Dynamic CPU Resource Allocation for Multi-Processor Servers
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Solution Overview
Problem
In high-performance servers with multiple CPUs, existing CPU resource allocation methods lead to imbalanced usage, resulting in some CPUs being overloaded while others are underutilized, causing performance degradation due to the inability to efficiently isolate and allocate resources among process groups.
Innovation Solution
A method and apparatus for dynamically allocating CPU resources by obtaining the demanded resources for each process group and idle resources for each CPU during a pre-configured time period, allowing for balanced allocation based on real-time demands and availability, thereby optimizing CPU usage across multiple process groups.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If CPU resources are pinned to process groups for isolation, then CPU resource isolation is achieved, but CPU usage balance deteriorates causing some CPUs to be overloaded while others are underutilized
Solution Approach 1:
The patent implements dynamic CPU resource allocation by continuously monitoring CPU usage metrics and adjusting process group to CPU bindings in real-time. The system transitions from static pinning to dynamic allocation, where the binding relationships are adjusted based on current workload conditions, thereby maintaining both isolation and balanced utilization across multiple CPUs
Solution Approach 2:
The system establishes a feedback mechanism that collects CPU usage data from process groups, analyzes the distribution patterns, and automatically adjusts CPU allocations to achieve better balance. This closed-loop control ensures that isolation requirements are maintained while preventing overload conditions on specific CPUs
2Productivity
If CPU resources are over-provisioned to increase usage rate, then CPU resource usage efficiency improves, but performance variance increases due to imbalanced workload distribution
Solution Approach 1:
The patent dynamically adjusts CPU allocation parameters based on monitored workload characteristics and usage patterns. By changing allocation parameters in response to system state, the system maintains high CPU utilization while ensuring performance stability through balanced distribution of computational loads across available processors
Data Source
AI summary
A method of central processor unit (CPU) resource allocation for a multi-processor device includes the step of obtaining the amounts of demanded CPU resources for the process groups executing on the multi-processor device during a pre-configured time period. The method also includes the step of obtaining the amounts of idle CPU resources for the CPUs of the multi-processor device during the pre-configured time period. The method further includes the step of allocating the CPUs to the process groups based upon the obtained amounts of demanded CPU resources for the process groups and the obtained amounts of idle CPU resources for the CPUs.