Hi
Vxlan tunnel based on udp, (TSO support offloads for tcp, NIC support
in default).
in the case of case2 , this is entirely normal performance for standard
ovs2.1.2
Only if you can make essential performance optimization.
________________________________
zhangguanghui 10102
From: discuss<mailto:discuss-boun...@openvswitch.org>
Date: 2014-11-06 00:08
To: FengYu LeiDian<mailto:fengyuleidian0...@gmail.com>
CC: discuss@openvswitch.org<mailto:discuss@openvswitch.org>
Subject: Re: [ovs-discuss] performance drop 60% when using vxlan tunnel
On Tue, Nov 4, 2014 at 11:03 PM, FengYu LeiDian
<fengyuleidian0...@gmail.com> wrote:
> Hi
>
> Env: redhat 6.4, OpenvSwitch-2.1.2, using native
> datapath/linux/openvswitch.ko module
>
> VM1 on host1, VM2 on host2, host1 and host2 are connected by a switch.
> both VM enable virtio/vhost when launching VM
>
> case1:
> VM -> tap -> ovs-bridge -> eth1
>
> case2:
> VM -> tap -> ovs-bridge -> vxlan -> eth1
>
> When using vxlan in case2, iperf performance drop 60%,
Your NIC probably doesn't support offloads (checksum, TSO, etc.) in
the presence of VXLAN.
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