Intel Accelerating the Path to the Guest Legal Disclaimers Intel processor numbers are not a measure of performance Processor numbers differentiate features within each processor family not across different processor families Go to ID: 808531 Download
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Intel. Accelerating the Path to the Guest. Legal Disclaimers. Intel . processor numbers are not a measure of performance. Processor numbers differentiate features within each processor family, not across different processor families: Go to: .
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Slide1
Maryam Tahhan and Kevin Traynor Intel
Accelerating the Path to the Guest
Slide2Legal Disclaimers
Intel
processor numbers are not a measure of performance. Processor numbers differentiate features within each processor family, not across different processor families: Go to:
Learn About Intel® Processor NumbersIntel, the Intel logo and Xeon are trademarks of Intel Corporation in the U.S. and/or other countries.*Other names and brands may be claimed as the property of others.Copyright © 2014 Intel Corporation. All rights reserved
Intel Confidential
Slide3Agenda
NFV
Guest access methods
SummaryQ&A
Slide4Network Function Virtualization (NFV)
* http
://www.intel.com/content/www/us/en/communications/internet-minute-infographic.html
Slide5Legacy virtio-net
virtio-net is a para-virtualized network driver based on
v
irtio. A guest with a virtio_net driver, shares a number of virtqueues with QEMU.The mechanism by which traffic is passed is comprised of two parts: The datapath.The notification path.GuestQEMUOperating SystemVirtio Driver
TX
R
X
Kernel Space
OVS Datapath
Tap
KVM
1
2
Eth X
1
2
Slide6Intel®
Data Plane Development Kit and ivshmem
Intel® DPDK
ivshmem
Slide7Shared Memory
Memory
QEMU
Operating System ivshmemRX
TX
Kernel Space
OVS Datapath
DPDK Ring API
DPDK PMD
OVS client
DPDK Ring API
1GB
PCI dev (04:00.0)
BAR2
mempool
Slide8Intel®
DPDK rings and
ivshmem CharacteristicsCurrentFuture
Slide9VhostNet
QEMU
Operating System
Virtio DriverRXTXKernel SpaceOVS Datapath
Tap
KVM
1
2
Eth X
ioeventfd
irqfd
v
host-net
u
s-vhost
QEMU
Operating System
Virtio Driver
RX
TX
Kernel Space
OVS Datapath
DPDK vhost
KVM
1
2
DPDK x
e
ventfd
link
ioeventfd
CUSE
irqfd
IOCTL
Slide10us-vhost Characteristics
Current
Future
Slide11Use Case Comparison
dpdkr & ivshmem
us-vhost
Slide12Summary
Slide13Q & A
13
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