1. ®
®
Xen Community Update
Ian Pratt,
Citrix Systems and Chairman of Xen.org

2. Xen Summit Program Committee ®
Boris Quiroz Justin Ryan
Anil Madhavapeddy Tim Mueting
Dan Magenheimer Hitoshi Matsumoto
Jose Renato Santos Sang-bum Suh
Hitoshi Oi Patrick Colp
Pasi Karkkainen
2

3. Xen Summit Agenda – Day 1 ®
9:00 – 9:15 Welcome from AMD 13:30 – 14:00 Case Study: IaaS using XCP and
XAPI
9:15 – 10:00 Xen Community Update
14:00 – 14:30 VastSky – Cluster Storage
10:00- 10:15 Xen Project Update System for XCP
10:15 – 10:45 BREAK 14:30 – 15:00 Sheng Liang Building an Infra. as
10:45 – 11:15 AMD, Xen, and Virtual. a Service Cloud on XCP
11:15 – 11:45 SleepServer System 15:00 – 15:15 BREAK
11:45 – 12:15 Energy-Efficient Storage in VM 15:15 – 15:45 XRM: Event-based Resource
Environments Management Framework for XCP
12:15 – 13:00 LUNCH 15:45 – 16:15 PVOps Update
13:00 – 13:30 Xen Cloud Platform Project 16:15 – 16:45 Xen Scheduler
Update 16:45 – 17:15 PCI Express Support in QEMU
3

4. Event Party ®
Dave and Buster's Party
April 28: 6 – 9 pm
Printed Directions Available
Free Pool / Buffet / Game Card / 3 Drinks
(tickets at door)
4

5. Xen Summit Agenda – Day 2 ®
9:30 – 10:00 GoGrid and Xen 14:15 – 14:45 Fuzzy Control Theory to
Resource Management
10:00 – 10:45 Open Source Cloud Computing
14:45 - 15:15 Update on Transcendent Memory
10:45 – 11:00 BREAK in Xen
11:00 - 11:30 Supporting Soft-Real Time Tasks 15:15 - 15:25 BREAK
11:30 – 12:15 Embedded and Communication 15:25 – 15:45 Neon Project
Workloads
15:45 – 16:15 Xenalyze: Analyze Xen Traces
12:15 - 13:00 LUNCH
16:15 – 16:45 Evolving New Configuration Tools
13:00 – 13:30 Graphics Passthrough Challenges for IOV Network Devices
13:30 – 14:15 Guest NUMA Support 16:45– 17:15 libxenlight
17:15 - 17:30 Closing Presentation - Ian Pratt

6. Xen.org Events 2010 ®
Xen Summit Asia 2010
Seoul, Korea on Nov 2-3
Sponsored by Samsung & Korea University
Xen Directions
South America 2010 in Sao Paulo, Brazil on Aug 31 –
Sept 1
North America 2010 in Boston, MA on Nov 9 as part of
LinuxCon
6

7. Xen.org Events 2010 Cont'd ®
Xen.org Booth Participation
Citrix Synergy in SF, CA on May 11 – 13
● Zenoss and VMOps in booth
WorldIT Show in Seoul, Korea on May 25 – 28
SouthEast LinuxFest in Spartanburg, SC on June 12 – 13
● Speaking Session on Xen.org
Contact Stephen Spector to support a Xen.org booth at a local
event
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8. Outline ®
Project Status
New Xen 4.0 Features
Xen Cloud Platform
Xen Client Initiative

9. The Xen Advisory Board ®
Fujitsu and VA Linux joined the Xen Advisor
Board in November 2009, in recognition of
their many contributions to the Xen project

10. Xen Today ®
~20% enterprise server market share
>80% of the Public Cloud is Xen based
World's largest virtualization deployments are Xen based
Development Community: over 50 Companies,
25 Universities, from 25 Countries, ~250 developers
More than 20,000 code submissions
Used in Severs, Desktops, Laptops, Storage Appliances,
Network Appliances and Smart Phones
x86, IA64, ARM support

11. ®
Xen Powers the World’s Infrastructure Clouds
“ Xen is great. It’s powerful
and easy to use. But most
important is the very active
community around it.
That was a very big reason
for us in selecting Xen.
Werner Vogels
CTO, Amazon.com ”

12. Xen Tops Performance Comparisons ®
“Xen is the Porsche of hypervisors”
Keith Ward, Virtualization Review
“Xen outperforms VMware ESX 3.5
by 41% in user scalability tests.”
The Tolly Group

13. ®
Pioneers of
OS Para-virtualization
Xen Hypervisor
First and Best to
support new
CPU, chipset,
and Smart IO
Technologies

14. ®
®
Xen 4.0

15. Xen 4.0 ®
Released 12 Apr 2010
Reliability, Availability, Scalability
Enhanced MCA support, blktap2, netchannel2
Memory optimizations
pvops privileged domain support
Fault tolerance for VMs

16. Hardware Fault Tolerance ®
Restart-HA monitors hosts
X and VMs to keep apps
running
Hardware Fault Tolerance
X with deterministic replay
or checkpointing
Xen’s Software-Implemented Hardware Fault Tolerance enables true
High Availability for unmodified applications and operating systems

17. Hardware Fault Tolerance ®
University of British Columbia’s “Remus” project is
now in xen 4.0
Smart checkpointing approach yields excellent
performance
VM executes in parallel with checkpoint transmission, with all externally visible
state changes suppressed until checkpoint receipt acknowledged
Checkpoints delta compressed
Checkpointing possible across wide-area, even for multi-
vCPU guests

18. SR-IOV ®
SR-IOV: Single Root IO Virtualization
Virtualization friendly IO devices
High performance, high efficiency, low latency
Enables even the most demanding applications to now be virtualized
Compatible with live relocation via hotplug
World First, demonstrated at Intel Developer Forum in September!

