General Information

iperf allows testing of network throughput. It requires you to install iperf on a source and destination system.


  • Distro(s): Enterprise Linux 6

Install iperf

  • Add the EPEL repo.
  • Install iperf on the “client” and “server” system.
    yum install iperf

Performance Test

Note: Transfers are from client to server, ie: upload transfer. (Unless doing bi-directional tests)

  • The client transfers data to the server, and the server throws away the data.

  • Start iperf on the “server” system.
    iperf -s
    • Specify what port iperf listens on with the '-p <port>' option.
      iperf -s -p 1337
    • Specify an address for iperf to listen on (-B for bind) - useful if you ened to specify a 10 Gb interface
      iperf -s -B -p 1337
  • Run the test from the client
    • Basic test with default settings
      iperf -c <server-ip>
    • Basic test, specify server listening port
      iperf -c <server-ip> -p 1337
    • Bi-directional test
      iperf -c <server-ip> -p 1337 -d
    • Custom Test: Bandwidth format in MBytes/sec (-f M), show max segment size and MTU (-m), pause 2 seconds in between reports (-i 2), transmit for 30 seconds (-t 30).
      iperf -c <server-ip> -p 1337 -f M -m -i 2 -t 30

  • linux_wiki/iperf.txt
  • Last modified: 2019/05/25 23:50
  • (external edit)