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Bug 1701901

Summary: Provide option to disable EMC in puppet-vswitch
Product: Red Hat OpenStack Reporter: yogananth subramanian <ysubrama>
Component: puppet-vswitchAssignee: yogananth subramanian <ysubrama>
Status: CLOSED ERRATA QA Contact: nlevinki <nlevinki>
Severity: high Docs Contact:
Priority: high    
Version: 13.0 (Queens)CC: fbaudin, jjoyce, jschluet, skramaja, slinaber, tvignaud, vkhitrin, yrachman, ysubrama
Target Milestone: z7Keywords: Triaged, ZStream
Target Release: 13.0 (Queens)   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: puppet-vswitch-8.4.0-2.el7ost Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2019-07-10 13:05:12 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:    
Bug Blocks: 1701937    

Description yogananth subramanian 2019-04-22 12:39:57 UTC 
Description of problem:
Based on observation presented by Andrew Theurer[1],As the number of flows increase, the performance of OvS-DPDK with the Exact Match Cache (EMC) seems to diminish below OvS-DPDK performance with no EMC at all.
Hence an option to disable EMC.

[1] -http://www.openvswitch.org/support/ovscon2018/5/1330-theurer.pdf

Version-Release number of selected component (if applicable):


How reproducible:


Steps to Reproduce:
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Actual results:


Expected results:
emc-insert-inv-prob to 0

Additional info:
Comment 12 errata-xmlrpc 2019-07-10 13:05:12 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2019:1738