19. SR-IOV NIC Demonstration ®
Dell 10G Switch
Dell R710 Server Dell R710 Server
XenServer and Intel 10G SR-IOV NIC XenServer and Intel 10G SR-IOV NIC
NFS Common
Storage w/OpenFiler
Dell R710 Server
XenServer and Intel 10G SR-IOV NIC
Full 20Gb/s bi-directional throughput to VMs
Low latency, High CPU efficiency
Live relocation between hosts - Even hosts with different NICs

20. Network Performance ®
201% Type-0
123% 103% 100%
s/w only basic smart SR-IOV native
NIC NIC
•
New Smart NICs reduce CPU overhead substantially
• Care must be taken with SR-IOV NICs to ensure benefits
of VM portability and live relocation are not lost
• Need for an industry standard for “driver plugins”

21. ®
®
Xen Cloud Platform

22. Xen Cloud Platform (XCP) ®
XCP Expands Xen.org’s scope beyond the core hypervisor, to
create a full virtual infrastructure layer for Cloud deployments
Simplify and streamline use of Xen by Cloud providers and vendors
Promote greater standardisation of components between vendors
Advanced virtual infrastructure to enable Virtual Private
Datacenters rather than just Virtual Private Servers
Multi-tenant hosts, networking, storage, etc
Promote interoperability between xen-based clouds and other clouds
Drive standards activities via DMTF

23. August 2009 XCP Announcement ®

24. ®
Where Xen Cloud Platform Fits
Management API
& OVF Format
VM
VM VM
VM
VM VM
Mgt
State Mgt VM
State
Mgt
Resource Pool VM
State
Mgt
State
VM

25. XCP 0.2 ®
Xen 3.4; Linux 2.6.27; optimized dom0 file system
xapi toolstack
Resource Pools; VM, host, networking and storage management;
snapshots and checkpoints; live and persistent performance
statistics; status alerting; role-based access control; OVF/CIM
support
Windows PV Drivers; Full installer etc.
Open vSwitch

26. ®
New Open vSwitch
Isolation · Resource control · Multi-tenancy · Visibility · Security
VM VM VM VM VM VM VM VM VM VM VM
Hypervisor Hypervisor Hypervisor
• Open Source Virtual Switch maintained at www.openvswitch.org
• Rich layer 2 feature set

27. ®
Distributed vSwitch
Built-in policy-based ACLs move with VMs
VM VM VM VM VM VM VM VM VM VM VM
Hypervisor Hypervisor
Virtual Interface (VIF) {MAC, IP} ACLs Hypervisor
permit tcp 10.0.0.0 0.0.0.255 10.20.0.0 0.0.0.255 eq domain
permit tcp 192.168.0.0 0.0.0.255 10.20.0.0 0.0.0.255 eq domain
permit tcp 172.16.0.0 0.0.0.255 10.20.0.0 0.0.0.255 eq domain
permit udp 10.0.0.0 0.0.0.255 10.20.0.0 0.0.0.255 eq domain
permit udp 192.168.0.0 0.0.0.255 10.20.0.0 0.0.0.255 eq domain
permit udp 172.16.0.0 0.0.0.255 10.20.0.0 0.0.0.255 eq domain
permit tcp 10.0.0.0 0.0.0.255 10.20.0.0 0.0.0.255 eq 123
Distributed Virtual Switch

28. ®
Distributed vSwitch
Isolation · Resource control · Multi-tenancy · Visibility · Security
VM VM VM VM VM VM VM VM VM VM VM
Hypervisor Hypervisor Hypervisor
Distributed Virtual Switch
Distributed Virtual Switch
Tenant A
Tenant B

29. XCP 1.0 Plans ®
New Storage Repository plug-ins
For cloud-optimized storage models
libxenlight integration
Enhanced vswitch capabilities
pvops domain0
Better integration of OVF support
Secure boot and attestation
Cloud orchestration and management APIs
Easier complete build environment

30. ®
®
Xen Client Initiative

31. The Xen Client Initiative ®
Formed in 2007 to develop Xen for desktop and laptop
Develop enhanced power management, USB, WiFi,
WWAN, 3D Graphics, fingerprint reader, multi-touch, etc
Support for latest hardware technologies
Tiny footprint hypervisor, Embeddable in Flash memory or
small disk partition
Aiming to make virtualization ubiquitous on client devices...

32. Client Hypervisor Benefits ®
Security, Manageability, Supportability, Auditability
Building Multi-Level Secure systems
Run multiple VMs with policy controlled information flow
● E.g. Personal VM; Corporate VM; VM for web browsing; VM for banking
Trusted hypervisor provides secure isolation
Enables “out-of-band” management and policy enforcement via Service
VMs
Malware detection, remote access, image update, backup, VPN, etc.
ð Requires a true type-1 hypervisor architecture
ð Xen is ideally suited to this!

33. Xen Client Architecture ®
User VM1 User VM2
Control Service
Domain VM
Xen Hypervisor
Audio USB GPU TXT
Disk ACPI NIC
x86 Hardware TPM

34. “Business” & “Personal” Environments ®
Busin Personal
ess
• Locked Down Allows Local App Installs
• No Local App Installs Minimal Management
• Tightly Managed Virus Scanner
• Self-Service Corporate Security Patches
App Installs
No SLA
Self-Service Wipe

35. Conclusions ®
The Xen Community continues to grow from strength
to strength
Xen’s architecture makes it #1 in security, with great
performance
From Cloud to Client
Xen.org’s role is broadening to develop whole
reference platforms, promote standards, interopability