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Questions tagged [iperf]

A network test tool.

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BashScripting: How to write a script that starts iPerf on PC boot (Ubuntu 5.13)

As the title suggest, i want to start the command Iperf -s ipxxxx when i boot the pc up headless. i've tried to set the Start Application to run the bash script and also tried to write a Systemctl fix ...
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How to install iperf2 in Ubuntu? [duplicate]

How to install iperf2 tool in Ubuntu 18.04.1? without Internet connection.
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1k views

error iperf3, no route to host

I'm trying to do a speed test with iperf. I've set up two linux virtual machines, running this command on one: iperf3 -s and this command on the other: iperf3 -c <ip-address of server> The ...
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1 vote
1 answer
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Is it possible to run multiple Iperf clients simultaneously?

Is it possible to run iperf clients simultaneously such that if I have 10 servers bound to some machine B, and I have 10 clients on machine A, and all the servers have distinct IP addresses, could I ...
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iperf connection failed

I am very new to networking, and slightly more familiar with Ubuntu CLI. I am trying to test speeds across my home LAN from a laptop connected via ethernet, to a server connected ethernet. They both ...
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2 votes
2 answers
4k views

Start iperdf3 deamon at startup

I want headless server (running Ubuntu Server 19.10) to be listening for iperf3 request constantly, even after reboot. Currently, I can run it on the terminal using the -c and -d flags which runs it ...
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Brand new 802.11ax (WLAN6) laptop is slow on iperf3

I own a brand new Lenovo Thinkpad X1 Extreme Gen 2 my WiFi AP is an AVM Fritz! Box 4040. The AP is capable of 802.11ac. The notebook is certified for Ubuntu 18.04 (see link above). I run Ubuntu 19....
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iPerf :WARNING: did not receive ack of last datagram after 10 tries

client side: iperf -c 10.0.1.5 -u Client connecting to 10.0.1.5, UDP port 5001 Sending 1470 byte datagrams, IPG target: 11215.21 us UDP buffer size: 9.00 KByte (default) [ 28] local 10.0.1.2 port ...
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who kill my iperf on remote Ubuntu 14.04?

I have a remote server with Ubuntu 14.04 and iperf 2.0.5. And also have a local device, which is use to test the throughput between local and remote server. But a strange thing is sometimes the iperf ...
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1 vote
0 answers
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Inconstant Bandwidth despite Bandwidth Limitation in VirtualBox

In VirtualBox, I have two Ubuntu 18.04 VMs running on an Ubuntu 18.04 host. My target is to simulate network traffic between the two VMs (one as a Server, one as a Client). Therefore I set the VM ...
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Perf does not annotate .c files called by Rust

I am using perf to profile a rust application which calls some .c files. I want to annotate the .c functions. However in the perf report i can find only rust code annotated. I have compiled the ...
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Perf top - warning perf not found for kernel [closed]

I downloaded perf program for Ubuntu using this command: sudo apt-get install linux-tools-common linux-tools-generic But when I try perf top it gives me this WARNING: perf not found for kernel 4.9....
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WARNING: did not receive ack of last datagram after 10 tries

I try making network performance measurement using iperf in UDP option. I perform all the operations in Ubuntu Terminal. I have two computer and I have number of interfaces on each of my computers. ...
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1 vote
2 answers
189 views

Can I assign any IPv4 address I want to a network interface in Ubuntu?

Title basically reveals what I want to learn. Theoretically, I can assign an IPv4 address via ifconfig <interfaceName> <IP address>, for example ifconfig myInterface 172.16.25.125. However,...
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3 answers
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Cannot find tcpprobe in ubuntu

I want to use tcpprobe to record the state of a TCP connections but I cannot find tcpprobe in /proc/net. Is tcpprobe not present by default? tcpprobe
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