A blog about C++ programming, more or less.
Oversubscribing physical resources on a VMs host is a common practice among administrators, who try to maximize the utilization of that host machine. Light oversubscription has only minor impact on the performance of applications running inside VMs, but if they push oversubscription too far, then the applications’ performance will suffer along with the host. As one of the applications’ engineer, it is important for you to understand what oversubscription is and when a performance issue is indeed caused by oversubscription.