Bruce A. Mah | 1 Jul 00:42 2015
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perf-3.1b2 is available

ESnet (Energy Sciences Network) is proud to announce iperf-3.1b2, the
second beta release from the iperf 3.1 codeline.  This beta release is
intended for testing by early adopters, and should not be packaged in
any operating system distributions.  We're particularly interested in
reports of any regressions from the 3.0 codeline; we aim for the
official iperf 3.1 release to be at least as good with respect to code
quality as the most recent 3.0.x release.

iperf-3.1 adds support for tests using SCTP on FreeBSD, Linux, and
Solaris.  In addition, it improves support for some optional features
on FreeBSD, and in general increases compatibility with a number of
other operating systems.  Finally, a number of minor bug fixes and
enhancements have been added.

This second beta release addresses a packaging issue that broke builds
from the source tarball (!).

More information on changes can be found in the RELEASE_NOTES file in
the source distribution.

iperf3 is a tool for measuring the maximum TCP and UDP performance
along a path, allowing for the tuning of various parameters and
reporting measurements such as throughput, jitter, and datagram packet
loss.

The original iperf was implemented by NLANR / DAST.  Version 3 is a
complete reimplementation, with the goals of a smaller, simpler code
base, and a library that can be used by other programs.  It also adds
new functionality, such as CPU utilization measurements, zero copy TCP
support, and JSON output.  Note that iperf3 clients and servers are
(Continue reading)

Bruce A. Mah | 22 Jun 20:08 2015
Picon

iperf-3.1b1 is available


ESnet (Energy Sciences Network) is proud to announce iperf-3.1b1, the
first beta release from the iperf 3.1 codeline.  This beta release is
intended for testing by early adopters, and should not be packaged in
any operating system distributions.  We're particularly interested in
reports of any regressions from the 3.0 codeline; we aim for the
official iperf 3.1 release to be at least as good with respect to code
quality as the most recent 3.0.x release.

iperf-3.1 adds support for tests using SCTP on FreeBSD, Linux, and
Solaris.  In addition, it improves support for some optional features
on FreeBSD, and in general increases compatibility with a number of
other operating systems.  Finally, a number of minor bug fixes and
enhancements have been added.

More information on changes can be found in the RELEASE_NOTES file in
the source distribution.

iperf3 is a tool for measuring the maximum TCP and UDP performance
along a path, allowing for the tuning of various parameters and
reporting measurements such as throughput, jitter, and datagram packet
loss.

The original iperf was implemented by NLANR / DAST.  Version 3 is a
complete reimplementation, with the goals of a smaller, simpler code
base, and a library that can be used by other programs.  It also adds
new functionality, such as CPU utilization measurements, zero copy TCP
support, and JSON output.  Note that iperf3 clients and servers are
not compatible with, and will not interoperate with, earlier versions
of iperf.
(Continue reading)

Gabriel L. Somlo | 10 Apr 17:20 2015
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iperf 2.0.8 'make install' error

Hi,

I'm packaging iperf-2.* in Fedora, and in the process of upgrading
to 2.0.8 (from the old 2.0.5) I noticed that 'make install' fails:

...
Making install in man
make[1]: Entering directory '/tmp/FOO/iperf-2.0.8/man'
make[2]: Entering directory '/tmp/FOO/iperf-2.0.8/man'
make[2]: Nothing to be done for 'install-exec-am'.
 /usr/bin/mkdir -p '/tmp/FOO/share/man/man1'
 /usr/bin/install -c -m 644 iperf.1 iperf.1 '/tmp/FOO/share/man/man1'
/usr/bin/install: will not overwrite just-created ‘/tmp/FOO/share/man/man1/iperf.1’ with ‘iperf.1’
Makefile:292: recipe for target 'install-man1' failed
make[2]: *** [install-man1] Error 1
...

The problem originates here (lines 256-257 of man/Makefile.in):

man_MANS = iperf.1
dist_man_MANS = $(man_MANS)

Then, the "install-man1" target attempts to install files from *both*
man_MANS and dist_man_MANS, essentially ending up with "iperf.1 iperf.1"

This happened in 2.0.5 as well, AFAICT, except now the makefile tries
to be "smarter" and do it all from a single invocation of
/usr/bin/install, whereas 2.0.5 used to invoke /usr/bin/install for
each file, thus hiding the problem.

(Continue reading)

onkar kundargi | 27 Mar 11:24 2015
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how to calculate latency in iperf 2.0.8

Hello sir ,
               can you please tell me command to calculate latency ???


thanks
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onkar kundargi | 25 Mar 08:33 2015
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bandwidth parameter

hello sir,

how can i fix bandwidth for tcp as there is no option available for iperf.
consider scenario  if i need 23.00 GB bandwidth at output. so which parameter should i tunned in input format of iperf.
eg. iperf --client what options i need to consider to get 23.gb bandwidth at output



thanks
onkar
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onkar kundargi | 19 Mar 12:58 2015
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difference betwwen uperf and iperf ??

hello sir


what is exact difference between uperf and iperf??


thanks
onkar
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onkar kundargi | 13 Mar 10:47 2015
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Fwd: input to consider for jitter and throughput





Hello ,
           May i know command to consider throughput as input and also jitter as input



thanks

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Bob (Robert) McMahon | 5 Feb 18:10 2015

iperf2.0.9 plans

Hi,

 

Now that iperf 2.0.8 is out I’ve been getting requests for new features and bug fixes.  Here are my current plans:

 

o)  Support write error count to UDP client reports

o)  Add support for TTL information into server reports

o)  Add support for ToS information into server reports

o)  Fix –o (redirect to file) option

o)  Integrate simple IGMP/MLD querier into client to support testing v4/v6 multicast

o) Thoroughly test v6 and fix bugs found

o) Support new traffic option giving packet burst length, interburst gap, and interpacket gap

o) Come up with an analysis technique on the server to report how well the above is able to be reconstructed by the server app

 

Please feel free to contact me if other things are needed.  Also, if you have ideas on analyzing the traffic pattern per the above in a simple way, please share.

 

Bob McMahon

Broadcom Senior Principal SW Engineer, Wi-Fi Division

 

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Kartik Kumar Perisetla | 29 Jan 04:34 2015
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Regarding packet loss in UDP

Hi,

I am looking for a way to measure UDP packet loss between 2 hosts at a given bandwidth. 
I found I could leverage Mininet's iperf method to set l4type to UDP and set bandwidth. However, the response being returned isn't indicating anything about packet loss. 

So could someone please throw some light on how could I get packet loss in this scenario?

Thanks!

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Steve Baillargeon | 27 Jan 17:48 2015
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Public iperf 2 servers?

Hi

Does anyone know if there are any public servers supporting iperf2 (ideally iperf2.0.8)?

 

Any method to check the server iperf version remotely from the client?

 

Thank you

 

Steve B

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ASHISH KUMAR Dhanotiya | 21 Jan 06:51 2015
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Generating traffic

Is there any method through which I can generate traffic at specified time
Thank you
--
Ashish Kumar Dhanotiya

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