Bug 1104926 (input-output-based-numa-scheduling) - [RFE][nova]: I/O (PCIe) Based NUMA Scheduling
Summary: [RFE][nova]: I/O (PCIe) Based NUMA Scheduling
Keywords:
Status: CLOSED ERRATA
Alias: input-output-based-numa-scheduling
Product: Red Hat OpenStack
Classification: Red Hat
Component: openstack-nova
Version: 6.0 (Juno)
Hardware: All
OS: All
high
low
Target Milestone: z2
: 6.0 (Juno)
Assignee: Nikola Dipanov
QA Contact: Sean Toner
URL:
Whiteboard: upstream_milestone_kilo-2 upstream_de...
Depends On:
Blocks: 799011 1038706 1077198 1203160 1228267 1250248
TreeView+ depends on / blocked
 
Reported: 2014-06-05 04:02 UTC by RHOS Integration
Modified: 2023-09-18 09:58 UTC (History)
10 users (show)

Fixed In Version: openstack-nova-2014.2.2-10.el7ost
Doc Type: Enhancement
Doc Text:
Support has been added for intelligent NUMA node placement for guests that have been assigned a host PCI device. PCI I/O devices, such as Network Interface Cards (NICs), can be more closely associated with one processor than another. This is important because there are different memory performance and latency characteristics when accessing memory directly attached to one processor than when accessing memory directly attached to another processor in the same server. With this update, Openstack guest placement can be optimized by ensuring that a guest bound to a PCI device is scheduled to run on a NUMA node that is associated with the guest's pCPU and memory allocation. For example, if a guest's resource requirements fit in a single NUMA node, all guest resources will now be associated with the same NUMA node.
Clone Of:
: 1228267 (view as bug list)
Environment:
Last Closed: 2015-04-07 15:09:18 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)
SRIOV testing (9.25 KB, text/plain)
2015-04-01 19:39 UTC, Sean Toner 		no flags Details
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Links
System ID Private Priority Status Summary Last Updated
Red Hat Issue Tracker OSP-16655 0 None None None 2022-07-09 07:49:17 UTC
Red Hat Product Errata RHSA-2015:0790 0 normal SHIPPED_LIVE Important: openstack-nova security, bug fix, and enhancement update 2015-04-07 19:07:41 UTC

Description RHOS Integration 2014-06-05 04:02:12 UTC 
Cloned from launchpad blueprint https://blueprints.launchpad.net/nova/+spec/input-output-based-numa-scheduling.

Description:

The NUMA locality of I/O devices is another important characteristic to consider when configuring a high performance, low latency system for NFV workloads.
			
This blueprint aims at combining NUMA based PCIe device information with the CPU/NUMA related topology info being developed in" Virt driver guest NUMA node placement & topology" https://blueprints.launchpad.net/nova/+spec/virt-driver-numa-placement . 
					
The proposal is to extend the nova pci_devices database with a NUMA cell field. This will be done in the libvirt driver. 

The NUMA filter (in development) will be extended to query the nova.pci_devices to check on the permitted NUMA allocation.

Specification URL (additional information):

None
Comment 14 Summer Long 2015-03-24 23:39:58 UTC 
Done, thank you.
Comment 16 Sean Toner 2015-04-01 19:39:51 UTC 
Created attachment 1009835 [details]
SRIOV testing
Comment 22 errata-xmlrpc 2015-04-07 15:09:18 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/RHSA-2015-0790.html
Comment 24 Red Hat Bugzilla 2023-09-18 00:10:43 UTC 
The needinfo request[s] on this closed bug have been removed as they have been unresolved for 120 days
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