Emerging Research in Computing, Information, Communication and Applications by N. R. Shetty L. M. Patnaik N. H. Prasad & N. Nalini

Author:N. R. Shetty, L. M. Patnaik, N. H. Prasad & N. Nalini
Language: eng
Format: epub
Publisher: Springer Singapore, Singapore

2 Traditional Approaches Vs. Cloud

To understand why troubleshooting performance issues and analysis of capacity in cloud environments are more difficult, we need to understand how the traditional approach differs from the cloud approach. Traditionally there was one physical machine hosting one application on one operating system. If the machine runs out of primary memory then the application running on that machine will be impacted. This will not impact any other applications and machines in the same network. But in cloud environments, all the virtual machines could be hosted on a single physical machine; there are possibilities that virtual machines are seeking more resources in order to process the user requests. Virtual machines are impacted when the memory of the host machines is utilized to its full capacity and in addition, a new application tries to access the same memory.

User expectations have changed due to the emergence of cloud computing . Users want to be connected on the go from any devices, anywhere. These user expectations or requirements lead to more innovations, which in turn increase the complexity of the system, which in turn leads to more complexity in resolving issues based on capacity and performance. Cloud computing, when compared to the traditional approach might seem to have a lot of drawbacks, but can be overcome by taking proper steps like using appropriate tools that will help in understanding the environment in detail, which helps in troubleshooting capacity-related issues. Issues can be prevented prior to their occurrence and the complexity in the cloud can be minimized with the help of these tools.

There are a few more important questions to be answered to achieve efficient capacity management in a virtualized cloud environment. The questions are as follows:1.What am I doing with my current capacity?

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