[Iperf-users] iperf3-3.0.2 is available

SPECIAL NOTE: The iperf3 project, including the source code repository, issue tracker, and wiki, has been moved to GitHub. ESnet (Energy Sciences Network) is proud to announce the public release of iperf3 3.0.2. This version is a maintenance release that fixes a number of bugs, many reported by

[Iperf-users] iperf-3.0.3 is available

ESnet (Energy Sciences Network) is proud to announce the public release of iperf-3.0.3. This version is a maintenance release with a few bug fixes and enhancements, notably: * The structure of the JSON output is more consistent between the cases of one stream and multiple streams. * The

[Iperf-users] iperf-3.0.5 is available

-BEGIN PGP SIGNED MESSAGE- Hash: SHA512 ESnet (Energy Sciences Network) is proud to announce the public release of iperf-3.0.5. This version is a maintenance release with a few bug fixes and enhancements, notably: * A timing issue which caused measurement intervals to be wrong with

[Iperf-users] iperf-3.0.6 is available

-BEGIN PGP SIGNED MESSAGE- Hash: SHA512 ESnet (Energy Sciences Network) is proud to announce the public release of iperf-3.0.6. This version is a maintenance release with a few bug fixes and enhancements, notably: * Several problems with the -B option have been fixed. Also, API calls

Re: [Iperf-users] gettimeofday

If memory serves me right, Bob (Robert) McMahon wrote: What about the idea of supporting bursts (vs single packets) and only calling gettimeofday() for each burst? I think this effectively supports your gofast idea as defined by the burst size. Opened issue #210 in the iperf3 GitHub issue

[Iperf-users] iperf 3.0.9 is available

-BEGIN PGP SIGNED MESSAGE- Hash: SHA512 ESnet (Energy Sciences Network) proudly announces the public release of iperf-3.0.9. This version includes a fairly important bug fix for a situation in which attempting a UDP test with pathologically large (and illegal) packet sizes could put the

Re: [Iperf-users] Understanding Iperf

If memory serves me right, Bob (Robert) McMahon wrote: I am not sure iperf is the thing to use here. [snip] That thought had occurred to me also. Maybe the OP could describe in a little more detail what he wants to accomplish? Bruce. You probably should measure the actual traffic in

[Iperf-users] iperf-3.1b1 is available

-BEGIN PGP SIGNED MESSAGE- Hash: SHA512 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.

[Iperf-users] iperf-3.1b3 is available

-BEGIN PGP SIGNED MESSAGE- Hash: SHA512 ESnet (Energy Sciences Network) is proud to announce iperf-3.1b3, the third 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.

[Iperf-users] iperf-3.1.1 is available (resend, GPG-signed)

-BEGIN PGP SIGNED MESSAGE- Hash: SHA512 ESnet (Energy Sciences Network) announces iperf-3.1.1, the first point/bugfix release from the iperf 3.1 codeline. iperf-3.1.1 fixes a few bugs in iperf-3.1 (some of which were also present in earlier releases), retaining the same functionality.

Re: [Iperf-users] compiling iperf3 for ARM using ubuntu

If memory serves me right, divya polavaram wrote: > Hi All, > > Am trying to cross compile iperf3 for ARM on ubuntu. > I have compiled the iperf binary. However, when i push it to my device, > it shows the following error > > msmxxx_64:/ # iperf -v > /system/bin/sh: /system/bin/iperf: not

Re: [Iperf-users] iperf3 --forceflush release

s running > remotely over ssh and the timeliness of interval reports back to the ssh > client is required. > > Bob > > > > > > On Wed, May 24, 2017 at 1:14 PM, Bruce A. Mah <b...@es.net > <mailto:b...@es.net>> wrote: > > If memory serves me

[Iperf-users] iperf3 update, June 2017

tion sites such as Stack Overflow. For bug reports (where you think iperf3 is doing something wrong) and enhancement requests (what can it do better), please file an issue. Thanks for your interest and support of iperf3, Bruce Mah Software Engineering Group ESnet signature.asc Descriptio

Re: [Iperf-users] iperf3 simple test punch my network?

