The m2 flavors may be subject to node-specific over-commit.The standard NeCTAR flavors are as follows: Name the number of VCPUs, amount of memory and the size of the local file systems. It specifies the dimensions of an Instance e.g. (This is equivalent to Amazon EC2 Reserved Instances.)Ī flavor is OpenStack terminology for a "virtual hardware template". NeCTAR OpenStack is designed on the assumption that you should be able to unsuspend or power up an instance at any time, and have the "level of service" that you expect. That is because when an instance exists on a compute node in a paused or shutdown state, it stops other instances being launched on that node. Note that the VCPU hours measure includes time when an instance is paused or shutdown. Where the lifetime of an instance starts when the instance is created, and ends when it is terminated. "number VCPUs" / "over-commit ratio" x "lifetime of instance" The VCPU hours measure for an instance is calculated as: VCPU hours is an OpenStack measure of the resources that your instances are using. The difference is that a VCPU can actual represent a fractional share of a core on the physical machine see below. ![]() At first glance, a VCPU is like a "core" on a typical modern desktop or laptop computer. A virtual machine can have a number of VCPUs. a virtual processor for a virtual machine. The term VCPU is short for "virtual CPU" i.e. OpenStack does not support instances that span multiple compute nodes, so the theoretical maximum dimensions of an instance are determined by the compute node hardware. a physical computer populated with processor chips, memory chips and so on. An "Instance" runs on a "compute node" i.e.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |