Why am i getting 1Gbps speeds on 10Gbps links?
Hello everyone,
I have an Aruba Switch with 10Gbps interfaces, and two esxi servers with 10gbps nics connected to the aruba with cat6 ethernet cables. Using iperf3 between two virtual machines im getting around 1Gbps. I will attach a Wireshark capture that show the iperf3 connection from start to end.
Comments
Are you running TCP or UDP?
Im running TCP.
Can you check if the TCP window is large enough?
If you use ethtool. What do you get as negotiated speed? If you put both VM's on the same server. What throughput speed do you get? You are not likely to get anything better with 2 ESXi hosts.
Hello, i came back to office today, and i checked the TCP Windows, its 65535.
I move the two VMs to the same host and using Iperf3 im getting 2 Gbps speed. This means that my bottleneck is at the esxi level? should i replace the ESXi hosts with new servers?