If memory serves me right, Periko Support wrote: > Running simple test in a 1Gb network, about 200 meters distance over fiber. > > side a iperf -s > side b iperf -c IP-side-A. > > between runs if I have a ping running between side A and side B, I lost > packets. > > This is normal or my

Re: [Iperf-users] unsubscribe

Please send a message with the subject line "unsubscribe" to iperf-users-requ...@lists.sourceforge.net (you sent to the list itself, not the request address). Bruce. If memory serves me right, Hunter Moricle wrote: > > > -Original Message- > From:

Re: [Iperf-users] [perfsonar-user] Iperf3 + connect to google cloud VM

[Replying to a message that was cross-posted to four different mailing lists...making the reply go to just one of them and BCC-ing the others so they know it's being taken care of.] If memory serves me right, Arman Mohsin wrote: > How can we connect an iperf3 client from local machine to an

Re: [Iperf-users] iperf 3.1.3 TCP throughput issue

If memory serves me right, Kaliaperumal, Rajesh wrote: > Hi all, > >   > > Iperf version – iperf 3.1.3 > >   > > My set up:  iperf server (GCE) <=> Gateway VM (GCE) <=> IPsec server > (GCE) <=> WAN <=> Laptop with IPSec Client > >   > > *My test:* > > Server – /iperf3 -s / > >

Re: [Iperf-users] iperf3: abrupt interval issue

e have an enhancement request open to use something better. Bruce. > On Tue, May 8, 2018 at 9:16 AM, Bruce A. Mah <b...@es.net > <mailto:b...@es.net>> wrote: > > If memory serves me right, Bob McMahon wrote: > > Hi Nikita, > > > > I don't k

Re: [Iperf-users] iperf3

If memory serves me right, Harsh Patel wrote: >   >  i want to know you have any API or SDK for iperf3 TCP UDP Testing . or > its free or paid please contact me  > i need to implement in my andorid project. so please help me iperf3 is open source and licensed with a BSD license. The whole thing

Re: [Iperf-users] iperf 3.1.3 TCP throughput issue

treams isn't necessarily going to scale the throughput linearly. Bruce. > On 5/9/18, 4:02 PM, "Bruce A. Mah" <b...@es.net> wrote: > > If memory serves me right, Kaliaperumal, Rajesh wrote: > > Hi all, > > >

Re: [Iperf-users] iperf3: abrupt interval issue

> > But with bandwidth of ~45M (which is the max > it is showing) then it starts giving time > interval issues. > > One more thing, I tried with iperf as well >

Re: [Iperf-users] iperf3: abrupt interval issue

If memory serves me right, Nikita Gupta wrote: > Hi team, > > While checking network performance using iperf3, I'm facing interval > issue at client end. Below are the logs: > > [  5]   0.00-1.05   sec  11.2 MBytes  88.7 Mbits/sec    0   42.4 > KBytes   > [  5]   1.05-2.01   sec  10.0 MBytes 

Re: [Iperf-users] use of --set-mss flag in iperf3

If memory serves me right, Mohanraj B wrote: > Hi Experts/users, > > I have a query on the usage of --set-mss flag for TCP streams in iperf3. > > For the test purpose I have used the iperf3 public > servers(https://iperf.fr/iperf-servers.php) > Used wireshark to verify the generated traffic from

Re: [Iperf-users] How does iperf UDP test count lost packets?

If memory serves me right, Bob McMahon via Iperf-users wrote: > speaking for iperf2 , the > iperf client writes a sequence number in every packet.   The server then > calculates the lost packets per the sequence number gaps. > > For iperf2, there is no

[Iperf-users] iperf3 support, issues

Hi iperf3 users... I've been on vacation the past few weeks, during which a number of issues and pull requests got filed for iperf3. I'll be looking at these as a part of digging myself out from my backlog. Thanks for your patience... Bruce. signature.asc Description: OpenPGP digital

Re: [Iperf-users] Optimizing iPerf for achieving max transmission rate with UDP tests

