We do test both VDS and VSS in our dev environment without problems. Could you please go to /var/www/expts/ on the controller VM and then cd to the test that you think it should contain desired stats? In the directory, please then go to "timeseries" folder and do an ls to see whether IOAnalyzer did collect all disk and networking performance objects (you should see a number of timeseries-network/adapter/vm/device-* files). If under the timeseries folder, there are reasonable amount of timeseries files, most likely IOAnalyzer has filtered out non-active counters. Please try to push more traffic and re-run the test again. If problem still persists, please send an email to io-analyzer-info@vmware.com so that we could provide a mean to adjust filtering threshold. Having said that, if majority of timeseris data files are missing, IOAnalyzer might have failed to pull most of the counters from ESX. If this is the case, please send us your /var/log/daemon.log and /var/www/ioa.log so that we can collect debugging information.
Thanks,
Chien-Chia