Difference between revisions of "Xen Project Release Features"

From Xen
(Add categories)
(Added Xen 4.2)
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!style="width: 20%;"|Xen 4.0
  
!style="width: 20%;"|Xen 4.0
 
!style="width: 20%;"|Xen 4.1
  
!style="width: 20%;"|Xen 4.1
  +
!style="width: 20%;"|Xen 4.2 (Testing)
 
|-
  
|-
 
|Initial Release
  
|Initial Release
 
|7 April 2010
  
|7 April 2010
 
|25 March 2011
  
|25 March 2011
  +
|TBD
 
|-
  
|-
−
!colspan="3"|<big>Host Limits</big>
 +
!colspan="4"|<big>Host Limits</big>
 
|-
  
|-
 
|Physical CPUs
  
|Physical CPUs
 
|128 <sup>[ [[#Foot0|0]] ]</sup>
  
|128 <sup>[ [[#Foot0|0]] ]</sup>
 
|>255
  
|>255
  +
|4095
 
|-
  
|-
 
|RAM
  
|RAM
 
|1TB
  
|1TB
  +
|5TB
 
|5TB
  
|5TB
 
|-
  
|-
−
!colspan="3"|<big>[[Xen Overview#Guest_Types|Guest Types]]</big>
 +
!colspan="4"|<big>[[Xen Overview#Guest_Types|Guest Types]]</big>
 
|-
  
|-
 
|Paravirtualised<br/><small>Traditional Xen ''PV'' guest</small>
  
|Paravirtualised<br/><small>Traditional Xen ''PV'' guest</small>
  +
|{{Tick}}
 
|{{Tick}}
  
|{{Tick}}
 
|{{Tick}}
  
|{{Tick}}
 
|-
  
|-
 
|HVM Guest <sup>[ [[#Foot1|1]] ]<br/><small>Fully virtualised guest using hardware virtualisation extensions</small>
  
|HVM Guest <sup>[ [[#Foot1|1]] ]<br/><small>Fully virtualised guest using hardware virtualisation extensions</small>
  +
|{{Tick}}
 
|{{Tick}}
  
|{{Tick}}
 
|{{Tick}}
  
|{{Tick}}
 
|-
  
|-
 
|PV-on_HVM Guest <sup>[ [[#Foot1|1]] ]<br/><small>Fully virtualised guest using PV extensions for improved performance</small>
  
|PV-on_HVM Guest <sup>[ [[#Foot1|1]] ]<br/><small>Fully virtualised guest using PV extensions for improved performance</small>
  +
|{{Tick}}
 
|{{Tick}}
  
|{{Tick}}
 
|{{Tick}}
  
|{{Tick}}
 
|-
  
|-
−
!colspan="3"|<big>PV Guest Limits</big>
 +
!colspan="4"|<big>PV Guest Limits</big>
 
|-
  
|-
 
|Virtual CPUs
  
|Virtual CPUs
 
|128
  
|128
 
|>255
  
|>255
  +
|512
 
|-
  
|-
 
|RAM
  
|RAM
  +
|512GB
 
|512GB
  
|512GB
 
|512GB
  
|512GB
 
|-
  
|-
−
!colspan="3"|<big>HVM Guest Limits</big>
 +
!colspan="4"|<big>HVM Guest Limits</big>
 
|-
  
|-
 
|Virtual CPUs
  
|Virtual CPUs
 
|128
  
|128
 
|128
  
|128
  +
|256
 
|-
  
|-
 
|RAM
  
|RAM
  +
|1TB
 
|1TB
  
|1TB
 
|1TB
  
|1TB
 
|-
  
|-
−
!colspan="3"|<big>Toolstack</big>
 +
!colspan="4"|<big>Toolstack</big>
 
|-
  
|-
 
|xend / xm
  
|xend / xm
 
|{{Tick}}
  
|{{Tick}}
 
|{{Tick}}
  
|{{Tick}}
  +
|{{Tick}}<small>deprecated in this release</small>
 
|-
  
|-
 
|[[XL]]
  
|[[XL]]
 
|{{HalfDone}}<small>initial implementation</small>
  
|{{HalfDone}}<small>initial implementation</small>
 
|{{HalfDone}}<small>preview release</small>
  
|{{HalfDone}}<small>preview release</small>
  +
|{{Tick}}
 
|-
  
|-
−
!colspan="3"|<big>Features</big>
 +
!colspan="4"|<big>Features</big>
 
|-
  
|-
 
|Live Migration, Save & Restore
  
|Live Migration, Save & Restore
  +
|{{Tick}}
 
|{{Tick}}
  
|{{Tick}}
 
|{{Tick}}
  
|{{Tick}}
 
|-
  
|-
 
|Memory ballooning
  
|Memory ballooning
  +
|{{Tick}}
 
|{{Tick}}
  
|{{Tick}}
 
|{{Tick}}
  
|{{Tick}}
 
|-
  
|-
 
|[[Blktap2]]
  
