From: Or Gerlitz <ogerlitz@mellanox.com>
To: yinpeijun <yinpeijun@huawei.com>
Cc: <netdev@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<lichunhe@huawei.com>, <wangfakai@huawei.com>
Subject: Re: vxlan gro problem ?
Date: Sun, 12 Oct 2014 21:50:59 +0200 [thread overview]
Message-ID: <543ADBA3.5030305@mellanox.com> (raw)
In-Reply-To: <5434FA02.8070608@huawei.com>
On 10/8/2014 10:46 AM, yinpeijun wrote:
> Hi all,
> recently Linux 3.14 has been released and I find the networking has added udp gro and vxlan gro funtion, then I use the redhat 7.0(there is also add this funtion)
> to test, I use kernel vxlan module and create a vxlan device then attach the device to ovs bridge , the configure as follow:
> root@25:~$ ip link
> 15: vxlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1450 qdisc noqueue master ovs-system state UNKNOWN mode DEFAULT
> link/ether be:e1:ae:3d:8b:f2 brd ff:ff:ff:ff:ff:ff
> 16: vnet0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1400 qdisc mq master ovs-system state UNKNOWN mode DEFAULT qlen 5000
>
> root@25:~$ ovs-vsctl show
> aa1294f3-9952-4393-b2b5-54e9a6eb76ee
> Bridge ovs-vx
> Port ovs-vx
> Interface ovs-vx
> type: internal
> Port "vnet0"
> Interface "vnet0"
> Port "vxlan0"
> Interface "vxlan0"
> ovs_version: "2.0.2"
>
> vnet0 is a vm backend device, and the end is the same configuration. then I use netperf to test throughput in vm (netperf -H **** -t TCP_STREAM -l 10 -- -m 1460),
> the result is 3-4 Gbit/sec, the improvement is not obvious, and I also confused there is no aggregation packets (length > mtu) in the end vm. so I want to know what
> wrong ? or how to test the function ?
>
As things are set in 3.14 and AFAIK also in RHEL 7.0, for GRO/VXLAN to
come into play you need to run over a NIC which supports RX checksum
offload too, is this the case?
Also, the configuration you run with isn't the typical play of VXLAN
with OVS... I didn't try it out and this week being out to LPC.
Did you try the usual track of running OVS VXLAN port?e.g as explained
in the Example section of [1]
Or.
[1] http://community.mellanox.com/docs/DOC-1446
Or.
next prev parent reply other threads:[~2014-10-12 20:06 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-08 8:46 vxlan gro problem ? yinpeijun
2014-10-12 19:50 ` Or Gerlitz [this message]
2014-10-13 9:14 ` yinpeijun
2014-10-13 20:56 ` Or Gerlitz
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