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System for managing logic subarea occupancy

A technology for logical partitioning and data processing systems, which is applied in the field of assigning virtual processors to central processing units, and can solve problems such as destroying performance relationships

Pending Publication Date: 2006-05-03
INT BUSINESS MASCH CORP
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AI Technical Summary

Problems solved by technology

Interrupting such sensitive operations creates performance relationships that may undermine the benefits realized by logically partitioned environments

Method used

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  • System for managing logic subarea occupancy
  • System for managing logic subarea occupancy
  • System for managing logic subarea occupancy

Examples

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Embodiment Construction

[0018] Features of the invention include an apparatus, program product, and method for distributing work within a logically partitioned computer system by guaranteeing partition access to physical resources for a preset guarantee period. To this end, query hypervisor calls are supported to allow partitions to ask if there is work pending for the hypervisor. The presence of pending hypervisor work generally means that the hypervisor partition's virtual processors will need to access processor cycles to complete the pending work. In other words, the hypervisor will need to preempt use of the physical processor. If the query hypervisor call returns a response indicating that there is no pending work, the hypervisor essentially guarantees that the physical processor or other resource on which the call is made will not be the target of hypervisor preemption for the duration of the preset period. This duration or guaranteed period is usually an implementation dependent constant. H...

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Abstract

An apparatus, program product, and method guarantee a period of time during which resource usage of a partition will not be preempted by a hypervisor. Query communication from a partition prompts the hypervisor to determine if work is in progress because the hypervisor is hanging. If not, the hypervisor sends a guarantee response, ensuring a period of uninterrupted use of the resource by the partition.

Description

technical field [0001] The present invention relates to computing systems, and more particularly to assigning virtual processors to central processing units within the context of logical partitions. Background technique [0002] The speed and efficiency of many computing applications depend on the availability of processing resources. To this end, computing architectures, such as the "virtual machine" design developed by International Business Machines Corporation, share common processing resources among multiple processes. Such architectures conventionally depend on a single computing machine containing one or more physical processors, or central processing units (CPUs). A physical processor can execute software configured to emulate multiple virtual processors. [0003] Virtual processors have particular application within logically partitioned computing systems. A partition may logically include a portion of a machine's physical processors, memory, and other resources ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F9/46G06F9/455
CPCG06F9/4881G06F9/5077G06F2209/5014
Inventor 威廉·J·阿姆斯特朗理查特·L·阿恩特迈克尔·T·贝纳斯劳伦斯·C·布朗特许育诚内尔什·内雅尔
Owner INT BUSINESS MASCH CORP
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