Low UDP throughput with Iperf v2.1.4 (dated 2021-08-19)

A means to measure network responsiveness and throughput

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Low UDP throughput with Iperf v2.1.4 (dated 2021-08-19)

Forum: General Discussion

Creator: Amit M

Created: 2021-09-27

Updated: 2021-09-27

Amit M - 2021-09-27

Hi Bob,

With Iperf 2.1.4 :
We are getting low throughput in UDP in direct and reverse direction.
UDP bandwidth is set as 5 Gbps for UDP.But throughput received is approx 272Mbps only.
IPERF_214 UDP (Gbps): ~0.272 (Max 0.454)

Similarly in reverse mode - UDP throughput achieved is about 100Mbps
IPERF_214 REVERSE UDP (Gbps): ~0.097 (Max 0.322)

Using Iperf2.1.1 on the same setup :
We could achieve better result in UDP, approx 1.49 Gbps
IPERF_211 UDP (Gbps): ~1.49 (Max 1.77)

Low throughput in Udp reverse using Iperf 2.1.1 was already known issue here (https://sourceforge.net/p/iperf2/tickets/116/)

Can this issue of low UDP throughput in straight and reverse direction with Iperf v2.1.4 be looked into?
Thanks.

AmitM

Last edit: Amit M 2021-09-27

IPERF_211_UDP_DL.png

IPERF_214_UDP_DL.png

REVERSE_IPERF_214_UDP_DL.png

If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
- Robert McMahon - 2021-09-27
  
  Hi Amit,
  
  I can take a look. Can you create a ticket for this? I just returned from a few weeks vacation and my work queue filled up a bit. I tend to use the ticket system for this type of issue.
  
  Thanks,
  Bob
  
  If you would like to refer to this comment somewhere else in this project, copy and paste the following link:

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