Bug 1153440 - [RFE][nova]: libvirt: virtio-net multiqueue
Summary: [RFE][nova]: libvirt: virtio-net multiqueue
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat OpenStack
Classification: Red Hat
Component: openstack-nova
Version: unspecified
Hardware: Unspecified
OS: Unspecified
high
low
Target Milestone: ga
: 8.0 (Liberty)
Assignee: Vladik Romanovsky
QA Contact: Gabriel Szasz
URL: https://blueprints.launchpad.net/nova...
Whiteboard: upstream_milestone_liberty-3 upstream...
: 1144606 1284533 (view as bug list)
Depends On:
Blocks: 1217232 1252514 1265219 1284416 1291351 1291352
TreeView+ depends on / blocked
 
Reported: 2014-10-16 04:02 UTC by RHOS Integration
Modified: 2023-02-22 23:02 UTC (History)
18 users (show)

Fixed In Version: openstack-nova-12.0.0-2.el7ost
Doc Type: Enhancement
Doc Text:
Clone Of:
: 1291351 1291352 (view as bug list)
Environment:
Last Closed: 2016-04-15 13:45:19 UTC
Target Upstream Version:
Embargoed:


Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Knowledge Base (Solution) 1533903 0 None None None Never
Red Hat Product Errata RHBA-2016:0636 0 normal SHIPPED_LIVE Red Hat OpenStack Platform 8 release candidate Bugfix Advisory 2016-04-15 17:45:07 UTC

Description RHOS Integration 2014-10-16 04:02:12 UTC
Cloned from launchpad blueprint https://blueprints.launchpad.net/nova/+spec/libvirt-virtio-net-multiqueue.

Description:

Add supoort to enable the virtio-net multiqueue feature for guest
    instances.
    
    With virtio-net multiqueue enabled network performance can be scaled
    accross number of vCPUs, by transfering the packets through multiple virtqueue
    pairs at a time.
    
    Libvirt driver will set the number of queues equal to the number of guest VCPUs
    
    To control this feature, the following should be set in the flavour extra specs:
    
    hw:vif_multiqueue_enabled=true|disabled
    
    This setting can be overriden by the image metadata property if the feature
    is enabled in the extra specs:
    
    hw_vif_mutliqueue_enabled=true|false


Specification URL (additional information):

None

Comment 1 Stephen Gordon 2015-03-13 19:30:18 UTC
*** Bug 1144606 has been marked as a duplicate of this bug. ***

Comment 3 Vladik Romanovsky 2015-09-08 16:41:53 UTC
The steps to enable the functionality differs from the original proposal.

Currently, the feature can only be enable or disabled for all vNICs of an instance.

A new parameter has been added to the image properties, for the users
to control the virtio-net multiqueue feature, to be able to enable or disable it.

    hw_vif_multiqueue_enabled=true|false  (default false)

The number of queues will match the number of vCPUs, defined for the instance.	

NOTE: Virtio-net multiqueue should be enabled in the guest OS manually, using	ethtool. For example:

    ethtool -L <NIC> combined #num_of_queues

Comment 6 Stephen Gordon 2015-12-14 16:32:18 UTC
*** Bug 1284533 has been marked as a duplicate of this bug. ***

Comment 10 errata-xmlrpc 2016-04-15 13:45:19 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://rhn.redhat.com/errata/RHBA-2016-0636.html


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