Abstract
Currently many interactive applications are running remotely by many users. The success of these applications much depends on performance which accepts data or commands from users. The virtualization solutions provided a suitable environment to increase flexibility, easy to apply redundancy concepts to achieve consolidation of computing resources. The main requirement for successful virtualization is performance of applications. However, each application relies on performance in different hardware subsystems. Vendor's researches have shown that performance can be achieved with virtualization as on physical hardware. Most of the work on testing virtual solutions performance is conducted by vendors. In this paper, I present a critical view and comparison on virtual solution performance using telecommunication applications to meet high quality of service. It compares memory performance and TCP throughput on physical and virtual environments.