Change Description
New Features
VMs running on the same NUMA node share public resources, such as memory bandwidth and cache lines. When the shared resources are insufficient, resource contention may occur among VMs, causing performance deterioration. Customers want to limit the resource usage of VMs by configuring the upper limits of VM memory bandwidth and cache size, preventing interference between multiple tenants and improving the availability of cloud hosts. Memory System Resource Partitioning and Monitoring (MPAM) provides the function of limiting the maximum memory bandwidth and cache line quantity of a process. You can adapt this feature for libvirt so that you can configure the DDR bandwidth and cache size of a VM using the XML file.
Modified Features
None
Deleted Features
None
Parent topic: 25.2.RC1