Everyone should be using Docker?
So, is it really that simple, should everyone stop using virtual machines and use containers instead?
In July 2014, Wes Felter, Alexandre Ferreira, Ram Rajamony, and Juan Rubio published an IBM research report titled An Updated Performance Comparison of Virtual Machines and Linux Containers and concluded:
"Both VMs and containers are mature technology that have benefited from a decade of incremental hardware and software optimizations. In general, Docker equals or exceeds KVM performance in every case we tested. Our results show that both KVM and Docker introduce negligible overhead for CPU and memory performance (except in extreme cases). For I/O intensive workloads, both forms of virtualization should be used carefully." ...
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