Difference between revisions of "Xen Project Release Features"
From Xen
(AVX is not enabled by default in 4.1) |
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!style="width: 20%;"|Xen 4.1 |
!style="width: 20%;"|Xen 4.1 |
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− | + | |Initial Release |
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|7 April 2010 |
|7 April 2010 |
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|25 March 2011 |
|25 March 2011 |
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!colspan="3"|<big>Host Limits</big> |
!colspan="3"|<big>Host Limits</big> |
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− | + | |Physical CPUs |
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|128 <sup>[ [[#Foot1|1]] ]</sup> |
|128 <sup>[ [[#Foot1|1]] ]</sup> |
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|>255 |
|>255 |
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− | + | |RAM |
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|1TB |
|1TB |
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|5TB |
|5TB |
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!colspan="3"|<big>[[Xen Overview#Guest_Types|Guest Types]]</big> |
!colspan="3"|<big>[[Xen Overview#Guest_Types|Guest Types]]</big> |
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− | + | |Paravirtualised<br/><small>Traditional Xen ''PV'' guest</small> |
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|{{Tick}} |
|{{Tick}} |
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|{{Tick}} |
|{{Tick}} |
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− | + | |HVM Guest <sup>[ [[#Foot0|0]] ]<br/><small>Fully virtualised guest using hardware virtualisation extensions</small> |
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|{{Tick}} |
|{{Tick}} |
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|{{Tick}} |
|{{Tick}} |
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− | + | |PV-on_HVM Guest <sup>[ [[#Foot0|0]] ]<br/><small>Fully virtualised guest using PV extensions for improved performance</small> |
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|{{Tick}} |
|{{Tick}} |
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|{{Tick}} |
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!colspan="3"|<big>PV Guest Limits</big> |
!colspan="3"|<big>PV Guest Limits</big> |
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− | + | |Virtual CPUs |
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|128 |
|128 |
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|>255 |
|>255 |
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− | + | |RAM |
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|512GB |
|512GB |
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|512GB |
|512GB |
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!colspan="3"|<big>HVM Guest Limits</big> |
!colspan="3"|<big>HVM Guest Limits</big> |
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− | + | |Virtual CPUs |
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|128 |
|128 |
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|128 |
|128 |
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− | + | |RAM |
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|1TB |
|1TB |
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|1TB |
|1TB |
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!colspan="3"|<big>Toolstack</big> |
!colspan="3"|<big>Toolstack</big> |
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− | + | |xend / xm |
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|{{Tick}} |
|{{Tick}} |
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|{{Tick}} |
|{{Tick}} |
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− | + | |[[XL]] |
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|Initial implementation |
|Initial implementation |
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|Preview release |
|Preview release |
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!colspan="3"|<big>Features</big> |
!colspan="3"|<big>Features</big> |
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− | + | |Live Migration, Save & Restore |
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|{{Tick}} |
|{{Tick}} |
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|{{Tick}} |
|{{Tick}} |
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− | + | |Memory ballooning |
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|{{Tick}} |
|{{Tick}} |
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|{{Tick}} |
|{{Tick}} |
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− | + | |[[Blktap2]] |
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|{{Tick}} |
|{{Tick}} |
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|{{Tick}} |
|{{Tick}} |
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− | + | |[[Xen PCI Passthrough|PCI Passthrough]] |
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|{{Tick}} |
|{{Tick}} |
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|{{Tick}} |
|{{Tick}} |
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− | + | |[http://oss.oracle.com/projects/tmem/ TMEM] -- Transcendent Memory |
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|{{Tick}} <sup>[ [[#Foot2|2]] ]</sup> |
|{{Tick}} <sup>[ [[#Foot2|2]] ]</sup> |
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|{{Tick}} <sup>[ [[#Foot2|2]] ]</sup> |
|{{Tick}} <sup>[ [[#Foot2|2]] ]</sup> |
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− | + | |gdbsx<br/><small>debugger to debug ELF guests</small> |
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|{{Tick}} |
|{{Tick}} |
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|{{Tick}} |
|{{Tick}} |
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− | + | |Memory Sharing |
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|{{Tick}} <sup>[ [[#Foot3|3]] ]</sup> |
|{{Tick}} <sup>[ [[#Foot3|3]] ]</sup> |
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|{{Tick}} <sup>[ [[#Foot3|3]] ]</sup> |
|{{Tick}} <sup>[ [[#Foot3|3]] ]</sup> |
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− | + | |Online resize of virtual disks |
