KVM Network Performance
This session scheduled with "VFIO - are we there yet?":
https:/
In this presentation we will discuss ongoing work to improve KVM networking I/O performance and scalability. We will share performance numbers taken using both vertical (multiple interfaces) and horizontal (many VMs) to highlight existing bottleneck's in the KVM stack as well as improvements observed with pending changes. These experiments have shown impressive gains can be obtained by using per-cpu vhost threads and leveraging hardware offloads. These offloads include flow steering and interrupt affinity.
This presentation intends to highlight ongoing research from various groups working on the Linux kernel, KVM, and upper layer stack. Finally we will propose a path to include these changes in the upstream projects. This should be of interest to KVM developers, kernel developers, and anyone using a virtualized environment.
Topic Lead: John Fastabend <email address hidden>
Required attendees: Vivek Kashyap, Shyam Iyer
Blueprint information
- Status:
- Complete
- Approver:
- None
- Priority:
- Undefined
- Drafter:
- None
- Direction:
- Needs approval
- Assignee:
- None
- Definition:
- Superseded
- Series goal:
- None
- Implementation:
-
Unknown
- Milestone target:
- None
- Started by
- Completed by
- Grant Likely
