Hello,
im using several hosts with ESX 5.5 they all have 8 10Gb ethernet cards being used as 2 LAGs of 40Gb on each host. They are all connected in a 10Gb switch.
We are trying to fine tune to improve our performance and we discovered the following.
Using iperf or just transfering files from linux to linux or windows to windows, the max speed we can get its 1Gb of transfer and i mean like 120Mb being multiplied by 8 getting around a 1Gb speed.
On the Vms itself they have VMXnet3 and the speed shows 10GB. Some transfers as shown above we're made with Virtual Machines in different hosts and Virtual Machines on the same host.
Any ideas or suggestions of were can i look to understand better this behavior ?
LAGs are almost not being used.
