tmp enter adb shell, go to /data/local/tmp…
Naveen Rawat
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Iperf3 client reporting zero data even even though server receives traffic

I'm trying to do some throughput measurements for a azure VM ubuntu server using iperf3.(version iperf 3.11). In the server side I run the following command iperf3 -s -V -p xxxx On the client side when I give the following command for 5 second test…
dk13
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Omnet++ : How to use iperf tool at omnetpp?

I want sent UDP packet for 10 seconds from host to server. Then after 10 seconds I want to calculate how many packages are dropped. By professor suggest iperf tool. He is not sure though if it is possible to use iperf tool with omnetpp. My question…
Tahmid Alavi
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iperf3 udp silent gap from sending side

I use iperf3.7 to measure the throughput of a system that is capable of around max 4 Gbps. The iperf3 server is running on a Linux machine. I start the traffic with this command on the client side with the following flags, -R option to let the…
Nicke
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