XL vs Xend Feature Comparison: Difference between revisions

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The following compares the featureset of the [[XEND|xend]] toolstack vs the [[XL|xl]] toolstack as of Xen 4.2.
The following compares the featureset of the [[XEND|xend]] toolstack vs the [[XL|xl]] toolstack as of Xen 4.4 and 4.5.


{|class="wikitable" style="text-align: left;" valign="top"
{|class="wikitable" style="text-align: left;" valign="top"
!style="width: 40%;"|
!style="width: 40%;"|
!style="width: 20%;"|xm / xend
!style="width: 20%;"|[[XEND|xm / xend]]
!style="width: 20%;"|xl
!style="width: 20%;"|[[XL|xl]]
|-
|-
!colspan="3"|<big>[[Xen Overview#Guest_Types|Guest Types]]</big>
!colspan="3"|<big>[[Xen Overview#Guest_Types|Guest Types]]</big>
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|HVM guests
|HVM guests
|{{Tick}}
|{{Tick}}
|{{Tick}}
|-
|PVHVM guests
|{{Tick}}
|{{Tick}}
|-
|PVH guests
|{{NotDone}}
|{{Tick}}
|{{Tick}}
|-
|-
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|Live migration and save/restore
|Live migration and save/restore
|{{Tick}}
|{{Tick}}
|{{Tick}}
|-
|Remus Integration
|{{NotDone}} <sup>[ [[#Foot4|4]] ]</sup>
|{{Tick}}
|{{Tick}}
|-
|-
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|{{Tick}}
|{{Tick}}
|{{Tick}}
|{{Tick}}
|-
|Sharing storage across DomU's via <code>w!</code> in virtual machines configuration files in disk settings
|{{Tick}}
|{{NotDone}} <sup>[ [[#Foot1|1]] ]</sup>
|-
|-
|Virtual framebuffer, keyboard and mouse (both para-virtualised and emulated)
|Virtual framebuffer, keyboard and mouse (both para-virtualised and emulated)
|{{Tick}} (includes SDL & VNC support)
|{{Tick}} <sup>[ [[#Foot6|6]] ]</sup>
|{{Tick}} <sup>[ [[#Foot6|6]] ]</sup><sup>[ [[#Foot7|7]] ]</sup>
|{{Tick}} (includes SDL, VNC & SPICE support)
|-
|SPICE framebuffer/console support
|{{NotDone}}
|{{Tick}}
|-
|QXL graphics device support for SPICE
|{{NotDone}}
|{{NotDone}} <sup>[ [[#Foot2|2]] ]</sup>
|-
|-
|PV console devices
|PV console devices
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|{{Tick}}
|{{Tick}}
|-
|-
|PCI passthrough
|PCI device passthrough
|{{Tick}}
|{{Tick}}
|{{Tick}}
|{{Tick}}
|-
|VGA graphics device (GPU) passthrough
|{{Tick}}
|{{Tick}}
|-
|SCSI LUN/Host passthrough (PVSCSI)
|{{Tick}}
|{{NotDone}} <sup>[ [[#Foot2|2]] ]</sup>
|-
|Qemu USB device passthrough via config file (using qemu xen traditional)
|{{Tick}}
|{{Tick}}
|-
|Qemu USB device passthrough via config file (using qemu upstream)
|{{NotDone}}
|{{Tick}}
|-
|Qemu USB device passthrough via hotplug (using qemu xen traditional)
|{{Tick}}
|{{NotDone}} <sup>[ [[#Foot3|3]] ]</sup>
|-
|Qemu USB device passthrough via hotplug (using qemu upstream)
|{{NotDone}}
|{{NotDone}} <sup>[ [[#Foot3|3]] ]</sup>
|-
|Qemu USB device passthrough support for USB 1.1
|{{Tick}}
|{{Tick}}
|-
|Qemu USB device passthrough support for USB 2.0 (qemu upstream)
|{{NotDone}}
|{{Tick}}
|-
|Qemu USB device passthrough support for USB 3.0 (qemu upstream)
|{{NotDone}}
|{{Tick}}
|-
|PVUSB USB 2.0 device passthrough for both PV and HVM guests
|{{Tick}}
|{{NotDone}} <sup>[ [[#Foot3|3]] ]</sup>
|-
|-
!colspan="3"|<big>Device Model Support</big>
!colspan="3"|<big>Device Model Support</big>
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|Stub domain Qemu Xen Traditional Device Model
|Stub domain Qemu Xen Traditional Device Model
|{{Tick}}
|{{Tick}}
|{{Tick}}
|{{Tick}}
|-
|-
|Stub domain Upstream Qemu Device Model
|Stub domain Upstream Qemu Device Model
|{{NotDone}}
|{{NotDone}}
|{{NotDone}}
|{{NotDone}} <sup>[ [[#Foot2|2]] ]</sup>
|-
|-
!colspan="3"|<big>&nbsp;</big>
!colspan="3"|<big>Misc Features</big>
|-
|-
|CPU pools
|CPU pools
|{{Tick}} <sup>[ [[#Foot5|5]] ]</sup>
|???
|{{Tick}}
|{{Tick}}
|-
|-
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|Control of CPUID features exposed to guests.
|Control of CPUID features exposed to guests.
|{{Tick}}
|{{Tick}}
|{{Tick}} (syntax greatly improved)
|{{Tick}} <sup>(syntax greatly improved)</sup>
|-
|-
!colspan="3"|<big>&nbsp;</big>
!colspan="3"|<big>Features that are explicitly not supported in XL</big>
|-
|-
|Managed Domains
|Managed Domains
|{{Tick}}
|{{Tick}}
|No <sup>[ [[#Foot1|1]] ]</sup>
|{{NotDone}} <sup>[ [[#Foot1|1]] ]</sup>
|-
|-
|Python code in configuration files
|Python code in configuration files
|{{Tick}}
|{{Tick}}
|No <sup>[ [[#Foot1|1]] ]</sup>
|{{NotDone}} <sup>[ [[#Foot1|1]] ]</sup>
|}
|}


