This is how to use iperf!

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JAMESMTL
DD-WRT Guru


Joined: 13 Mar 2014
Posts: 856
Location: Montreal, QC
PostPosted: Wed Sep 09, 2015 17:35    Post subject: This is how to use iperf! Reply with quote
Its iperf3 that's included with the most recent build. To run use iperf3 -s etc.
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Vishwa
DD-WRT User


Joined: 05 Mar 2014
Posts: 193
Location: Edmonton, AB
PostPosted: Wed Sep 09, 2015 18:01    Post subject: Reply with quote
Thanks for the tip. I was looking for iperf and thought it was left out. Will try the iperf3 today.
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Gaudi
DD-WRT Novice


Joined: 08 Mar 2007
Posts: 10
PostPosted: Tue Nov 17, 2015 0:13    Post subject: Reply with quote
Am trying to run iperf3 as described, but it is not available in the build.


Code:
==========================================================

     ___  ___     _      _____  ______       ____  ___
    / _ \/ _ \___| | /| / / _ \/_  __/ _  __|_  / / _ \
   / // / // /___/ |/ |/ / , _/ / /   | |/ //_ <_/ // /
  /____/____/    |__/|__/_/|_| /_/    |___/____(_)___/

                       DD-WRT v3.0
                   http://www.dd-wrt.com

==========================================================


BusyBox v1.23.2 (2015-09-11 00:59:39 CEST) built-in shell (ash)

root@DD-WRT Client:~# uname -a
Linux DD-WRT Client 2.6.24.111 #26917 Fri Sep 11 00:59:58 CEST 2015 mips GNU/Linux
root@DD-WRT Client:~# iperf
-sh: iperf: not found
root@DD-WRT Client:~# iperf3
-sh: iperf3: not found


Can you comment how to install iperf3 on the router, if it is not already bundled?
Am using dd-wrt.v24-27805_NEWD-2_K2.6_mega-nv60k on a Linksys E4200 v1 router.

Thank you.
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JAMESMTL
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Joined: 13 Mar 2014
Posts: 856
Location: Montreal, QC
PostPosted: Tue Nov 17, 2015 1:46    Post subject: Reply with quote
ummm. looks like this thread was split off from another as I was answering someone's question at the time.

Anyhow from what you've posted I suspect your running an older router with less storage and iperf3 is not included to keep FW size down.
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Gaudi
DD-WRT Novice


Joined: 08 Mar 2007
Posts: 10
PostPosted: Tue Nov 17, 2015 1:52    Post subject: Reply with quote
JAMESMTL wrote:
ummm. looks like this thread was split off from another as I was answering someone's question at the time.

Anyhow from what you've posted I suspect your running an older router with less storage and iperf3 is not included to keep FW size down.


That is strange, as it has 8 mb flash, and 64 mb ram.
Firmware is 7.6 mb, so for such a small command as iperf there should be plenty of space.

Code:
Memory
Total Available 57.5 MB / 64.0 MB
Free 38.9 MB / 57.5 MB
Used 18.6 MB / 57.5 MB
Buffers 2.3 MB / 18.6 MB
Cached 6.0 MB / 18.6 MB
Active 1.5 MB / 18.6 MB
Inactive 1.2 MB / 18.6 MB

Space Usage
NVRAM 36.83 KB / 60 KB
CIFS (Not mounted)
JFFS2 (Not mounted)
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rpaulcox
DD-WRT Novice


Joined: 06 Apr 2016
Posts: 1
Location: East Africa
PostPosted: Wed Apr 06, 2016 11:20    Post subject: Finding iperf on dd-wrt Reply with quote
On my version of dd-wrt (v24-sp2) iperf (version 2) is found in /usr/sbin. Change to this directory and one can run iperf. While I have yet to test iperf, at least it is installed in this version of dd-wrt.

Below are the details showing how I got to iperf.

