search for: mergeability

On 2018/12/12 23:09, Michael S. Tsirkin wrote: > On Wed, Dec 12, 2018 at 05:25:50PM +0800, jiangyiwen wrote: >> Now vsock only support send/receive small packet, it can't achieve >> high performance. As previous discussed with Jason Wang, I revisit the >> idea of vhost-net about mergeable rx buffer and implement the mergeable >> rx buffer in vhost-vsock, it can allow

Now vsock only support send/receive small packet, it can't achieve high performance. As previous discussed with Jason Wang, I revisit the idea of vhost-net about mergeable rx buffer and implement the mergeable rx buffer in vhost-vsock, it can allow big packet to be scattered in into different buffers and improve performance obviously. This series of patches mainly did three things? -

Now vsock only support send/receive small packet, it can't achieve high performance. As previous discussed with Jason Wang, I revisit the idea of vhost-net about mergeable rx buffer and implement the mergeable rx buffer in vhost-vsock, it can allow big packet to be scattered in into different buffers and improve performance obviously. This series of patches mainly did three things? -

Now vsock only support send/receive small packet, it can't achieve high performance. As previous discussed with Jason Wang, I revisit the idea of vhost-net about mergeable rx buffer and implement the mergeable rx buffer in vhost-vsock, it can allow big packet to be scattered in into different buffers and improve performance obviously. I write a tool to test the vhost-vsock performance, mainly

Now vsock only support send/receive small packet, it can't achieve high performance. As previous discussed with Jason Wang, I revisit the idea of vhost-net about mergeable rx buffer and implement the mergeable rx buffer in vhost-vsock, it can allow big packet to be scattered in into different buffers and improve performance obviously. I write a tool to test the vhost-vsock performance, mainly

Since VSOCK already support mergeable rx buffer, so it can implement the balance with performance and guest memory, we can increase the sent pkt len to improve performance. And in order to be compatible with old version, so we still send max default rx buf size once. Signed-off-by: Yiwen Jiang <jiangyiwen at huawei.com> --- drivers/vhost/vsock.c | 33

On Wed, Dec 12, 2018 at 05:25:50PM +0800, jiangyiwen wrote: > Now vsock only support send/receive small packet, it can't achieve > high performance. As previous discussed with Jason Wang, I revisit the > idea of vhost-net about mergeable rx buffer and implement the mergeable > rx buffer in vhost-vsock, it can allow big packet to be scattered in > into different buffers and

In driver probing, if virtio has VIRTIO_VSOCK_F_MRG_RXBUF feature, it will fill mergeable rx buffer, support for host send mergeable rx buffer. It will fill a page everytime to compact with small packet and big packet. Signed-off-by: Yiwen Jiang <jiangyiwen at huawei.com> --- include/linux/virtio_vsock.h | 3 ++ net/vmw_vsock/virtio_transport.c | 72

In driver probing, if virtio has VIRTIO_VSOCK_F_MRG_RXBUF feature, it will fill mergeable rx buffer, support for host send mergeable rx buffer. It will fill a page everytime to compact with small packet and big packet. Signed-off-by: Yiwen Jiang <jiangyiwen at huawei.com> --- include/linux/virtio_vsock.h | 3 ++ net/vmw_vsock/virtio_transport.c | 72

When vhost support VIRTIO_VSOCK_F_MRG_RXBUF feature, it will merge big packet into rx vq. Signed-off-by: Yiwen Jiang <jiangyiwen at huawei.com> --- drivers/vhost/vsock.c | 111 ++++++++++++++++++++++++++++++-------- include/linux/virtio_vsock.h | 1 + include/uapi/linux/virtio_vsock.h | 5 ++ 3 files changed, 94 insertions(+), 23 deletions(-) diff --git

When vhost support VIRTIO_VSOCK_F_MRG_RXBUF feature, it will merge big packet into rx vq. Signed-off-by: Yiwen Jiang <jiangyiwen at huawei.com> --- drivers/vhost/vsock.c | 111 ++++++++++++++++++++++++++++++-------- include/linux/virtio_vsock.h | 1 + include/uapi/linux/virtio_vsock.h | 5 ++ 3 files changed, 94 insertions(+), 23 deletions(-) diff --git

