International Business Machines Corporation

Charles Volzka

Joseph W Cropper

Sadek Jbara

James E Carey

Ofer Biran

Bradley L Manning

Drew C Varner

A method and system are provided for implementing virtual machine (VM) memory right-sizing using VM memory compression. VM memory right-sizing includes monitoring VM memory utilization relative to a memory utilization up-size threshold and a memory utilization down-size threshold for the VM, and a current memory compression factor of total effective memory based on compression. When the VM is above the memory utilization up-size threshold and at a maximum memory allocation, a memory compression factor is increased. When the VM is below the memory utilization down-size threshold and the current memory compression factor is greater than one, the memory compression factor is decreased.

Implementing VM memory right-sizing using VM memory compression

A computer-implemented method may include identifying a sending computer system and a receiving computer system. The method may also include receiving a request from the sending computer system for a receptiveness value of the receiving computer system, where the receptiveness value indicates openness of the receiving computer system to interruption. The method may also include determining a current state of the receiving computer system. The method may also include determining a known state of the receiving computer system. The method may also include calculating a known state receptiveness value. The method may also include analyzing the current state and the known state to determine whether the current state is equivalent to the known state. The method may also include calculating the receptiveness value for the receiving computer system. The method may also include transmitting computer instructions for displaying the receptiveness value to the sending computer system.

Using and comparing known and current activity states to determine receptiveness

A method, executed by a computer, for allocating resources to virtual machines includes monitoring resource usage for a selected resource for one or more capped virtual machines and one or more uncapped virtual machines, and responsive to detecting a first resource violation, the first resource violation corresponding to resource usage for a capped virtual machine and a second resource violation, the second resource violation corresponding to resource usage for an uncapped virtual machine, adjusting allocation of the selected resource for each of the one or more capped virtual machines previous to adjusting allocation of the selected resource for any of the uncapped virtual machines. A computer program product and computer system corresponding to the above method are also disclosed herein.

Allocating resources to virtual machines

Adjusting allocation of selected resources for capped and uncapped virtual machines

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Rochester, MN, United States of America

Charles Volzka