SRIOV scheduling with NIC capabilities

Registered by James Chapman on 2014-10-28

There is a per packet overhead associated with ethernet based packet processing, examples of this processing are packet checksum management, protocol segmentation and vlan offloads.

Modern network controllers (NIC) can offload some of this overhead to hardware (HW) that resides on the NIC. Offloading network processing to HW reduces CPU utilisation and network latencies, providing a more efficient system.

Guests with network processing workloads can optimise their configuration by availing of the hosts NIC offload capabilities. To avail of this optimal configuration, its important that a guest with NIC offload requirements is associated with a host platform NIC that provides the required offload capabilities, especially when the guest might need to perform within certain cpu utilisation, throughput or latency tresholds.

This blueprint will add the following support to Openstack:
(1) Discover and manage the usage of NIC HW offloads capabilities of its compute nodes
(2) Add support to guest scheduling/filtering that ensures a guest with NIC offload requirements is associated with a compute node NIC that provides the required offloads.
(3) Add support to guest scheduling/filtering that ensures a guest with NIC link speed requirements is associated with a compute node NIC that provides the required link speed.

Blueprint information

Status:
Started
Approver:
None
Priority:
Undefined
Drafter:
Adrian Hoban
Direction:
Needs approval
Assignee:
James Chapman
Definition:
New
Series goal:
None
Implementation:
Started
Milestone target:
None
Started by
James Chapman on 2015-04-29

Related branches

Sprints

Whiteboard

Gerrit topic: https://review.openstack.org/#q,topic:bp/SRIOV,n,z

Addressed by: https://review.openstack.org/135331
    SRIOV scheduling with NIC capabilities

Removing milestone as blueprint is not get complete. In fact the nova-spec is still being reviewed. --johnthetubaguy 22nd June 2015

(?)

Work Items

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