On a side note, on initially upgrading to RC1, and installing the latest VM tools, the network speed was only registered on my Win2k3 VM's as 10MB.
Manually changing the driver has meant that the netowrk connection speed is now reported as 1GB, however it doesn't appear to make any difference to the actual transfer rate so it's probably just a reporting change.
So was 10MB before. That is meaningless.
Is your physical host plugged in into gigabit switch?
Did you try to disable offloading features in your host NIC?
Did you create a completely new guest in RC1 to test its speed?
Is your network speed problem symetrical or asymetrical?
Did you check your host disk for any read/write errors (surface scan)?
I'm seeing sort the same issue right now.
I wanted to test out one of our webservers as a VM. So I setup a fresh VMWARE Server Beta 2 RC1. I did a physical to virtual of one of my websites. Everything loaded up wonderfully, just perfect. But then I did some speed tests on the site and I noticed the virtual sites web pages take about 1 second longer to load then the physical box. The VM Server has GIG nics and its hooked up into a GIG network..... same network and setup as the physical webserver, yet the pages take 1 second longer to load.... I've done some file transfers as well and they take little longer on the VM then on the physical...
I this just common with a VM server... guess you get what you pay for...
Is there any performance tweaking writeups out there?
First thing to do, is to look at your host performance and see where bottlenecks are.
Sorry for the delay in coming back to you.
Your answer was correct. As soon as I disabled the offloading features on the host NIC, the network connections came back up to speed.
Just for info, I did some calculations and i was getting transfer rates of approximately 30Kb/s before changing this.
Thanks for your help