This idea popped up in the review thread for https://reviews.llvm.org/D25627 . Problem: Currently, LLD creates special sections that are not just concatenations of input sections but need link-time data generation, such as .got, .plt, interp, .mips.options, etc., as output sections. We have OutputSectionBase subclasses (e.g. GotSection, PltSection, etc.) to create data. Even though this scheme

When vhost support VIRTIO_VSOCK_F_MRG_RXBUF feature, it will merge big packet into rx vq. Signed-off-by: Yiwen Jiang <jiangyiwen at huawei.com> --- drivers/vhost/vsock.c | 117 +++++++++++++++++++++++++++++++------- include/linux/virtio_vsock.h | 1 + include/uapi/linux/virtio_vsock.h | 5 ++ 3 files changed, 102 insertions(+), 21 deletions(-) diff --git

When vhost support VIRTIO_VSOCK_F_MRG_RXBUF feature, it will merge big packet into rx vq. Signed-off-by: Yiwen Jiang <jiangyiwen at huawei.com> --- drivers/vhost/vsock.c | 117 +++++++++++++++++++++++++++++++------- include/linux/virtio_vsock.h | 1 + include/uapi/linux/virtio_vsock.h | 5 ++ 3 files changed, 102 insertions(+), 21 deletions(-) diff --git

On 2018/11/6 11:38, Jason Wang wrote: > > On 2018/11/5 ??3:45, jiangyiwen wrote: >> In driver probing, if virtio has VIRTIO_VSOCK_F_MRG_RXBUF feature, >> it will fill mergeable rx buffer, support for host send mergeable >> rx buffer. It will fill a page everytime to compact with small >> packet and big packet. >> >> Signed-off-by: Yiwen Jiang

On 2018/12/12 23:37, Michael S. Tsirkin wrote: > On Wed, Dec 12, 2018 at 05:29:31PM +0800, jiangyiwen wrote: >> When vhost support VIRTIO_VSOCK_F_MRG_RXBUF feature, >> it will merge big packet into rx vq. >> >> Signed-off-by: Yiwen Jiang <jiangyiwen at huawei.com> > > I feel this approach jumps into making interface changes for > optimizations too

On 2018/12/12 23:37, Michael S. Tsirkin wrote: > On Wed, Dec 12, 2018 at 05:29:31PM +0800, jiangyiwen wrote: >> When vhost support VIRTIO_VSOCK_F_MRG_RXBUF feature, >> it will merge big packet into rx vq. >> >> Signed-off-by: Yiwen Jiang <jiangyiwen at huawei.com> > > I feel this approach jumps into making interface changes for > optimizations too

Guest receive mergeable rx buffer, it can merge scatter rx buffer into a big buffer and then copy to user space. Signed-off-by: Yiwen Jiang <jiangyiwen at huawei.com> --- include/linux/virtio_vsock.h | 9 ++++ net/vmw_vsock/virtio_transport.c | 75 +++++++++++++++++++++++++++++---- net/vmw_vsock/virtio_transport_common.c | 59 ++++++++++++++++++++++---- 3 files changed,

Guest receive mergeable rx buffer, it can merge scatter rx buffer into a big buffer and then copy to user space. Signed-off-by: Yiwen Jiang <jiangyiwen at huawei.com> --- include/linux/virtio_vsock.h | 9 ++++ net/vmw_vsock/virtio_transport.c | 75 +++++++++++++++++++++++++++++---- net/vmw_vsock/virtio_transport_common.c | 59 ++++++++++++++++++++++---- 3 files changed,

On 2018/11/5 ??3:43, jiangyiwen wrote: > Now vsock only support send/receive small packet, it can't achieve > high performance. As previous discussed with Jason Wang, I revisit the > idea of vhost-net about mergeable rx buffer and implement the mergeable > rx buffer in vhost-vsock, it can allow big packet to be scattered in > into different buffers and improve performance