International Business Machines Corporation

Jeffrey G Chan

Jerry A Moody

Seth E Lederer

Jeffrey Paul Kubala

Muruganandam Somasundaram

Hunter J Kauffman

Logical processor distribution across physical processors is provided. A set of logical processors of a number of logical processors defined for a particular logical partition of a plurality of active logical partitions is assigned to a physical processor chip having a greatest logical processor entitlement for the particular logical partition until no more logical processors can be assigned to that physical processor chip based on a logical processor entitlement of that physical processor chip being exhausted. Remaining logical processors of the number of logical processors defined for the particular logical partition are assigned to other physical processor chips of a plurality of physical processor chips assigned to the particular logical partition until all of the remaining logical processors have been assigned to a physical processor chip.

Distribution of over-configured logical processors

In an approach for isolating physical processors during optimization of virtual machine placement, a server is provided comprising a plurality of containers and a plurality of physical processors. A processor builds a set of bit masks for each type of physical processor required for a logical partition. A processor builds a set of solution spaces based on the plurality of containers and an amount of each type of container of the plurality of containers. A processor completes a combinatorial search of the set of bitmasks and the set of solution spaces. A processor identifies a solution space of the set of solution spaces for the logical partition. The physical and logical configuration of the server is changed based on the solution space for the first logical partition.

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Fishkill, NY, United States of America

Jeffrey G Chan