I am new to Vmware Esxi and im doing testing for an experiment with an Vmware ESXI 6.0.0 server. on the server there is two Ubuntu guest clients with one VMXNET3 each, both on the same Vswitch.
Upon doing an IPerf3 from Ubuntu A to Ubuntu B with the following command:
iperf -c Ubuntu B -u -b 80m -t 100 -V
I get a package loss of 10% on all my packets. It is not a stable packet loss as it jumps up as high as 50% from times. Testing different speeds yields the similar result. The Esxi monitor shows a total cpu load of 24% so it seems not to be of cpu overuse.
I have followed these pages to try fix the problem;
Increased MTU size. This helped slightly with greater packet amounts but small amounts of data still yields high packetloss (10%~ packetloss). http://www.ubuntugeek.com/how-to-change-mtu-maximum-transmission-unit-of-network-interface-in-ubuntu-linux.html
Changed MTU size on the Vswitch. https://docs.vmware.com/en/VMware-vSphere/5.5/com.vmware.vsphere.networking.doc/GUID-40856C1E-7631-4228-A111-13A783316595.html
What can I do more to troubleshoot my VMware ESXI setup?