I'm testing the S100V virtual WSA on unsupported hardware (Dell PE1950, 8Gb 667MHz RAM, 3 disk RAID5 10kRPM, Dual Intel Xeon E5320 1.8GHz Procs) and I'm finding response times on many pages to be very slow. We're using forwarding so I can swap from our S170 back and forth to compare. The server specs wouldn't suggest such slow response from the S100V. Some pages take well over a minute to load while on the S170, they take less than 5 seconds. Has anyone else experienced this?
You're likely hitting defect # CSCug24726. The problem is not so much that it is virtualized. The problem lies within the version 7.7.0 code which the vWSA is based off of.
You should be able to get better performance if you enabled Adaptive Scanning together with the AVC. However, the Adaptive Scanning feature has some problems on its own so it probably won't be as fast as haviing it all turned off. But it will definitely be much better than having Adaptive Scanning disabled with AVC enabled.
Also as the defect filing suggests, you may want to review your AVC settings within the access policies. Certain categories set to BLOCK triggers this defect. If you have the time, you might want to test it a little. Enable AVC and disable Adaptive Scanning, and make sure nothing in the AVC is set to BLOCK.