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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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Why does Runtime.getRuntime().exec() emit the exception as No such file or directory

I've built iperf after downloading it. And then, I pushed iperf executable file built at Android project as like app/src/main/jniLibs (including arm64-v8a, armeabi-v7a, x86, and x86_64). I've tried to rename that executable file as like…
Dennis
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iperf3 returns higher bandwidth than the maximum theoretical

Please see the output JSON file produced with the iperf3 client below, why do we get 10002834326.213295 bits_per_second on the first interval while running iperf3 over a 10GbE network? Also, the convention is to convert bits_per_second into Gbps…
Sebastian Luna-Valero
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Problems after Installing iperf 3.7.0

I was just installed the latest version of iperf3 in Ubuntu 18.4. First I cloned the files from iperf's GitHub repository and proceeded wit the installation process: ./configure make make install I ran make check and all tests passed. But when I…
olg32
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Calculate the time delay between send and received packets using iperf3 and tcpdump?

I have written a bash code to run iperf3 and capture packets. Then i have extracted frame time from the .pcap file using tshark. The time is in the following format Jan 27, 2020 13:22:12.683438000 CET. Now i want to calculate the time difference…
Nehal
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Is there a way to create a point to point (1 server per client) connection using Nginx?

Hi I am setting up a server with multiple docker containers that are all running an application (Iperf3) that can only host one client at a time for a bandwidth test. Using Nginx I would like to provide a dedicated link for a few seconds until a…
David Lia
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How to implement iperf module for Bandwidth monitoring in this python chatroom?

https://iperf.fr/iperf-doc.php https://iperf.fr/ //server.py import socket import select import sys from thread import * server = socket.socket(socket.AF_INET, socket.SOCK_STREAM) server.setsockopt(socket.SOL_SOCKET,…
Akshat Jain
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MSYS2, autoconf and SetProcessAffinityMask

I'm trying to compile iperf3 3.6 under MSYS2. ./configure (autoconf) reports "checking for SetProcessAffinityMask... yes", but at compile time I get following related error iperf_api.c:67:10: fatal error: Windows.h: No such file or directory …
OTLabs
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iperf connects but does not report output

I am using iperf to test network bandwidth between two Ubuntu 16.04.2 hosts (10.0.0.1 and 10.0.0.51). I ran "iperf -s" on 10.0.0.51 and then ran "iperf -c 10.0.0.51 -T 10" on 10.0.0.1. I do see the connection establishment (i.e. local 10.0.0.51 port…
NKD
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Do I need use the same version of iperf3 in client and server?

I was testing our equipment TCP performance using iperf3, WiFi, powerline and ethernet. Do I need use the same version in both client and server so that I won't see weird issue or performance drop? Current I'm using server: iperf 3.1.3 client: iperf…
Jeffrey Haibo Wang
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iPerf3 as a ssh.exec command using paramiko in Python

The following script unable to execute any output. I think there might be problem in - ssh.exec_command("iperf3 -c 192.168.234.2"). Can anyone help me to sort out the problem? While using iperf instead of iperf3 then it executes correctly. import…
Abdullah Al Mamun
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64 bytes PPS throughput using iperf3

I tested PPS throughput with and without 64 bytes using PC to PC with ubuntu 14.04. Using the command as follow server - iperf3 -s client with 64 bytes iperf3 -u -c -b 1000M -t -2 -l 64 **-P 6** (OR) iperf3 -u -c -b 1000M -t…
Phyuthe
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Python script that reads iperf3 output

I am writing a python scripts that reads the output of iperf3 client and fetches the required data in yml. Basically the script reads the output table and it has to capture the receiver's values for interval, transfer and bandwidth. To an extent the…
DevOps_Guy_1903
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iperf server on windows using python

This may not necessarily be a Python related issue but I'm hoping someone can point me in the right direction. I'm trying to start an iperf3 server on a Windows system using Python. In my code I have import subprocess iperfserver =…
MightyMouseZ
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iperf3 design GUI

I am designing GUI for iperf3.exe. When I run iperf3.exe, the text box appears after it finishes the process. I want to read output while doing the process. I try async method and task but all the time process finish then read output. I can read…
Psydk00
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Unable to make connection between between two VPS using udp2raw

Issue with securely connecting two VPS instances using udp2raw There are 2 Ubuntu 22.04 VPS instances that are required to get connected via a secure udp2raw TCP tunnel, VPS-A is assigned as a server and VPS-B is the client, both of the instances…
Sina S.
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