From: Jason Wang <jasowang@redhat.com>
To: Wei Wang <wei.w.wang@intel.com>,
stefanha@gmail.com, marcandre.lureau@gmail.com, mst@redhat.com,
pbonzini@redhat.com, virtio-dev@lists.oasis-open.org,
qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [virtio-dev] Re: [PATCH v2 00/16] Vhost-pci for inter-VM communication
Date: Wed, 17 May 2017 14:22:53 +0800 [thread overview]
Message-ID: <7e1b48d5-83e6-a0ae-5d91-696d8db09d7c@redhat.com> (raw)
In-Reply-To: <d6eb1d73-c791-b8d3-7ef3-a7653aef00d6@redhat.com>
On 2017年05月17日 14:16, Jason Wang wrote:
>
>
> On 2017年05月16日 15:12, Wei Wang wrote:
>>>>
>>>
>>> Hi:
>>>
>>> Care to post the driver codes too?
>>>
>> OK. It may take some time to clean up the driver code before post it
>> out. You can first
>> have a check of the draft at the repo here:
>> https://github.com/wei-w-wang/vhost-pci-driver
>>
>> Best,
>> Wei
>
> Interesting, looks like there's one copy on tx side. We used to have
> zerocopy support for tun for VM2VM traffic. Could you please try to
> compare it with your vhost-pci-net by:
>
> - make sure zerocopy is enabled for vhost_net
> - comment skb_orphan_frags() in tun_net_xmit()
>
> Thanks
>
You can even enable tx batching for tun by ethtool -C tap0 rx-frames N.
This will greatly improve the performance according to my test.
Thanks
next prev parent reply other threads:[~2017-05-17 6:23 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-12 8:35 [Qemu-devel] [PATCH v2 00/16] Vhost-pci for inter-VM communication Wei Wang
2017-05-12 8:35 ` [Qemu-devel] [PATCH v2 01/16] vhost-user: share the vhost-user protocol related structures Wei Wang
2017-05-12 8:35 ` [Qemu-devel] [PATCH v2 02/16] vl: add the vhost-pci-slave command line option Wei Wang
2017-05-12 8:35 ` [Qemu-devel] [PATCH v2 03/16] vhost-pci-slave: create a vhost-user slave to support vhost-pci Wei Wang
2017-05-12 8:35 ` [Qemu-devel] [PATCH v2 04/16] vhost-pci-net: add vhost-pci-net Wei Wang
2017-05-12 8:35 ` [Qemu-devel] [PATCH v2 05/16] vhost-pci-net-pci: add vhost-pci-net-pci Wei Wang
2017-05-12 8:35 ` [Qemu-devel] [PATCH v2 06/16] virtio: add inter-vm notification support Wei Wang
2017-05-15 0:21 ` [Qemu-devel] [virtio-dev] " Wei Wang
2017-05-12 8:35 ` [Qemu-devel] [PATCH v2 07/16] vhost-user: send device id to the slave Wei Wang
2017-05-12 8:35 ` [Qemu-devel] [PATCH v2 08/16] vhost-user: send guest physical address of virtqueues " Wei Wang
2017-05-12 8:35 ` [Qemu-devel] [PATCH v2 09/16] vhost-user: send VHOST_USER_SET_VHOST_PCI_START/STOP Wei Wang
2017-05-12 8:35 ` [Qemu-devel] [PATCH v2 10/16] vhost-pci-net: send the negotiated feature bits to the master Wei Wang
2017-05-12 8:35 ` [Qemu-devel] [PATCH v2 11/16] vhost-user: add asynchronous read for the vhost-user master Wei Wang
2017-05-12 8:51 ` Wei Wang
2017-05-12 8:35 ` [Qemu-devel] [PATCH v2 12/16] vhost-user: handling VHOST_USER_SET_FEATURES Wei Wang
2017-05-12 8:35 ` [Qemu-devel] [PATCH v2 13/16] vhost-pci-slave: add "reset_virtio" Wei Wang
2017-05-12 8:35 ` [Qemu-devel] [PATCH v2 14/16] vhost-pci-slave: add support to delete a vhost-pci device Wei Wang
2017-05-12 8:35 ` [Qemu-devel] [PATCH v2 15/16] vhost-pci-net: tell the driver that it is ready to send packets Wei Wang
2017-05-12 8:35 ` [Qemu-devel] [PATCH v2 16/16] vl: enable vhost-pci-slave Wei Wang
2017-05-12 9:30 ` [Qemu-devel] [PATCH v2 00/16] Vhost-pci for inter-VM communication no-reply
2017-05-16 15:21 ` Michael S. Tsirkin
2017-05-16 6:46 ` Jason Wang
2017-05-16 7:12 ` [Qemu-devel] [virtio-dev] " Wei Wang
2017-05-17 6:16 ` Jason Wang
2017-05-17 6:22 ` Jason Wang [this message]
2017-05-18 3:03 ` Wei Wang
2017-05-19 3:10 ` [Qemu-devel] [virtio-dev] " Jason Wang
2017-05-19 9:00 ` Wei Wang
2017-05-19 9:53 ` Jason Wang
2017-05-19 20:44 ` Michael S. Tsirkin
2017-05-23 11:09 ` Wei Wang
2017-05-23 15:15 ` Michael S. Tsirkin
2017-05-19 15:33 ` Stefan Hajnoczi
2017-05-22 2:27 ` Jason Wang
2017-05-22 11:46 ` Wang, Wei W
2017-05-23 2:08 ` Jason Wang
2017-05-23 5:47 ` Wei Wang
2017-05-23 6:32 ` Jason Wang
2017-05-23 10:48 ` Wei Wang
2017-05-24 3:24 ` Jason Wang
2017-05-24 8:31 ` Wei Wang
2017-05-25 7:59 ` Jason Wang
2017-05-25 12:01 ` Wei Wang
2017-05-25 12:22 ` Jason Wang
2017-05-25 12:31 ` [Qemu-devel] [virtio-dev] " Jason Wang
2017-05-25 17:57 ` Michael S. Tsirkin
2017-06-04 10:34 ` Wei Wang
2017-06-05 2:21 ` Michael S. Tsirkin
2017-05-25 14:35 ` [Qemu-devel] " Eric Blake
2017-05-26 4:26 ` Jason Wang
2017-05-19 16:49 ` Michael S. Tsirkin
2017-05-22 2:22 ` Jason Wang
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