|[[Blktap2]]
  +
|{{Tick}}
 
|{{Tick}}
  
|{{Tick}}
 
|{{Tick}}
  
|{{Tick}}
 
|-
  
|-
 
|[[Xen PCI Passthrough|PCI Passthrough]]
  
|[[Xen PCI Passthrough|PCI Passthrough]]
  +
|{{Tick}}
 
|{{Tick}}
  
|{{Tick}}
 
|{{Tick}}
  
|{{Tick}}
 
|-
  
|-
 
|[http://oss.oracle.com/projects/tmem/ TMEM] -- Transcendent Memory
  
|[http://oss.oracle.com/projects/tmem/ TMEM] -- Transcendent Memory
  +
|{{Tick}} <sup>[ [[#Foot2|2]] ]</sup>
 
|{{Tick}} <sup>[ [[#Foot2|2]] ]</sup>
  
|{{Tick}} <sup>[ [[#Foot2|2]] ]</sup>
 
|{{Tick}} <sup>[ [[#Foot2|2]] ]</sup>
  
|{{Tick}} <sup>[ [[#Foot2|2]] ]</sup>
 
|-
  
|-
 
|gdbsx<br/><small>debugger to debug ELF guests</small>
  
|gdbsx<br/><small>debugger to debug ELF guests</small>
  +
|{{Tick}}
 
|{{Tick}}
  
|{{Tick}}
 
|{{Tick}}
  
|{{Tick}}
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|{{HalfDone}}<small>tech preview</small>
  
|{{HalfDone}}<small>tech preview</small>
 
|{{HalfDone}}<small>tech preview</small>
  
|{{HalfDone}}<small>tech preview</small>
  +
|{{HalfDone}}<small>??? needs checking</small>
 
|-
  
|-
 
|Online resize of virtual disks
  
|Online resize of virtual disks
  +
|{{Tick}}
 
|{{Tick}}
  
|{{Tick}}
 
|{{Tick}}
  
|{{Tick}}
 
|-
  
|-
 
|[[Remus]] Fault Tolerance
  
|[[Remus]] Fault Tolerance
  +
|{{Tick}}
 
|{{Tick}}
  
|{{Tick}}
 
|{{Tick}}
  
|{{Tick}}
 
|-
  
|-
 
|Physical CPU Hotplug
  
|Physical CPU Hotplug
  +
|{{Tick}}
 
|{{Tick}}
  
|{{Tick}}
 
|{{Tick}}
  
|{{Tick}}
 
|-
  
|-
 
|Physical Memory Hotplug
  
|Physical Memory Hotplug
  +
|{{Tick}}
 
|{{Tick}}
  
|{{Tick}}
 
|{{Tick}}
  
|{{Tick}}
 
|-
  
|-
 
|Support for PV kernels in bzImage format
  
|Support for PV kernels in bzImage format
  +
|{{Tick}}
 
|{{Tick}}
  
|{{Tick}}
 
|{{Tick}}
  
|{{Tick}}
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|
  
|
 
|{{HalfDone}}<small>prototype</small>
  
|{{HalfDone}}<small>prototype</small>
  +
|{{Tick}}<small>???</small>
 
|-
  
|-
 
|1GB/2MB super page support
  
|1GB/2MB super page support
 
|
  
|
  +
|{{Tick}}
 
|{{Tick}}
  
|{{Tick}}
 
|-
  
|-
 
|x86 Advanced Vector eXtension (AVX)
  
|x86 Advanced Vector eXtension (AVX)
 
|
  
|
  +
|{{Tick}} <sup>[ [[#Foot2|2]] ]</sup>
 
|{{Tick}} <sup>[ [[#Foot2|2]] ]</sup>
  
|{{Tick}} <sup>[ [[#Foot2|2]] ]</sup>
 
|-
  
|-
 
|cpupool<br/><small>advanced partitioning</small>
  
|cpupool<br/><small>advanced partitioning</small>
 
|
  
|
  +
|{{Tick}}
 
|{{Tick}}
  
|{{Tick}}
 
|-
  
|-
 
|memaccess API<br/><small>enabling integration of 3rd party security solutions into Xen virtualized environments</small>
  
|memaccess API<br/><small>enabling integration of 3rd party security solutions into Xen virtualized environments</small>
 
|
  
|
  +
|{{Tick}}
 
|{{Tick}}
  
|{{Tick}}
 
|-
  
|-
 
|Deliver events to PVHVM guests using event channels
  
|Deliver events to PVHVM guests using event channels
 
|
  
|
  +
|{{Tick}}
 
|{{Tick}}
  
|{{Tick}}
 
|-
  
|-
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|gPXE
  
|gPXE
 
|[http://ipxe.org iPXE]
  
|[http://ipxe.org iPXE]
  +
|[http://ipxe.org iPXE] ???
 
