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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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Iperf3: Why there is no sender traffic at server site

I tried to take the test between my two machines and the output is as below: Server listening on 5201 ----------------------------------------------------------- Accepted connection from 192.168.100.113, port 41749 [ 5] local 192.168.100.114 port…
Jen Lin
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Python - Documenting Test Results via HTML

This is definitely the most vague question I have asked on SO but I hope it will not be too heavily frowned upon. I recently started a project for the company I am interning at this summer. The task is to test traffic between two servers using the…
Abdall
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How to generate traffic faster on iperf?

I'm using a TCP implementation that creates multiples subflows and I'm trying to test it with iperf, the problem is the server doesn't fill all the subflows so I can't test it properly. My question is: How can I get iperf to generate (more) traffic…
dgr
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Low UDP throughput comparing to iperf UDP performance

When measuring UDP throughput between Windows PC and Zynq-based device by iperf2 tool, I am getting around 950 Mb/s over dedicated 1Gb Ethernet link. However, when using my own UDP application on PC I am getting only around 50 Mb/s, which is…
Irie
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Iperf tool installation error on linux

error while insallation the iperf tool in linux could not find the correct pacakage libiperf.so.0(64bit) error failed dependencies libiperf.so.0(64bit) is needed by the iperf -3.1.2-1.1.x86_64 When trying to install iperf on the linux…
vinod maya
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How can I use iperf and grep both in a python script?

I tried many methods described but its not working with me. Can anybody please explain how can I use this in a single python script using the subprocess? iperf -c 10.0.0.1 -i 1 -t 100 | grep -Po '[0-9.]*(?= Mbits/sec)'
Amigo
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Designing a proxy with non-blocking pipe forwarding to another server

I have written a proxy which also duplicates traffic. I am trying to duplicate network traffic to a replica server which should receive all the inputs and also process all the requests. However only the responses on the main server are visible to…
tsar2512
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Need a solution to synchronize data received from iPerf and GPS

Recently, I am working on car-to-X communication and using two On-Board-Units (OBU). It's possible to read and monitor the GPS data on both modules with gpsd, gpsd clients and also I'm able to measure the network performance with iPerf. To do that…
Abdullah Al Mamun
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Run multiple exe at once in Python and read output separate

I need to run multiple instances of iperf.exe tool at once (in parallel) in Python. I am using pyqt4 to create an app, which will run multiple instances of iperf.exe by a single click and need to read back the output of each instance separately.…
eecs
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How to write an IPERF Android application

I want to create an "iperf 3" Android application. How can I do it? Should I use the NDK? or should i compile it for ARM devices and then move it through adb? Thanks
Gioviiz
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iperf 2.0.5 TCP bidirectional test output out of order

I am using iperf version 2.0.5 to test TCP bandwidth between two machines (Both running Linux Debian 8). I am using dual test to measure bidirectional bandwidth with help of -d, --dualtest option, and I have a python wrapper that grabs test result…
ali
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iperf error:only position independent executables (PIE) are supported

I am using iperf for testing to android Application. The Server and client side communications are configured well. when i send the command from the client side, it shows the following error. error: only position independent executables (PIE) are…
balamurugan
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iperf can't connect from remote machine

I am trying to measure the network bandwidth between two cloud virtual machines, using iperf. Machine A runs iperf -s and machine B iperf -c . This doesn't work, while executing iperf -c localhost in machine A…
rawrintheclouds
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Consistent increases and decreases in iPerf TCP throughput

I am using iPerf to try and test the Wi-Fi performance on my router. I have set up two computers, a HP Zbook (Client) and a Macbook Pro (Server), to demonstrate this connection. The client is connected directly to the router via LAN and the server…
Sasha Naidoo
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AWS network latency is high

I provisioned two i2.8xlarge VMs on AWS, which should have 10G network as it said on the portal. But when I run iperf3 test (with "-P 64", which means run with 64 TCP connections) on the VMs, it just gave me ~5Gbps throughput. At the same time when…
Howard Shane
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