iperf v3.13 releases: TCP, UDP, and SCTP network bandwidth measurement tool

iperf3: A TCP, UDP, and SCTP network bandwidth measurement tool

iperf is a tool for active measurements of the maximum achievable bandwidth on IP networks. It supports the tuning of various parameters related to timing, protocols, and buffers. For each test, it reports the measured throughput/bitrate, loss, and other parameters.

This version sometimes referred to as iperf3, is a redesign of an original version developed at NLANR/DAST. iperf3 is a new implementation from scratch, with the goal of a smaller, simpler code base, and a library version of the functionality that can be used in other programs. iperf3 also has a number of features found in other tools such as nuttcp and netperf but were missing from the original iperf. These include, for example, a zero-copy mode and optional JSON output. Note that iperf3 is not backwards compatible with the original iperf.

Primary development for iperf3 takes place on CentOS Linux, FreeBSD, and macOS. At this time, these are the only officially supported platforms, however, there have been some reports of success with OpenBSD, NetBSD, Android, Solaris, and other Linux distributions.

iperf3 is principally developed by ESnet / Lawrence Berkeley National Laboratory. It is released under a three-clause BSD license.

Changelog v3.13

• Notable user-visible changes

  • fq-rate (PR #1461, Issue #1366), and bidirectional flag (Issue #1428, PR #1429) were added to the JSON output.

  • Added support for OpenBSD including cleaning up endian handling (PR #1396) and support for TCP_INFO on systems where it was implemented (PR #1397).

  • Fixed bug in how TOS is set in mapped v4 (PR #1427).

  • Corrected documentation, such as updating binary download links and text (Issue #1459), updating version on iperf3 websites, and fixing an incorrect error message (Issue #1441).

  • Fixed crash on rcv-timeout with JSON logfile (#1463, #1460, issue #1360, PR #1369).

  • Fixed a bug that prevented TOS/DSCP from getting set correctly for reverse tests (PR #1427, Issue #638).

• Developer-visible changes

  • Getter and setter are now available for bind_dev (PR #1419).

  • Added missing getter for bidirectional tests (PR #1453).

  • Added minor changes to clean up .gitignore and error messages (#1408).

  • Made sure configure scripts are runnable with /bin/sh (PR #1398).

  • Cleaned up RPM spec, such as adding missing RPM build dependencies, dropping EL5 and removing outdated %changelog (PR #1401) to make.

  • Added a fix for a resource leak bug in function iperf_create_pidfile(#1443).

Install

git clone https://github.com/esnet/iperf.git

./configure; make; make install

Use

Copyright (c) 2014-2018 The Regents of the University of California, through Lawrence Berkeley National Laboratory (subject to receipt of any required approvals from the U.S. Dept. of Energy)