|-
  
|-
 
|xentrace<br/><small>performance analysis</small>
  
|xentrace<br/><small>performance analysis</small>
  +
|{{Tick}}
 
|{{Tick}}
  
|{{Tick}}
 
|{{Tick}}
  
|{{Tick}}
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|
  
|
 
|{{Tick}} <sup>[ [[#Foot3|3]] ]</sup>
  
|{{Tick}} <sup>[ [[#Foot3|3]] ]</sup>
  +
|{{Tick}} <sup>[ [[#Foot3|3]] ]</sup> ???
 
|-
  
|-
 
|[[Xen Security Modules : XSM-FLASK|FLASK]]<br/><small>mandatory access control policy providing fine-grained controls over Xen domains, similar to SELinux</small>
  
|[[Xen Security Modules : XSM-FLASK|FLASK]]<br/><small>mandatory access control policy providing fine-grained controls over Xen domains, similar to SELinux</small>
  +
|{{Tick}}
 
|{{Tick}}
  
|{{Tick}}
 
|{{Tick}}
  
|{{Tick}}
 
|-
  
|-
−
!colspan="3"|<big>[[PyGrub]]</big>
 +
!colspan="4"|<big>[[PyGrub]]</big>
 
|-
  
|-
 
|Support for GRUB 2
  
|Support for GRUB 2
  +
|{{Tick}}
 
|{{Tick}}
  
|{{Tick}}
 
|{{Tick}}
  
|{{Tick}}
 
|-
  
|-
 
|Support for /boot on ext4
  
|Support for /boot on ext4
  +
|{{Tick}}
 
|{{Tick}}
  
|{{Tick}}
 
|{{Tick}}
  
|{{Tick}}
 
|-
  
|-
−
!colspan="3"|<big>Third Party</big>
 +
!colspan="4"|<big>Third Party</big>
 
|-
  
|-
 
|[http://libvirt.org libvirt] driver for [[XL]]
  
|[http://libvirt.org libvirt] driver for [[XL]]
 
|
  
|
  +
|{{Tick}}
 
|{{Tick}}
  
|{{Tick}}
 
|}
  
|}

Revision as of 13:11, 16 August 2012

Xen 4.0 Xen 4.1 Xen 4.2 (Testing)
Initial Release 7 April 2010 25 March 2011 TBD
Host Limits
Physical CPUs 128 [ 0 ] >255 4095
RAM 1TB 5TB 5TB
Guest Types
Paravirtualised
Traditional Xen PV guest 		✓ ✓ ✓
HVM Guest [ 1 ]
Fully virtualised guest using hardware virtualisation extensions 		✓ ✓ ✓
PV-on_HVM Guest [ 1 ]
Fully virtualised guest using PV extensions for improved performance 		✓ ✓ ✓
PV Guest Limits
Virtual CPUs 128 >255 512
RAM 512GB 512GB 512GB
HVM Guest Limits
Virtual CPUs 128 128 256
RAM 1TB 1TB 1TB
Toolstack
xend / xm ✓ ✓ ✓deprecated in this release
XL ✓initial implementation ✓preview release ✓
Features
Live Migration, Save & Restore ✓ ✓ ✓
Memory ballooning ✓ ✓ ✓
Blktap2 ✓ ✓ ✓
PCI Passthrough ✓ ✓ ✓
TMEM -- Transcendent Memory ✓ [ 2 ] ✓ [ 2 ] ✓ [ 2 ]
gdbsx
debugger to debug ELF guests 		✓ ✓ ✓
Memory Sharing ✓tech preview ✓tech preview ✓??? needs checking
Online resize of virtual disks ✓ ✓ ✓
Remus Fault Tolerance ✓ ✓ ✓
Physical CPU Hotplug ✓ ✓ ✓
Physical Memory Hotplug ✓ ✓ ✓
Support for PV kernels in bzImage format ✓ ✓ ✓
Credit 2 Scheduler
designed for latency-sensitive workloads and very large systems. 		✓prototype ✓???
1GB/2MB super page support ✓ ✓
x86 Advanced Vector eXtension (AVX) ✓ [ 2 ] ✓ [ 2 ]
cpupool
advanced partitioning 		✓ ✓
memaccess API
enabling integration of 3rd party security solutions into Xen virtualized environments 		✓ ✓
Deliver events to PVHVM guests using event channels ✓ ✓
HVM PXE Stack gPXE iPXE iPXE ???
xentrace
performance analysis 		✓ ✓ ✓
qemu based disk backend (qdisk) for XL
 ✓ [ 3 ] ✓ [ 3 ] ???
FLASK
mandatory access control policy providing fine-grained controls over Xen domains, similar to SELinux 		✓ ✓ ✓
PyGrub
Support for GRUB 2 ✓ ✓ ✓
Support for /boot on ext4 ✓ ✓ ✓
Third Party
libvirt driver for XL ✓ ✓

[ 0 ] Compile time limit, can be increased
[ 1 ] Requires hardware virtualisation support
[ 2 ] Disabled by default (enable with hypervisor command line option)
[ 3 ] Used as a fallback if blkback and/or blktap2 are not available

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