If memory serves me right, Fran Terlingo (fterling) wrote: > IPerf Experts, > >   > > I am performing tests between an iPerf 3.1.3 client running on a Linux > Ubuntu Virtual machine on a VMware ESX host and a similar setup with the > iPerf 3.1.3 server VM running on a separate ESX server. The

Re: [Iperf-users] Having problems with specifying different network interface for iperf3

If memory serves me right, Marcel wrote: > I'm trying to do an iperf3 test using a Huawei ME909 wwan modem on a > raspberry pi zero w. > > I use the command as iperf3 -c 12.12.12.12 -t 3 -p 5201 -B 12.34.56.78 > > where 12.12.12.12 is the ip of the server machine and 12.34.56.78 is the > ip of

Re: [Iperf-users] Bandwidth option (-b) doesn't seem to work

If memory serves me right, Michael Fox wrote: > The iperf3 bandwidth option doesn't seem to work (or perhaps I'm not using > it correctly). > > iPerf3 version 3.1.3 on Ubuntu server and Windows client. > > I'm trying to test radio links at various bandwidths, ranging from 32 Kbps > to 400 Kbps,

Re: [Iperf-users] iperf3 and 100Gb

If memory serves me right, Jeffrey Lane wrote: > Hi all, > > I have what is kind of a silly question, but who has some experience > testing 100Gb with iperf3? > > I just wanted to validate something with iperf3 to see if it is reasonable. > > With a single process running, the most I've been

Re: [Iperf-users] Bandwidth option (-b) doesn't seem to work

If memory serves me right, Michael Fox wrote: > How would I find the latest/current Windows binaries and Ubuntu packages?  > > https://iperf.fr/iperf-download.php and > https://iperf.fr/iperf-download.php#ubuntu-command only has up to 3.1.3 iperf.fr is a third-party Web site, so we (ESnet,

Re: [Iperf-users] Problem installing v3.5 on Ubuntu 16.04

If memory serves me right, Michael Fox wrote: > I tried building and installing v3.5 on Ubuntu 16.04. I normally use only > packages. So bear with me if I ask dumb questions: > > I followed the instructions in the "INSTALL" file: > ./configure (no problems) > make

Re: [Iperf-users] UDP and QoS tests in Iperf3

he tests are using UDP they'll just blast out packets at whatever rate you specify regardless of whether the path is actually capable of supporting it. You need to turn down the bitrate on both tests (especially the first). What scenario are you trying to simulate anyway? Bruce. > W dniu 2018

Re: [Iperf-users] UDP and QoS tests in Iperf3

If memory serves me right, Kasper Biegun wrote: > currently I'm working on project connected with testing UDP throughput > for different QoS values. To get the needed results I have to use Best > Effort (0x70), Background (0x28), Voice (0xc0) and Video (0xb8) traffic > at the same time. I have

Re: [Iperf-users] TCP IPERF testing is stopped working during experiment

If memory serves me right, Soe Ye Htet wrote: > I have a problem with using TCP IPerf testing on my simple wireless > network. There are one server and one client. The command of " iperf -s > -i 10" is applied at the server side and the command of "iperf -c > -t 1 -i 10" is applied at the

Re: [Iperf-users] Understanding --zerocopy , --udp-counters-64bit, --pacing-timer

ter is used). Larger values here reduce overheads, but result in more bursty traffic, which can create losses particularly with UDP tests. Less of an effect with TCP because the traffic has to go through TCP's flow control and congestion control algorithms. Hope this helps, Bruce. > On 9/13/1

Re: [Iperf-users] IPERF NOT PROVIDING THE REQUIRED BANDWIDTH

kets and computing an effective throughput based on those. You don't have to use one of these tools to measure performance. You could for example have a customer try to download a large file with a known size and have him/her report how long it takes; from the size and time you can compute the throughput

Re: [Iperf-users] Iperf3 win32 build

If memory serves me right, Richard Pasztor wrote: > is there any official build of any recent iperf3 for win32 platform > (32/64bit ) I can download? > > https://iperf.fr/iperf-download.php#windows > --> only a 2yr old build (v3.1.3 from 2016 june) is offered, and they > seem to be the only

