On Thu, Apr 04, 2019 at 12:58:38PM +0200, Stefano Garzarella wrote: > In order to increase host -> guest throughput with large packets, > we can use 64 KiB RX buffers. > > Signed-off-by: Stefano Garzarella <sgarzare@xxxxxxxxxx> > --- > include/linux/virtio_vsock.h | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/include/linux/virtio_vsock.h b/include/linux/virtio_vsock.h > index 6d7a22cc20bf..43cce304408e 100644 > --- a/include/linux/virtio_vsock.h > +++ b/include/linux/virtio_vsock.h > @@ -10,7 +10,7 @@ > #define VIRTIO_VSOCK_DEFAULT_MIN_BUF_SIZE 128 > #define VIRTIO_VSOCK_DEFAULT_BUF_SIZE (1024 * 256) > #define VIRTIO_VSOCK_DEFAULT_MAX_BUF_SIZE (1024 * 256) > -#define VIRTIO_VSOCK_DEFAULT_RX_BUF_SIZE (1024 * 4) > +#define VIRTIO_VSOCK_DEFAULT_RX_BUF_SIZE (1024 * 64) This patch raises rx ring memory consumption from 128 * 4KB = 512KB to 128 * 64KB = 8MB. Michael, Jason: Any advice regarding rx/tx ring sizes and buffer sizes? Depending on rx ring size and the workload's packet size, different values might be preferred. This could become a tunable in the future. It determines the size of the guest driver's rx buffers.
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