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From: Ian Stokes <ian.stokes@intel.com>
To: vkrishnabhat k <vkrishnabhatk@gmail.com>,
	ovs-discuss@openvswitch.org, ovs-dev@openvswitch.org,
	ovs-build@openvswitch.org, users@dpdk.org, dev@dpdk.org
Subject: Re: [dpdk-dev] [ovs-dev] Packet Drop Issue in OVS-DPDK L2FWD Application
Date: Mon, 19 Nov 2018 13:35:08 +0000	[thread overview]
Message-ID: <3ddd6956-4cc1-d10e-59f8-e58db5f5d1d3@intel.com> (raw)
In-Reply-To: <CAF6sE3QxSJk5++aJYK59a_TH6i8iE1QynSXESBk4k-1i+mj2OQ@mail.gmail.com>

On 11/18/2018 8:16 PM, vkrishnabhat k wrote:
> Hi Team,
> 
> I am new to OVS and DPDK. While I am using l2fwd application with OVS and
> DPDK I am seeing packet drop issue in OVS bridge.
> 
> Topology : My topology has Ubuntu machine (Ubuntu 18.04 LTS). I have
> installed Qemu-KVM 2.11.1 version. Also I am using OVS-DPDK. Please find
> the detailed topology attached with this mail. I have bound two NICs (Intel
> 82599ES 10-gigabit ) to dpdk IGB_UIO driver and also have added same ports
> in to OVS bridge "br0". I am trying to send the bidirectional traffic from
> both the port and measure the throughput value for the l2fwd application.
> 

> Could you please help me with below questions to understand l2fwd better.
> 

Hi, just a few questions to clarify, I assume you mean you are running 
the DPDK sample app 'l2fwd' in a Virtual machine that is also connected 
to bridge br0 via a vhostuser port?

> What is the reason for packet drops in OVS bridge ?
> What is the expected throughput value for l2fwd ?
> How to improve the performance of l2fwd to get better throughput value ?
> Is it possible to send or can l2fwd handle layer 7 traffic ?
> 
> I tried tuning performance by adding more number of Rx queues and
> increasing the Rx queue size as per the link "
> http://docs.openvswitch.org/en/latest/intro/install/dpdk/", but it didn't
> help much.
> 

Can you provide what versions of OVS and DPDK are being used in the host 
and VM instances?

> I have attached screen shots of the Topology, DPDK port statistics, OVS
> configurations with this mail.

I don't see these attached, they may have been filtered. Could you copy 
the output in these to the mail in text.

Thanks
Ian

> 
> It will be really great if you could help me with this.
> 
> Look forward to hear from you.
> 
> Thanks in advance.
> 
> Regards,
> Venkat
> 
> 
> 
> _______________________________________________
> dev mailing list
> dev@openvswitch.org
> https://mail.openvswitch.org/mailman/listinfo/ovs-dev
> 

           reply	other threads:[~2018-11-19 13:35 UTC|newest]

Thread overview: expand[flat|nested]  mbox.gz  Atom feed
 [parent not found: <CAF6sE3QxSJk5++aJYK59a_TH6i8iE1QynSXESBk4k-1i+mj2OQ@mail.gmail.com>]

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