Issue with iperf3 and UDP

Tools
#1

Hi Experts,

I’m facing this issue with iperf3 and UDP:

I am running below command in :

Client side:

  • perf3 -i 1 -u -c 10.100.0.4 -b 100m -t 0 -p 5005

Server Side or UE side:

  • perf3 -s -p 5005

But I am seeing only at UE side:

[ 5] 0.00-1.00 sec 0.00 Bytes 0.00 bits/sec 0.000 ms 0/0 (-nan%)
[ 5] 1.00-2.00 sec 0.00 Bytes 0.00 bits/sec 0.000 ms 0/0 (-nan%)
[ 5] 2.00-3.00 sec 0.00 Bytes 0.00 bits/sec 0.000 ms 0/0 (-nan%)
[ 5] 3.00-4.00 sec 0.00 Bytes 0.00 bits/sec 0.000 ms 0/0 (-nan%)
[ 5] 4.00-5.00 sec 0.00 Bytes 0.00 bits/sec 0.000 ms 0/0 (-nan%)
[ 5] 5.00-6.00 sec 0.00 Bytes 0.00 bits/sec 0.000 ms 0/0 (-nan%

Any suggestion would help here. Same command is working fine with iperf2.

#2

There is a bug with iperf3 on UDP.

Use 3.1

#3

Hi dear, Thanks@

But both at server and client I have iperf3 3.1…

#4

My mistake, sorry.
I was having it with 3.1 → try the latest 3.0.

#5

Actually I am using magic iperf application at UE side.

Is there any other app I can install at UE and check this behavior?

#6

5Gmark app.
Try this to perform mobile performance test at network level.

5GMARK – App Google Play, Apple Store

#7

Can we run iperf3 in 5Gmark application at UE side?

#8

No I think.
5G mark is more user friendly.
Iperf3 is the best, and you want to create a bash script to run the file at once and log data.
Iperf3 also provide you json type output which is better actually.

#9

nuttcp is another network test tool, similar to iperf2 and iperf3, that has a number of unique features.

And https://play.google.com/store/apps/details?id=com.nperf.tester. This is also a great tool similar to 5G mark.