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Date: Sun, 12 Oct 2014 21:50:59 +0200 From: Or Gerlitz <ogerlitz@...lanox.com> To: yinpeijun <yinpeijun@...wei.com> CC: <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>, <lichunhe@...wei.com>, <wangfakai@...wei.com> Subject: Re: vxlan gro problem ? 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. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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