Bug 1104926 (input-output-based-numa-scheduling)

Summary:

[RFE][nova]: I/O (PCIe) Based NUMA Scheduling

Product:

Red Hat OpenStack

Reporter:

RHOS Integration <rhos-integ>

Component:

openstack-nova

Assignee:

Nikola Dipanov <ndipanov>

Status:

CLOSED ERRATA

QA Contact:

Sean Toner <stoner>

Severity:

low

Docs Contact:

Priority:

high

Version:

6.0 (Juno)

CC:

eglynn, markmc, ndipanov, nlevinki, sclewis, sferdjao, sgordon, slong, tvvcox, yeylon

Target Milestone:

Keywords:

FutureFeature, ZStream

Target Release:

6.0 (Juno)

Hardware:

All

OS:

All

Whiteboard:

upstream_milestone_kilo-2 upstream_definition_approved upstream_status_implemented

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.

Story Points:

---

Clone Of:

Clones:

1228267 (view as bug list)

Environment:

Last Closed:

2015-04-07 15:09:18 UTC

Type:

---

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:

799011, 1038706, 1077198, 1203160, 1228267, 1250248

Attachments:

Description	Flags
SRIOV testing	none

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