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|{{Tick}} |
|{{Tick}} |
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|{{Tick}} |
|{{Tick}} |
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− | + | |[[Remus]] Fault Tolerance |
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|{{Tick}} |
|{{Tick}} |
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|{{Tick}} |
|{{Tick}} |
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− | + | |Physical CPU Hotplug |
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|{{Tick}} |
|{{Tick}} |
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|{{Tick}} |
|{{Tick}} |
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− | + | |Physical Memory Hotplug |
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|{{Tick}} |
|{{Tick}} |
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|{{Tick}} |
|{{Tick}} |
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− | + | |Support for PV kernels in bzImage format |
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|{{Tick}} |
|{{Tick}} |
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|{{Tick}} |
|{{Tick}} |
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− | + | |[[Credit2 Scheduler Development|Credit 2 Scheduler]]<br/><small>designed for latency-sensitive workloads and very large systems.</small> |
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|{{Tick}} <sup>[ [[#Foot4|4]] ]</sup> |
|{{Tick}} <sup>[ [[#Foot4|4]] ]</sup> |
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− | + | |1GB/2MB super page support |
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|{{Tick}} |
|{{Tick}} |
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− | + | |x86 Advanced Vector eXtension (AVX) |
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|{{Tick}} <sup>[ [[#Foot2|2]] ]</sup> |
|{{Tick}} <sup>[ [[#Foot2|2]] ]</sup> |
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− | + | |cpupool<br/><small>advanced partitioning</small> |
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|{{Tick}} |
|{{Tick}} |
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− | + | |memaccess API<br/><small>enabling integration of 3rd party security solutions into Xen virtualized environments</small> |
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|{{Tick}} |
|{{Tick}} |
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− | + | |Deliver events to PVHVM guests using event channels |
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|{{Tick}} |
|{{Tick}} |
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− | + | |HVM PXE Stack |
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|gPXE |
|gPXE |
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|[http://ipxe.org iPXE] |
|[http://ipxe.org iPXE] |
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− | + | |xentrace<br/><small>performance analysis</small> |
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|{{Tick}} |
|{{Tick}} |
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|{{Tick}} |
|{{Tick}} |
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− | + | |qemu based disk backend (''qdisk'') for [[XL]]<br/> |
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|{{Tick}} <sup>[ [[#Foot5|5]] ]</sup> |
|{{Tick}} <sup>[ [[#Foot5|5]] ]</sup> |
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− | + | |[[Xen Security Modules : XSM-FLASK|FLASK]]<br/><small>mandatory access control policy providing fine-grained controls over Xen domains, similar to SELinux</small> |
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|{{Tick}} |
|{{Tick}} |
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|{{Tick}} |
|{{Tick}} |
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− | !<big>[[PyGrub]]</big> |
+ | !colspan="3"|<big>[[PyGrub]]</big> |
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− | + | |Support for GRUB 2 |
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|{{Tick}} |
|{{Tick}} |
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|{{Tick}} |
|{{Tick}} |
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− | + | |Support for /boot on ext4 |
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|{{Tick}} |
|{{Tick}} |
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|{{Tick}} |
|{{Tick}} |
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− | !<big>Third Party</big> |
+ | !colspan="3"|<big>Third Party</big> |
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− | + | |[http://libvirt.org libvirt] driver for [[XL]] |
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|{{Tick}} |
|{{Tick}} |
Revision as of 11:24, 25 June 2012
Xen 4.0 | Xen 4.1 | |
---|---|---|
Initial Release | 7 April 2010 | 25 March 2011 |
Host Limits | ||
Physical CPUs | 128 [ 1 ] | >255 |
RAM | 1TB | 5TB |
Guest Types | ||
Paravirtualised Traditional Xen PV guest |
✓ | ✓ |
HVM Guest [ 0 ] Fully virtualised guest using hardware virtualisation extensions |
✓ | ✓ |
PV-on_HVM Guest [ 0 ] Fully virtualised guest using PV extensions for improved performance |
✓ | ✓ |
PV Guest Limits | ||
Virtual CPUs | 128 | >255 |
RAM | 512GB | 512GB |
HVM Guest Limits | ||
Virtual CPUs | 128 | 128 |
RAM | 1TB | 1TB |
Toolstack | ||
xend / xm | ✓ | ✓ |
XL | Initial implementation | Preview release |
Features | ||
Live Migration, Save & Restore | ✓ | ✓ |
Memory ballooning | ✓ | ✓ |
Blktap2 | ✓ | ✓ |
PCI Passthrough | ✓ | ✓ |
TMEM -- Transcendent Memory | ✓ [ 2 ] | ✓ [ 2 ] |
gdbsx debugger to debug ELF guests |
✓ | ✓ |
Memory Sharing | ✓ [ 3 ] | ✓ [ 3 ] |
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. |
✓ [ 4 ] | |
1GB/2MB super page support | ✓ | |
x86 Advanced Vector eXtension (AVX) | ✓ [ 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 |
xentrace performance analysis |
✓ | ✓ |
qemu based disk backend (qdisk) for XL |
✓ [ 5 ] | |
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 ] Required hardware virtualisation support
[ 1 ] Compile time limit, can be increased
[ 2 ] Disabled by default (enable with hypervisor command line option)
[ 3 ] Initial implementation (tech preview)
[ 4 ] Prototype
[ 5 ] Used as a fallback if blkback and/or blktap2 are not available