Abstract: Machines, systems and methods for deploying virtual machines (VMs), the method comprises maintaining N message queues corresponding to N VM flavors, wherein the N VM flavors are associated with N distinguishable configuration requirements for supporting placement of at least a first VM on at least a first host with limited resources; wherein a first host from among a plurality of hosts subscribes to a first message queue from among the N message queues, in response to determining that the first host has the resources that match the respective configuration requirements for supporting the first VM placed on the first message queue; receiving a VM placement request for the first VM, wherein the VM placement request comprises information indicating a first VM flavor associated with a first message queue; communicating arrival of the VM request to one or more hosts subscribing to the first message queue.

Abstract: Machines, systems and methods for allocating resources to in a virtualized computing environment, the method comprising detecting one or more host machines with resources allocated to one or more virtual machines (VMs) that are in an idle state; reducing resource entitlements for at least one of the VMs that is detected to be in the idle state to make more resources available for allocation to VMs that are not in the idle state; and increasing resource entitlements for at least one of the VMs with reduced entitlement, in response to determining that the VM with reduced entitlement is no longer in the idle state.

Abstract: Machines, systems and methods for deploying virtual machines (VMs), the method comprises maintaining N message queues corresponding to N VM flavors, wherein the N VM flavors are associated with N distinguishable configuration requirements for supporting placement of at least a first VM on at least a first host with limited resources; wherein a first host from among a plurality of hosts subscribes to a first message queue from among the N message queues, in response to determining that the first host has the resources that match the respective configuration requirements for supporting the first VM placed on the first message queue; receiving a VM placement request for the first VM, wherein the VM placement request comprises information indicating a first VM flavor associated with a first message queue; communicating arrival of the VM request to one or more hosts subscribing to the first message queue.

Abstract: Machines, systems and methods for allocating resources to in a virtualized computing environment, the method comprising detecting one or more host machines with resources allocated to one or more virtual machines (VMs) that are in an idle state; reducing resource entitlements for at least one of the VMs that is detected to be in the idle state to make more resources available for allocation to VMs that are not in the idle state; and increasing resource entitlements for at least one of the VMs with reduced entitlement, in response to determining that the VM with reduced entitlement is no longer in the idle state.