1. A computing system, comprising: a processor; a network interface; a memory containing a hypervisor configured to execute a plurality of virtual machines on the computing system; and a feedback agent configured to perform an operation to monitor an availability of at least a first virtual machine, of the plurality, the operation comprising: monitoring one or more performance metrics of the first virtual machine, monitoring one or more performance metrics of the computing system, normalizing the one or more performance metrics of the first virtual machine based on the performance metrics of the computing system, and sending, over the network interface, the normalized performance metrics of the virtual machine to a load balancer.