Re: [Iperf-users] Iperf3 win32 build

ailable for you? Bruce. > On Tue, Sep 11, 2018 at 9:52 PM, Bruce A. Mah <mailto:b...@es.net>> wrote: > > If memory serves me right, Richard Pasztor wrote: > > > is there any official build of any recent iperf3 for win32 platform > > (32/64bit ) I can d

Re: [Iperf-users] Understanding --zerocopy , --udp-counters-64bit, --pacing-timer

If memory serves me right, Mohanraj B wrote: > Can anyone shed light on how to see the effect of using the options > *--zerocopy, --udp-counters-64bit and --pacing-timer* in iperf3. > > So far tried these options but quiet not sure how it's act on the traffic. > > I have 2 directly connected

Re: [Iperf-users] TCP performance Testing Question

If memory serves me right, Christian Sánchez wrote: > Hi Bob, > > Thank you once again for your reply. > > I have actually checked that Iperf2 and Iperf3 behave differently. When > I run the script which uses Iperf3, in the client screen an error > message comes up saying the following:

Re: [Iperf-users] Does iperf3 support MPTCP testing

If memory serves me right, Sreenath Kamatham wrote: > Could you let know if iperfv3 support multipath TCP .  > > I would like to test multipath TCP at scale and would like to explore > options from a test tools perspective There's no explicit support for MP-TCP, so if enabling MP-TCP requires

Re: [Iperf-users] Cygwin1.dll out of date

platform.) But it really sounds like this is an issue with third parties who are building it and making those executables available. There isn't anything we can do at a source code level. Bruce. If memory serves me right, Bob McMahon via Iperf-users wrote: > Bruce Mah at es net is my main iper

Re: [Iperf-users] iperf-3.9 is available

If memory serves me right, Bob McMahon wrote: > With iperf 2 we limit the server read rate per -b or --bandwidth. > Curious to why iperf 3 chose a different flag for this? To be honest, that's the way the pull request came in and it didn't occur to me to do anything different. We could probably

Re: [Iperf-users] iperf-3.8 is available

If memory serves me right, Bruce Mah wrote: > ESnet (Energy Sciences Network) is proud to announce the availability > of iperf 3.8. iperf-3.8 has a regression in its build system, where it's not capable of installing shared libraries. Unfortunately I didn't discover this until after anno

Re: [Iperf-users] iperf-3.10 is available

If memory serves me right, Bob McMahon wrote: > Hi Bruce, > > We used the *%* for both tx and and rx device binding in iperf 2. Just > something to consider for consistency between the two tools. > > *To affect the physical output interface (e.g. dual homed systems) either > use -c % (requires

[Iperf-users] iperf-3.10.1 is available

-BEGIN PGP SIGNED MESSAGE- Hash: SHA512 ESnet (Energy Sciences Network) is proud to announce the availability of iperf 3.10.1. This release fixes a problem where iperf3's configure script didn't perform properly under certain circumstances. This was caused by inadequate testing after

[Iperf-users] iperf-3.10 is available

-BEGIN PGP SIGNED MESSAGE- Hash: SHA512 ESnet (Energy Sciences Network) is proud to announce the availability of iperf 3.10. This release is primarily a bugfix release. A few new features, controlled by various new command-line flags, have been added (--time-skew-threshold, --bind-dev,

[Iperf-users] iperf3 Security Advisory ESNET-SECADV-2023-0002 (Revised)

-BEGIN PGP SIGNED MESSAGE- Hash: SHA512 ESnet Software Security Advisory ESNET-SECADV-2023-0002 Topic: iperf3 Server Denial of Service Issued: 13 September 2023 Revised:15 September 2023 Credits:Jorge Sancho Larraz

Re: [Iperf-users] Iperf 2 as older perception (was Re: iperf3 Security Advisory ESNET-SECADV-2023-0002)

ositions to influence > open source packagings become aware of iperf 2 and now newer versions are > generally better both in features and bug fixes. Also the WiFi alliance > (WFA) <https://www.wi-fi.org/> seems to be standardizing on iperf 2.1.9 for > latency related verifications.

