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Iperf (view source)

Revision as of 16:29, 9 March 2022

1,671 bytes added ,  16:29, 9 March 2022
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Iperf is a modern alternative for measuring TCP and UDP bandwidth performance,
 
Iperf is a modern alternative for measuring TCP and UDP bandwidth performance,
 
allowing the tuning of various parameters and characteristics.  
 
allowing the tuning of various parameters and characteristics.  
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 +
https://github.com/esnet/iperf
    
Features:  
 
Features:  
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=== Installation ===
 
=== Installation ===
−
You need to activate the [[Dag]] reposity before installing this contrib.<br />
     −
see [[dag|dag repository]] <br />
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Install direct from upstream repos
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yum install iperf3
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{{Note box| Some distros carry both iperf v2 and iperf3}}
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=== Usage ===
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To use iperf you need  a server and a client
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On the 'server' run
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iperf3 -s
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On the client run:
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iperf3 -c ip.of.iperf.server
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Output:
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<pre>
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Connecting to host 192.168.11.1, port 5201
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[  5] local 192.168.11.100 port 46926 connected to 192.168.11.1 port 5201
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[ ID] Interval          Transfer    Bitrate        Retr  Cwnd
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[  5]  0.00-1.00  sec  113 MBytes  952 Mbits/sec    0  1.11 MBytes
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[  5]  1.00-2.00  sec  111 MBytes  933 Mbits/sec    0  1.11 MBytes
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[  5]  2.00-3.00  sec  111 MBytes  933 Mbits/sec    0  1.11 MBytes
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[  5]  3.00-4.00  sec  111 MBytes  933 Mbits/sec    0  1.11 MBytes
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[  5]  4.00-5.00  sec  112 MBytes  944 Mbits/sec    0  1.11 MBytes
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[  5]  5.00-6.00  sec  111 MBytes  933 Mbits/sec    0  1.11 MBytes
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[  5]  6.00-7.00  sec  111 MBytes  933 Mbits/sec    0  1.17 MBytes
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[  5]  7.00-8.00  sec  111 MBytes  933 Mbits/sec    0  1.17 MBytes
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[  5]  8.00-9.00  sec  111 MBytes  933 Mbits/sec    0  1.17 MBytes
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[ 5]  9.00-10.00  sec  111 MBytes  933 Mbits/sec    0  1.17 MBytes
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- - - - - - - - - - - - - - - - - - - - - - - - -
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[ ID] Interval          Transfer    Bitrate        Retr
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[  5]   0.00-10.00  sec  1.09 GBytes  936 Mbits/sec    0            sender
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[  5]  0.00-10.00  sec  1.09 GBytes  933 Mbits/sec                  receiver
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iperf Done.
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</pre>
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Note that by default iperf3 uses port 5201.
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We can change that:
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iperf3 -p 11111 -s
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iperf3 -p 11111 -c ip.of.iperf.server
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{{Note box|This will be OK on your local LAN but you will need to modify firewalls to use outside your LAN which is beyond the scope of this HowTo.}}
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Be very careful to note the differences between MBs and Mbs particularly when checking your ISP bandwidth.
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8 Mbs = 1 MBs
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A Gigabit network is likely to have around 950Mbits/sec
   −
This contrib can be found in the [http://wiki.contribs.org/Dag Dag] repository.
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===Uninstall===
−
To install this contrib get shell access as root user and issue the following command:
  −
yum install iperf --enablerepo=dag
      +
yum remove iperf3
    
----
 
----
 
[[Category: Howto]]
 
[[Category: Howto]]
 
[[Category:Administration:Monitoring]]
 
[[Category:Administration:Monitoring]]
Retrieved from "https://wiki.koozali.org/Special:MobileDiff/40883"

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