• Michael S. Tsirkin's avatar
    tools/virtio: add ringtest utilities · 481eaec3
    Michael S. Tsirkin authored
    This adds micro-benchmarks useful for tuning virtio ring layouts.
    Three layouts are currently implemented:
    
    - virtio 0.9 compatible one
    - an experimental extension bypassing the ring index, polling ring
      itself instead
    - an experimental extension bypassing avail and used ring completely
    
    Typical use:
    
    sh run-on-all.sh perf stat -r 10 --log-fd 1 -- ./ring
    
    It doesn't depend on the kernel directly, but it's handy
    to have as much virtio stuff as possible in one tree.
    Signed-off-by: default avatarMichael S. Tsirkin <mst@redhat.com>
    481eaec3