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List:       openvswitch-dev
Subject:    [ovs-dev] segmentation fault in openvswitch
From:       kevin.traynor () intel ! com (Traynor, Kevin)
Date:       2015-06-30 13:15:11
Message-ID: BC0FEEC7D7650749874CEC11314A88F74517EBC6 () IRSMSX104 ! ger ! corp ! intel ! com
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> -----Original Message-----
> From: dev [mailto:dev-bounces at openvswitch.org] On Behalf Of
> ravali.burra at wipro.com
> Sent: Tuesday, June 30, 2015 7:39 AM
> To: dev at openvswitch.org
> Subject: [ovs-dev] segmentation fault in openvswitch
> 
> Hi Team,
> From below link https://access.redhat.com/documentation/en-
> US/Red_Hat_Enterprise_Linux/6/html-
> single/Virtualization_Tuning_and_Optimization_Guide/index.html
> In section 4.5: Multi-queue virtio-net works well for incoming traffic, but
> can occasionally hurt performance for outgoing traffic. Enabling multi-queue
> virtio-net increases the total throughput, and in parallel increases CPU
> consumption.
> So for configuring multi-queue virtio-net for vhost-user I have applied the
> patch from https://lists.gnu.org/archive/html/qemu-devel/2015-
> 05/msg05657.html .
> 
> After applying the patch and running the QEMU command I am able to see the
> segmentation fault in openvswitch.
> 
> Can you just let us know how to overcome this.

Multiqueue vhost-user support is not added to DPDK or OVS yet. It should be
part of DPDK 2.2 and then we can add support to OVS.

> 
> Thanks & Regards,
> Ravali
> 
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