Virtualization-based method and device for adjusting QoS (quality of service) of node memory of NUMA (non uniform memory access architecture)

Abstract

The invention discloses a virtualization-based method and device for adjusting QoS (quality of service) of node memory of NUMA (non uniform memory access architecture). The method includes: by means of acquiring an occupancy state of memory resources, predicting a memory required by every virtual machine in the future according to a certain rule so as to obtain the memory required for the next moment, and determining whether to adjust balance of memory load or not to guarantee the QoS of the memory; in the condition of insufficient memory resource, starting a memory balance adjusting operation, sensing the NUMA node according to a memory quotient proportion of every virtual machine so as to decide from which virtual machines the memory is reclaimed and to which virtual machines the memory is allocated, computing the sizes of reclaimable memory and the allocatable memories, and sending a given optimal memory value of an operation system of every client down to an actual adjusting part. The technical problems that during operation of the virtual machine, the virtual machine cannot sense a memory usage state of the node where the virtual machine currently locates and QoS of the memory cannot be adjusted from an angle of the system and the like are solved.

Description

technical field [0001] The invention belongs to the technical field of computer memory scheduling, and in particular relates to a virtualization-based NUMA node memory QoS adjustment method and device. Background technique [0002] At the beginning of virtual machine creation, by considering the initial placement algorithm of load balancing, each virtual machine can be created on a node with more free memory to ensure better memory QoS (quality of service). However, with the operation of virtual machines, some virtual machines often take up too much memory space due to their own needs, causing memory shortage in the entire system, causing other virtual machines to lack memory resources, and reducing the performance of the entire system. The cluster system mainly considers how to combine multiple heterogeneous node computers into a system that can provide powerful batch processing and parallel computing capabilities at a lower cost. Its resource management is to allocate sys...

AI Technical Summary

Problems solved by technology

However, this scheme accesses local memory by scheduling processes, but does not consider that the memory of the virtual machine under virtualization conditions may be distributed on multiple nodes

Images