On Tue, Nov 17, 2020 at 04:00:09PM +0000, Venegas Munoz, Jose Carlos wrote: > > Not sure what the default is for 9p, but comparing > > default to default will definitely not be apples to apples since this > > mode is nonexistent in 9p. > > In Kata we are looking for the best config for fs compatibility and > performance. So even if are no apples to apples, > we are for the best config for both and comparing the best that each of them > can do.
Can we run tests in more than one configuration. Right now you are using cache=mmap for virtio-9p and cache=auto for virtiofs and as Miklos said this is not apples to apples comparison. So you can continue to run above but also run additional tests if time permits. virtio-9p virtio-fs cache=mmap cache=none + DAX cache=none cache=none cache=loose cache=always Given you are using cache=mmap for virtio-9p, "cache=none + DAX" is somewhat equivalent of that. Provides strong coherency as well as allow for mmap() to work. Now kernel virtiofs DAX support got merged in 5.10-rc1. For qemu, you can use virtio-fs-dev branch. https://gitlab.com/virtio-fs/qemu/-/commits/virtio-fs-dev Thanks Vivek