LCA13: Citrix Keynote
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Transcript of LCA13: Citrix Keynote
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Mark Heath, VP Products XenServer, Citrix
Lars Kurth, Xen.org Community Manager, Citrix
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Citrix is a cloud
computing
company that
enables mobile
workstyles
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Gartner, 2012
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m o b i l e w o r k s t y l e s & c l o u d s e r v i c e s
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• Efficient resource utilization
• Faster provisioning
• Workload mobility
• Increased uptime
• Enhanced security
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Mark Moerdler, Bernstein 2012
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• Less Space
• Less Energy
• Reduced Cost
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• Even Less Space
• Greener Datacentres
• Even Less Cost
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UBS Global Investment Research, August 7, 2012, James F. Hillier.
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XenServer
X
en
Desk
top
X
en
Ap
p
N
etS
cale
r
C
loud
Pla
tfo
rm
X
en
Clie
nt
X
en
Clie
nt
XT
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Q
ubes O
S
O
racle
VM
H
uaw
ei U
VP
O
pen M
irage
E
rla
ng
On
Xe
n
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• GPLv2 with DCO
• Governance similar to Linux Kernel
• Citrix is the steward of Xen.org
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• < 30% code developed by Citrix
• > 10M open source users
• Xen powers the largest clouds in production
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HW CPUs Memory I/O
VM1
Guest OS
Applications
VM0 (or Dom0)
Dom0 Kernel
Drivers
VM2 VMn
Applications
Guest OS
Applications
Guest OS
Toolstack
Scheduler MMU Timers Interrupts Config
back PV front
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• Make optimum use of the ARM SOC
• Supports 32 and 64 bit
• Small code base
• Avoid x86 “baggage”
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ARM SOC
GIC
v2 GT
2 stage
MMU
I/O
Device Tree describes …
Template
clash
ARM Architecture Features for Virtualization
Hypervisor mode: EL2
Kernel mode: EL1
User mode: EL0
HVC
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ARM Architecture Features for Virtualization ARM SOC
EL2
EL1
EL0
GIC
v2 GT
2 stage
MMU
I/O
Device Tree describes …
Template
clash
HVC
Xen Hypervisor
Dom0
only
Any Xen Guest VM (including Dom0)
Kernel
User Space
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• No need for Emulation
• No user space run-time on data path
• One virtualization mode
• Xen is easy to port
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Stefano Stabellini, Linux Xen ARM Maintainer,2013
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• Fully functional for ARM v7 & v8
• ARM v7: Versatile Express, Arndale & Samsung Chromebook
• ARM v8: Fast Model
• Will be released in Xen 4.3
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m o b i l e w o r k s t y l e s & c l o u d s e r v i c e s
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m o b i l e w o r k s t y l e s & c l o u d s e r v i c e s
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• Good Technology Match
• Platform First
• Creates Opportunities …
– for Citrix
– for the Xen Community
– for the Linaro Community
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