iperf3 to measure network bandwidth between linux servers

 1.Install iperf3 on both server and client:

    download:  https://iperf.fr/iperf-download.php#fedora


    Install with: rpm -ivh iperf3-3.1.3-1.fc24.x86_64.rpm

2.Run server to listen on port 5201 with below command:

   iperf3 -s -f K


Example:

 /]# iperf3 -s -f K

-----------------------------------------------------------

Server listening on 5201

-----------------------------------------------------------

Accepted connection from 10.10.10.1, port 44246

[  5] local 10.10.1.1 port 5201 connected to 10.10.10.1 port 44248

[ ID] Interval           Transfer     Bandwidth

[  5]   0.00-1.00   sec  3.01 GBytes  3157621 KBytes/sec

[  5]   1.00-2.00   sec  4.20 GBytes  4399773 KBytes/sec

[  5]   2.00-3.00   sec  2.20 GBytes  2305199 KBytes/sec

[  5]   3.00-4.00   sec  2.08 GBytes  2184224 KBytes/sec

[  5]   4.00-5.00   sec  2.65 GBytes  2775254 KBytes/sec

[  5]   5.00-6.00   sec  2.95 GBytes  3095611 KBytes/sec

[  5]   6.00-7.00   sec  2.81 GBytes  2942424 KBytes/sec

[  5]   7.00-8.00   sec  2.82 GBytes  2951992 KBytes/sec

[  5]   8.00-9.00   sec  3.64 GBytes  3815794 KBytes/sec

[  5]   9.00-10.00  sec  2.41 GBytes  2527937 KBytes/sec

[  5]  10.00-10.04  sec  76.0 MBytes  2078139 KBytes/sec

- - - - - - - - - - - - - - - - - - - - - - - - -

[ ID] Interval           Transfer     Bandwidth

[  5]   0.00-10.04  sec  0.00 Bytes  0.00 KBytes/sec                  sender

[  5]   0.00-10.04  sec  28.8 GBytes  3012197 KBytes/sec                  receiver

-----------------------------------------------------------

Server listening on 5201


3.For client run below command:

   ~]# iperf3 -c 10.10.10.2 -f K

Connecting to host 172.17.38.42, port 5201

[  4] local 10.10.10.2 port 44248 connected to 10.10.10.1 port 5201

[ ID] Interval           Transfer     Bandwidth       Retr  Cwnd

[  4]   0.00-1.00   sec  3.17 GBytes  3320810 KBytes/sec    0   1.56 MBytes

[  4]   1.00-2.00   sec  4.12 GBytes  4317820 KBytes/sec    0   1.87 MBytes

[  4]   2.00-3.00   sec  2.21 GBytes  2319258 KBytes/sec    0   1.87 MBytes

[  4]   3.00-4.00   sec  2.06 GBytes  2160896 KBytes/sec    0   1.87 MBytes

[  4]   4.00-5.00   sec  2.70 GBytes  2835078 KBytes/sec    2   1.44 MBytes

[  4]   5.00-6.00   sec  2.92 GBytes  3065520 KBytes/sec    0   1.69 MBytes

[  4]   6.00-7.00   sec  2.80 GBytes  2937884 KBytes/sec    0   1.75 MBytes

[  4]   7.00-8.00   sec  2.85 GBytes  2989876 KBytes/sec    0   1.81 MBytes

[  4]   8.00-9.00   sec  3.61 GBytes  3788754 KBytes/sec    0   1.87 MBytes

[  4]   9.00-10.00  sec  2.38 GBytes  2497104 KBytes/sec    0   1.94 MBytes

- - - - - - - - - - - - - - - - - - - - - - - - -

[ ID] Interval           Transfer     Bandwidth       Retr

[  4]   0.00-10.00  sec  28.8 GBytes  3023283 KBytes/sec    2             sender

[  4]   0.00-10.00  sec  28.8 GBytes  3023283 KBytes/sec                  receiver



 

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