Performance analysis of process driven and event driven web servers

Nowadays virtualization playing a vital role in the cloud technology. Users deploying websites on virtual private servers called instances which is cost effective and scalable. The explosive growth in World Wide Web, users are able to access things with any device at any time and any place. Increasing the access will constitutes the load and stress on the servers. Sometrics are useful to gauge the performance of various architectures. In this analysis we consider three matrices, they are responsiveness, scalability and efficiency. We have defined response time, memory usage and error rate as key factors for responsiveness, scalability and efficiency respectively. In this paper we investigate the performance of two web servers in different scenario, i.e. Apache - process-based webserver and Nginx - asymmetric multi-process event-driven architecture (AMPED). Our research shows that the Nginx server out performs Apache server in terms of responsiveness and scalability, while Apache ensures the efficiency. The results are useful for those who want to host a website on virtual private server (VPS).