That VM is hardly "single purpose". There's logrotate and other cleanup tasks, monitoring, dns, a firewall, and many more stuff running on that server. No matt

That VM is hardly "single purpose". There's logrotate and other cleanup tasks, monitoring, dns, a firewall, and many more stuff running on that server. No matter how much you offload to the host (or forego), there's always a kernel and supporting deamons running alongside or under your app.