Compute and Memory Intensive Web Service Performance in the Cloud

Migration of web services from company’s on-site premises to cloud provides ability to exploit flexible, scalable and dynamic resources payable per usage and therefore it lowers the overall IT costs. However, additional layer that virtualization adds in the cloud decreases the performance of the web services. Our goal is to test the performance of compute and memory intensive web services on both on-premises and cloud environments. We perform a series of experiments to analyze the web services performance and compare what is the level of degradation if the web services are migrating from on-premises to cloud using the same hardware resources. The results show that there is a performance degradation on cloud for each test performed varying the server load by changing the message size and the number of concurrent messages. The cloud decreases the performance to 71.10% of on-premise for memory demand and to 73.86% for both memory demand and compute intensive web services. The cloud achieves smaller performance degradation for greater message sizes using the memory demand web service, and also for greater message sizes and smaller number of concurrent messages for both memory demand and compute intensive web services.