Dual-core/quad-core falloff
For a given dual-core or quad-core solution with 4-8 GB memory, what is the falloff in application performance with each added Virtual Session?

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The falloff would probably depend entirely on the applications running in each virtual session. If you have several virtual sessions that don't have more than 5-10% total system usage, they're probably going to be a lot less stressful than one or two sessions that use a lot of CPU or memory bandwidth.

The best way to find out the load capacity on any given system is to perform real-world testing. One particularly interesting tool I've come across is a standalone Linux distribution called StressLinux, which can be run in a given machine instance and contains a slew of utilities that can be used to simulate various kinds of loads.

This was first published in March 2007

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