Re: > It was as though no one knew servers could multi-task !!
Running different workloads competing for resources on a single system may not be an easy tasks, especially on OSes that don't let partitioning and assigning resources easily - i.e. Windows, something can be done using jobs, but that require applications support. Otherwise a "rogue" application can exhaust all physical memory and/or CPU, and starve other applications.
But developers capable of writing software that "play nicely with others" are rare, because it's far simpler and quicker to use as much resources as you can find, instead of writing clever and optimized code. And even when the options exist, they are often overlooked and the default installation is designed for a standalone application, because other types of tuning need to be done on an ad-hoc basis.
Thereby the simplest way became VMs, especially when the hypervisor can control the resources assigned to each VMs.
Biting the hand that feeds IT