DD-WRT v24-sp2 std (c) 2012 NewMedia-NET GmbH
Release: 02/11/13 (SVN revision: 20675)
==========================================================

____ ___ __ ______ _____ ____ _ _
| _ \| _ \ \ \ / / _ \_ _| __ _|___ \| || |
|| | || ||____\ \ /\ / /| |_) || | \ \ / / __) | || |_
||_| ||_||_____\ V V / | _ < | | \ V / / __/|__ _|
|___/|___/ \_/\_/ |_| \_\|_| \_/ |_____| |_|

DD-WRT v24-sp2
http://www.dd-wrt.com

==========================================================


BusyBox v1.20.2 (2013-02-11 05:10:57 CET) built-in shell (ash)
Enter 'help' for a list of built-in commands.

root@cipher-cat:~# cd /usr/sbin
root@cipher-cat:/usr/sbin# iperf -v
iperf version 2.0.5 (08 Jul 2010) pthreads
root@cipher-cat:/usr/sbin#
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Brimmy
DD-WRT User


Joined: 29 Mar 2015
Posts: 398
PostPosted: Wed Apr 06, 2016 19:46    Post subject: Re: This is how to use iperf! Reply with quote
JAMESMTL wrote:
Its iperf3 that's included with the most recent build. To run use iperf3 -s etc.


Hi,

new to iperf, can i use this tool on a wzr1750dhpd with these specs on BS r29346?

Memory
Total Available503.3 MB / 512.0 MB
Free448.1 MB / 503.3 MB
Used55.2 MB / 503.3 MB
Buffers4.9 MB / 55.2 MB
Cached13.5 MB / 55.2 MB
Active14.1 MB / 55.2 MB
Inactive7.4 MB / 55.2 MB

Space Usage
NVRAM36 KB / 64 KB
CIFS(Not mounted)
JFFS2(Not mounted)

Also, i saw this post about iperf http://www.wi-fiplanet.com/tutorials/print.php/3658331 and in the post the writer, Carla Schroder, stated that if i run this code admin@router1:~$ iperf -s user@remotepc:~$ iperf -c router1.yourdomain.com i should be all set to run/use iperf on any router with ddwrt. Would i save this code to Firewall/Startup/RunCommand or other?

Can you tell me what i should look for, maybe a new setting in the ddwrt webgui, if i succeed in getting iperf to run?
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JAMESMTL
DD-WRT Guru


Joined: 13 Mar 2014
Posts: 856
Location: Montreal, QC
PostPosted: Wed Apr 06, 2016 20:16    Post subject: Reply with quote
As your wzr1750dhpd runs an ARM DDWRT build, iperf3 is included.

To run as server, run the following from CLI
iperf3 -s

To run as client, run the following from CLI
iperf3 -c 192.168.1.2

where 192.168.1.2 is target IP or alternatively hostname


You could start iperf3 server as a daemon via startup script but I dont see the point.

iperf3 -s -D
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Brimmy
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Joined: 29 Mar 2015
Posts: 398
PostPosted: Wed Apr 06, 2016 21:15    Post subject: Reply with quote
Thanks James, got it running, saw no increase in my CPU's speed but my bandwidth was cut in half, so i think this is not for me as i need every kilobit of bandwidth as i only have a 15/2mbps line.

I thought it would get like lower ping/jitter but it was the same.

Thanks anyway!
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coletrain
DD-WRT User


Joined: 01 Oct 2016
Posts: 172
Location: St.louis, MO USA
PostPosted: Sun Oct 25, 2020 20:05    Post subject: Reply with quote
JAMESMTL wrote:
As your wzr1750dhpd runs an ARM DDWRT build, iperf3 is included.

To run as server, run the following from CLI
iperf3 -s

To run as client, run the following from CLI
iperf3 -c 192.168.1.2

where 192.168.1.2 is target IP or alternatively hostname


You could start iperf3 server as a daemon via startup script but I dont see the point.

iperf3 -s -D


your the man!

Mod edit 10.19.23 kp69

Please find and read: How to run iperf3

Topic locked to prevent another unnecessary necro-bump.
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