On 2019/5/10 下午8:58, 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 84b72026d327..5a9d25be72df 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) #define VIRTIO_VSOCK_MAX_BUF_SIZE 0xFFFFFFFFUL #define VIRTIO_VSOCK_MAX_PKT_BUF_SIZE (1024 * 64)
We probably don't want such high order allocation. It's better to switch to use order 0 pages in this case. See add_recvbuf_big() for virtio-net. If we get datapath unified, we will get more stuffs set.
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