Hello, I am looking for a way to help improving qemu block performance.
APIC-V is a work in progress and the two options with public code are vhost-* and virtio-blk-dataplane. The way of doing seems very similar (bypassing the qemu lock) and dedicating a thread to each emulated virtio block device. vhost-* is in kernel while dataplane is in qemu. Performance seems similar. Dataplane seems to be a demonstrator to be replaced by an evolution of the qemu block layer made thread friendly and vhost-blk is not upstream yet. This left me with the following questions : Are dataplane and vhost-block purpose the same (speed) despite being pushed by the same company (Red Hat) ? What is the best path I can take to help improve qemu block performance ? Best regards Benoît
