Have you installed the vmware tools on the guest? These provide improved drivers which may help.
Of couse I have. I also tried playing around with the (virtual) network adapter type. I also adjusted the host network settings like Large-Send-Offload disabled.
Sorry, just making sure!
I tried some performance tests a few months ago (using beta1) using a vista ultimate 64bit & an ubuntu 7 host. The system was dual bootable, and I could run the same VMs with either vista or ubuntu. Both gave quite poor network performance, ubuntu was worse than vista. Having said that, I never fully trusted the figures as reruns did not give consustant figures.
Is your performance specifically internet access or any access on the lan port?
It is only the upload speed to the internet. As I said, I started the same VM unter Workstation 6 on my desktop (within the same network) and the performance was as I expected (about 3 times faster). So I am sure my internet access (e.g. router/line) isn't the bottleneck.
I ran this VM some month ago on a W2K3 with VMServer 1.04 and I have had no issues. In the meanwhile I upgraded the virtual hardware so I can not test the "old" VMServer.
Did anyone tried to test real network throughput for RC1?
Copying one huge file from VM to physical server at 48MB/s compared to physical-physical is more than 10x slower (640MB/s)
Is this normal situation?
I wish I could do 48MegaBytesPerSecond on my physical host (on the same disk).
Do you have "Routing and Remote Access" configured at your w2k8 host?
If yes, remove it back or just disable "IP Forwarding" for the server using the snap-in.
If you really need the routing service on the host, then choose another OS for vmware server, or configure a guest machine to provide the routing service, it can be a w2k8 x64 guest.
I configured RAS. Well, a feature or a bug?
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Note that you can still leave the RAS configured for VPN access, but you must disable IP forwarding.
It took me a whole afternoon of a beautifull day wasted to figure it out. And its not slow speed, its a high degree of network packet loss, probably due to corruption of the routing table or FIB (so it only affects internet connections of outside the local network), which causes connections resets and very slow performance.
Obviously it is a bug, what I still dont know is which one is responsible for it, w2k8 or VMware Server.