红帽全球峰会18.3. Virtual machine performance optimization for specific workloads
Virtual machines (VMs) are frequently dedicated to perform a specific workload. You can improve the performance of your VMs by optimizing their configuration for the intended workload.
| Use case | IOThread | vCPU pinning | vNUMA pinning | huge pages | multi-queue |
|---|---|---|---|---|---|
| Database | For database disks | Yes* | Yes* | Yes* | Yes, see: multi-queue virtio-blk, virtio-scsi |
| Virtualized Network Function (VNF) | No | Yes | Yes | Yes | Yes, see: multi-queue virtio-net |
| High Performance Computing (HPC) | No | Yes | Yes | Yes | No |
| Backup Server | For backup disks | No | No | No | Yes, see: multi-queue virtio-blk, virtio-scsi |
| VM with many CPUs (Usually more than 32) | No | Yes* | Yes* | No | No |
| VM with large RAM (Usually more than 128 GB) | No | No | Yes* | Yes | No |
* If the VM has enough CPUs and RAM to use more than one NUMA node.
A VM can fit in more than one category of use cases. In this situation, you should apply all of the suggested configurations.
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