perfSONAR User Q&A and Other Discussion

[Bruce Mah <>]

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ESnet (Energy Sciences Network) is proud to announce the availability
of iperf 3.7.  This release adds a long-requested simultaneous
bidirectional test capability, enabled using the --bidir flag.
Timekeeping now uses the clock_gettime(3) interface.  Several
improvements were made to the libiperf APIs.  Finally a number of bugs
have been fixed, and minor enhnacements made.  More information can be
found in the release notes, which can now be found in the RELNOTES.md
file in the iperf3 distribution.

iperf 3.7 should be fully backward-compatible with prior iperf3
releases, that is, iperf 3.7 clients and servers should interoperate
correctly with all 3.x clients and servers.  Note however that users
running iperf 3.7 with the bwctl utility (perhaps as a part of a
perfSONAR 3.x installation) need to ensure they are using bwctl
version 1.6.3 or newer.

iperf3 is a tool for measuring the maximum TCP, UDP, and SCTP
throughput along a path, allowing for the tuning of various parameters
and reporting measurements such as throughput, jitter, and datagram
packet loss.  It is fully supported on Linux, FreeBSD, and macOS.  It
may run on other platforms as well, although it has not received the
same attention and testing.  Note that iperf3 is not compatible with,
and will not interoperate with, version 2 or earlier of iperf.

The source code for iperf 3.7 is available at:

https://downloads.es.net/pub/iperf/iperf-3.7.tar.gz

SHA256 hash:

d846040224317caf2f75c843d309a950a7db23f9b44b94688ccbe557d6d1710c  
iperf-3.7.tar.gz

iperf3 is freely-redistributable under a 3-clause BSD license.  More
information can be found in the LICENSE file inside the source
distribution.

Additional documentation for iperf3 can be found at:

https://software.es.net/iperf

More information about iperf3 (including the issue tracker, source
code repository access, and mailing list) can be found on the iperf3
page on GitHub at:

https://github.com/esnet/iperf

User questions can go to the iperf users list (which is more-or-less
shared between iperf2 and iperf3):



Mailing list information and archives can be found at:

https://lists.sourceforge.net/lists/listinfo/iperf-users

The mailing list for iperf3 development is:



To see the list archives or join the mailing list, visit:

http://groups.google.com/group/iperf-dev

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