Messages in this thread | | | Subject | Re: [PATCH v2 7/8] vsock/virtio: increase RX buffer size to 64 KiB | From | Jason Wang <> | Date | Mon, 13 May 2019 18:01:52 +0800 |
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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@redhat.com> > --- > 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.
Thanks
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