Docker versus KVM: Uma análise de desempenho de disco para pequenos arquivos

Abstract

Cloud computing uses virtualization extensively, because it offers the ability to share physical resources through virtual machines (VMS) with different workloads isolated and safe way. However virtualization adds an extra layer of abstraction, the hypervisor. And consequently a performance reduction compared to native performance (non-virtualized). Docker provides a lightweight virtualization operating system level (based on containers). Which removes the abstraction layer added by hypervisors, improving performance and speed implementation of virtualized environments, widely used by public cloud providers tool. In turn the KVM Kernel-based Virtual Machine it is a tool that uses hardware-assisted virtualization and has very close to native performance, great insulation features and small extra charge added by the hypervisor. We perform this work one geared disk performance analysis for small files. We evaluate and compare the Docker and KVM technologies. Identified in which the scenarios evaluated technologies are most appropriate and what their performance difference compared to native performance. Using varying the number of containers and VMs, thus evaluating the performance of both technologies relative to the disk and the impact caused by containers and VMs on your host