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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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is QUIC fair to TCP

I have a question regarding TCP and QUIC. For a project I have to test how TCP fair is QUIC. My Setup are two Virtual Machines one with nginx Quic implementation and one where I use nginx TCP. I have to generate random Files and download them with…
Codegirl
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log in adb shell "interactive mode" and "non-interactive mode"

I'm writing script to run iperf on linux device accessible via adb. From a terminal, when I run the command: adb shell iperf -c ...... I get the log of the command 50 s after the command starting. inconvenient: during 50 s you are not sure that…
Laurent G.
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Autoconf with ENV vars after a rebuild

I am trying to get iperf3.2 to build using ENV vars for dirs like prefix. This works fine on one machine when i run ./configure using paths like $MYDIR, etc... The problem is after i run configure, and commit the files to my git. When i clone to a…
RookieBeotch
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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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checking network bandwidth with iperf

I am trying to measure network bandwidth with iPerf: I opened a server on my PC (-s) and used another laptop as a client(-c ip_address -P N), it worked well with 1,10,100 clients (I simulated multiple clients through -P N (N- number of…
Ilyos Ibrokhimov
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How to embed a custom header in packets that are sent by iperf command?

I am an iperf newbie. I want add custom header with minimal data in the packets that are sent by iperf tool. Is it even possible? If yes, can someone please enlighten me :)
Gurupad Hegde
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Powershell - Try Catch - Non Powershell Errors

Is it possible to create a try-catch that catches a non-Powershell cmdlet error? Example Error: iperf3: error - unable to connect to server: Connection timed out I want to catch that error and then try a different server for redundancy. Thank you…
Jonathan-Ball
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iperf2 latency is a two way or one way latency

iperf2 (version 2.0.9) reports latency in its output as shown below. Is it a two-way latency or one-way latency measurement ? Server listening on UDP port 5001 with pid 5167 Receiving 1470 byte datagrams UDP buffer size: 208 KByte (default) [ 3]…
Hanamantagoud
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How can I send downlink Iperf data over USB tethered latop with Android phone?

I have tethered my laptop with an Android phone. I am using RNDIS in the USB. I can send UL iperf data over the net. But I cannot send DL data to the laptop. DL data can be pushed to the phone but not the laptop. Any idea?
FlyingCat2019
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Fluctuating Transferspeeds on Nextcloud

I'm running OMV 4 on an Odroid UX4 with 3 WD Reds (ext4) connected over 2 USB3 ports (1 usb Hub so two drives share a USB3 port) The 3 drives are connected using Unified Filesystem which basically merges the three drives into one. I'm also using…
Vincent Schmid
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mininet_wifi iperf cannot be set

Trying to iperf host and a client (station) with the following code, while the iperf does not work. Anyone? import sys from mininet.log import setLogLevel, info from mn_wifi.net import Mininet_wifi def topology(args): net = Mininet_wifi() info("***…
Itaybz
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Creating traffic from hosts at the same time at Mininet

I have a topology in Mininet-Wifi that has 25 stations and 6 access points and I try to examine load balance performance of the controller. Everything is fine. Code works, load balancer works etc. but it is so boring that start the traffic from…
neurocranium
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Ping works but iperf shows no route to host

We have two machines A and B, they can successfully ping each other, but when running iperf on a client-server mode, if A is in server mode and B is in client mode, B would directly show: connect failed: No route to host. But if A and B swap their…
Kongzhang Hao
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Getting real time output from iperf3 using python's subprocess

This is a follow-on to: Getting realtime output using subprocess I'm trying to use subprocess to capture output from iperf3 in real time (using python 3.6 on windows). The goal is to leave the iperf3 session running continuously and grab the data to…
Selvek
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Mininet topology is not completing the iperf command from the 2 hosts separated by 2 switches

I'm trying to complete the mininet topology exercise from this website https://github.com/mininet/openflow-tutorial/wiki/Advanced-Topology. Basically I have to create a topology like this: h1-----s1---s2----h3 (there is also another host attached to…
ProdigySR
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