Interestingly enough, i'm not a vm guy. I'm a network guy. And i've been working on this bandwidth issue for several weeks, see http://communities.vmware.com/message/2190976#2190976
When i run iperf i'll get the full 20Mbps, so the circuit is ok and there's very little if any dropped packets. Everything "looks" ok, but when i sniff regular user traffic at random times during the day i'm seeing dropped packets, but couldn't place where. That picture above, last night i was just poking around in vSphere for the first time and nearly fell out of my chair!
This virtual network is accessed from 2 locations. One is Hartford over a dedicated point to point, the other is Stamford over their internet connection...Stamford has no issues. Hartford does. These are high end machines running CAD and Revit. Most are with dual monitors on the local side. There's one or two zero clients, most are laptops and workstations accessing the VDI with View 5.01. There are also about 5 physical machines on this virtual network that have PCoIP host cards in them. Those are shared among all the users in both offices.
The thing that gets me, in testing you can access a Hartford VDI from Stamford and there's no problems. In Hartford you can access a Stamford VDI and have a lot of problems. Which almost assuredly points to a circuit bottleneck, but hartford is about 20 maybe 25% utilized.
It was great finding this, but now I'm bothered by just a couple of things. One, the machines above are mostly Hartford machines but if this is actually the issue I've been looking for:
1. Why would a Stamford machine exhibit this behavior and it not be a problem?
2. It's only a couple of Hartford machines, why is the entire office affected?
I have a couple of logical reasons for both, but I pose the questions to see what you VM Gurus come back with :smileyhappy:
Thank you very much!