Re: [Iperf-users] Iperf 2 as older perception (was Re: iperf3 Security Advisory ESNET-SECADV-2023-0002)

I've corrected our advisory and sent out a new version. Once again, sorry for giving the wrong impression. I believe this comes from a copy-and-paste of some much earlier text that was written before you started actively maintaining iperf2 (that does not excuse the error, but that's probably

Re: [Iperf-users] iperf3, CVE-2023-38403

Apologies for the late response, but iperf-3.14 and later addresses that issue (iperf-3.15 is current as of this writing). Bruce. If memory serves me right, David Krale wrote: > Data Classification: Internal > > Hello Iperf, > > Is there is a version of iperf3 that addresses the vulnerability

[Iperf-users] iperf-3.15 is available

-BEGIN PGP SIGNED MESSAGE- Hash: SHA512 ESnet (Energy Sciences Network) is proud to announce the availability of iperf-3.15. This release several bug fixes, including one that could cause an iperf3 server process to hang waiting for input on the control connection. For more information,

[Iperf-users] iperf3 Security Advisory ESNET-SECADV-2023-0002

-BEGIN PGP SIGNED MESSAGE- Hash: SHA512 ESnet Software Security Advisory ESNET-SECADV-2023-0002 Topic: iperf3 Server Denial of Service Issued: 13 September 2023 Credits:Jorge Sancho Larraz (Canonical) Affects:iperf-3.14 and

[Iperf-users] Threading and CPU affinity in iperf2/iperf3

Hey Bob-- As we're doing some testing of the multi-threaded iperf3 in various environments, we've observed (not surprisingly) that CPU pinning of threads can have a significant impact on the throughput of tests. Generally we're running on some recent Ubuntu distribution of Linux. I'm trying

Re: [Iperf-users] Threading and CPU affinity in iperf2/iperf3

t;> performance impact. I was kinda of surprised by this. I have no idea why >> there is different behavior between 2 & 3 per this. >> >> Bob >> >> On Fri, Sep 22, 2023 at 10:29 AM Bruce A. Mah wrote: >> >>> Hey Bob-- >>> >>> As we're d

Re: [Iperf-users] Threading and CPU affinity in iperf2/iperf3

! Bruce. If memory serves me right, Bob McMahon wrote: > Iperf2 doesn't support zero copy. Are your tests using that? Did you try > Iperf2 on your system? I can add an affinity option if you find it helpful. > > Bob > > On Mon, Sep 25, 2023, 7:14 AM Bruce A. Mah wrote: &g

[Iperf-users] Multi-threaded iperf3 public beta 1

We're pleased to announce the PUBLIC BETA availability of a multi-threaded version of iperf3. iperf3 was originally designed as a single-threaded program. Unfortunately, as network speeds increased faster than CPU clock rates, this design choice meant that iperf3 became incapable of using the

[Iperf-users] iperf-3.14 is available

-BEGIN PGP SIGNED MESSAGE- Hash: SHA512 ESnet (Energy Sciences Network) is proud to announce the availability of iperf-3.14. This release contains a fix for a memory allocation issue that could cause a remote crash of iperf3. For more information, please see:

[Iperf-users] iperf-3.16 is available

-BEGIN PGP SIGNED MESSAGE- Hash: SHA512 ESnet (Energy Sciences Network) is proud to announce the release of iperf-3.16. This version of iperf3 introduces a major change in the way that parallel tests (specified with the -P/--parallel flag) are handled. iperf3 now uses a separate thread

[Iperf-users] iperf-3.16-beta1 is available

-BEGIN PGP SIGNED MESSAGE- Hash: SHA512 ESnet (Energy Sciences Network) is proud to announce the first beta release of iperf-3.16. This version of software, to be released soon as iperf-3.16, uses a multi-threaded implementation that uses a separate thread (pthread) for each test stream.