Hardware
vCPU
Quick answer
A vCPU is a virtual CPU presented to a virtual machine, usually mapping to one hardware thread rather than one physical core.
A vCPU is a virtual CPU presented to a virtual machine, usually mapping to one hardware thread rather than one physical core.
Why it matters
Two vCPUs sharing one physical core do not perform like two cores. This is why dedicated and shared runners with identical vCPU counts can differ by a factor of two.
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Related
GravitonGraviton is AWS's family of arm64 server processors, offering better price-performance than comparable x86 instances for many workloads.Instance typeAn instance type is a cloud provider's named combination of vCPU, memory, storage and network capacity.KVMKVM is the Linux kernel's virtualization module, which lets a VM run guest code directly on the CPU rather than emulating it.Local SSDA local SSD is storage physically attached to the host machine, as opposed to network-attached block storage.