Tracking RAM in VMs with and without hugepages in OpenStack
Issue
- Does OpenStack track both
4K
and1G
page sizes, not only total RAM, to avoid scheduling too many VMs on4K
pages? Nova
scheduling service needs to be improved to track better memory resources, sincenova
inventory does not differentiate between4K
andhugepages
memory space, therefore it may allow a virtual machine not usinghugepages
to consume the compute node's entire available memory.
Environment
- Red Hat OpenStack Platform (OSP) 13, 16
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