Bug 1279525

Summary: [RFE] Add DPDK support in openvswitch in order to implement NUMA node affinity
Product: Red Hat OpenStack Reporter: David Hill <dhill>
Component: openvswitchAssignee: Flavio Leitner <fleitner>
Status: CLOSED DUPLICATE QA Contact: Ofer Blaut <oblaut>
Severity: low Docs Contact:
Priority: medium    
Version: 7.0 (Kilo)CC: apevec, chrisw, dhill, haliu, rhos-maint, rkhan, srevivo
Target Milestone: ---Keywords: FutureFeature, ZStream
Target Release: 8.0 (Liberty)   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: Doc Type: Enhancement
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2017-03-07 21:12:52 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 1335865    
Bug Blocks:    

Description David Hill 2015-11-09 16:15:17 UTC 
Description of problem:
In order to implement NUMA node affinity , DPDK support in openvswitch should be integrated.   Once that is done, openvswitch will run in userland and if a guest is created in a NUMA cell, the attached openvswitch port will be located in the same NUMA cell which will greatly improve performances:

http://openvswitch.org/support/dist-docs/INSTALL.DPDK.md.txt
https://networkbuilders.intel.com/blog/support-for-openstack-kilo-and-latest-open-vswitch-boost-vm-performance-in-new-open-network-platform-v1-4/

Version-Release number of selected component (if applicable):
None

How reproducible:
Always

Steps to Reproduce:
1. openvswitch seems to not support DPDK by default and it has to be explicitly compiled with
2.
3.

Actual results:
Poor performances

Expected results:
Better performances

Additional info:
Comment 3 Panu Matilainen 2016-09-14 13:35:43 UTC 
NUMA support in DPDK 2.2 was broken and had to be disabled. It's fixed in newer DPDK versions also OVS is more NUMA-aware as of 2.6, eg:
https://github.com/openvswitch/ovs/commit/db8f13b0201e992cc4a3aa12799723b19a509b46