Hi Prathik, I am not familiar with the AWS/OCI infrastructure, so I am not sure if my answer will help. However you mention that you are using only one iperf3 client: ` iperf3 -c 10.94.48.31 -P 64 -t 120`. This command sends data only to the server that uses port 5201 (the default port). I assume that on the OCIs you are running 4 iperf3 servers, each using a different port, so only the server that uses port 5201 is active in the test.
To send data to all 4 servers in parallel you need to run 4 clients in parralel, each targeting a different server (using the `--port` option). Alternatively, one client can send 4 streams to one server using the `-P 4` option, but I don't know if that will help. David On Wed, Dec 17, 2025 at 3:08 AM PRATHIK KRISHNAPPA <[email protected]> wrote: > Hello, > > I am currently performing a throughput test to determine the saturation > limit of our Megaport interconnect. We have both AWS and OCI bare metal > servers connected via this interconnect. The test environment consists of 4 > AWS and 4 OCI instances acting as clients and servers respectively (4 x 4 > configuration). > > *Test Setup:* > > - Each AWS instance (*aws1* to *aws4*) is connecting to all four OCI > instances (*oci1* to *oci4*), with each AWS instance targeting a > unique port (5201-5204) on the OCI side. > - *aws1* -> oci1-4 on port 5201 > - *aws2* -> oci1-4 on port 5202 > - *aws3* -> oci1-4 on port 5203 > - *aws4* -> oci1-4 on port 5204 > - From the AWS client side, I am running the following command: > > > > iperf3 -c 10.94.48.31 -P 64 -t 120 > > *Observation:* > The maximum aggregate throughput I’m able to achieve is approximately *3.8 > Gbps*. My requirement is to test up to *8 Gbps*. Even after doubling the > number of instances on both sides, the throughput does not improve. > > *Request:* > > - Are there any recommended approaches or configuration changes that > could help me reach the 8 Gbps target? > - Would you suggest a different testing methodology or tool for higher > throughput testing across the interconnect? > > Your guidance or any suggestions to help meet this requirement would be > greatly appreciated. > > Thank you, > > > _______________________________________________ > Iperf-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/iperf-users >
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