Goal

Enable an option to use the new qemu support for multiqueue block layer which can improve performance for some workloads that utilize high performance storage (SSD/NVMe).

User Stories

• As a VM Owner, I want the ability to enable multiple IOthreads per guest disk to achieve the best performance possible when using fast storage

Non-Requirements

• Exposing all possible tuning options is not necessarily desired, it is more beneficial to improve "auto" behavior for most cases, however there may be corner cases that require more control

Notes

• This new feature will be available in 9.4 based builds
• RHEL-20764 [qemu-kvm] Enable qemu multiqueue block layer support
• RHEL-7416 [libvirt] RFE: Per-virtqueue IOThread assignment for virtio-blk
• Performance evaluation (starting w/ KVM) is ongoing: CNV-38527