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Comment Re:Would be interesting if done right (Score 1) 223

We fully understand the different versions available. The version used was clearly documented in the report. Had we not mentioned the verion used, or implied that this was NOT the free version, then we would have "screwed up".

Just because we didn't test the version that you would like us to have tested does not mean that the test is "screwed up". Please feel free to run your own tests on ESX Server if that is what you are interested in.

We ran the tests as designed because
(1) We have 2 VMWare Server (free version) running in our office and were curious about the performance impact under load
(2) We believe that there are a lot of smaller organizations doing the same thing

In the future, I recommend that you ignore evaluations that are not relevant to the needs of your organization.
Operating Systems

Virtualizing Cuts Web App Performance 43% 223

czei writes "This just-released research report, Load Testing a Virtual Web Application, looks at the effects of virtualization on a typical ASP Web application, using VMWare on Linux to host a Windows OS and IIS web server. While virtualizing the server made it easier to manage, the number of users the virtualized Web app could handle dropped by 43%. The article also shows interesting graphs of how hyper-threading affected the performance of IIS." The report urges readers to take this research as a data point. No optimization was done on host or guest OS parameters.

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