search for: vhost_kernel

...g. So I don't think you can skip checking the available ring. And in fact depending on ring size and workload, using all of descriptor buffer might cause a slowdown. Rather you should be able to get about the same speedup, but from skipping checking the used ring in virtio. > Virito-user + vhost_kernel + XDP_DROP gives about ~10% improvement on > TX from 4.8Mpps to 5.3Mpps on Intel(R) Core(TM) i7-5600U CPU @ > 2.60GHz. > > Signed-off-by: Jason Wang <jasowang at redhat.com> > --- > drivers/vhost/vhost.c | 19 ++++++++++++------- > 1 file changed, 12 insertions(+), 7 de...

Hi: This series implement basic in order feature support for vhost_net. This feature requires both driver and device to use descriptors in order which can simplify the implementation and optimizaton for both side. The series also implement a simple optimization that avoid read available ring. Test shows 10% performance improvement. More optimizations could be done on top. Jason Wang (3):

Device use descriptors table in order, so there's no need to read index from available ring. This eliminate the cache contention on avail ring completely. Virito-user + vhost_kernel + XDP_DROP gives about ~10% improvement on TX from 4.8Mpps to 5.3Mpps on Intel(R) Core(TM) i7-5600U CPU @ 2.60GHz. Signed-off-by: Jason Wang <jasowang at redhat.com> --- drivers/vhost/vhost.c | 19 ++++++++++++------- 1 file changed, 12 insertions(+), 7 deletions(-) diff --git a/drivers/vh...