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<span id="Foot1"><sup>[ 1 ]</sup> Feature is explicitly not supported by xl, see [[XL#Anti-Features|XL Anti-Features]] </span><br/>
<span id="Foot1"><sup>[ 1 ]</sup> Feature is explicitly not supported by xl, see [[XL#Anti-Features|XL Anti-Features]] </span><br/>
<span id="Foot2"><sup>[ 2 ]</sup> Feature will be exposed in a future release </span><br/>
<span id="Foot3"><sup>[ 3 ]</sup> Feature development has started in the Xen 4.5 release cycle, but did not get completed </span><br/>
<span id="Foot4"><sup>[ 4 ]</sup> See [[Remus Toolkit Differences]] </span><br/>
<span id="Foot5"><sup>[ 5 ]</sup> Undocumented in [[XEND]] man pages </span><br/>
<span id="Foot6"><sup>[ 6 ]</sup> Includes SDL & VNC support</span><br/>
<span id="Foot7"><sup>[ 7 ]</sup> Includes SPICE support </span><br/>

'''Also See''':
* [[XL]]
* [[XEND]]
* [[Choice of Toolstacks]]
* Short video overview: [https://www.youtube.com/watch?v=qdJi18VekEY&feature=youtu.be XM to XL: A Short, But Necessary, Journey]
* [[Remus Toolkit Differences ]]



[[Category:Xen]] [[Category:Users]]
[[Category:Xen]] [[Category:Xen 4.2]] [[Category:Users]]
[[Category:Xen 4.3]]
[[Category:Xen 4.4]]
[[Category:Xen 4.5]]
[[Category:Compatibility]]

Latest revision as of 16:12, 28 January 2015

The following compares the featureset of the xend toolstack vs the xl toolstack as of Xen 4.4 and 4.5.

xm / xend xl
Guest Types
PV guests ✓ ✓
HVM guests ✓ ✓
PVHVM guests ✓ ✓
PVH guests ✗ ✓
Guest lifecycle operations
Create, shutdown, reboot ✓ ✓
Pause, unpause ✓ ✓
List, rename ✓ ✓
Live migration and save/restore ✓ ✓
Remus Integration ✗ [ 4 ] ✓
Guest device support
Network devices (both para-virtualised and emulated) ✓ ✓
Block devices (both para-virtualised and emulated) ✓ ✓
Sharing storage across DomU's via w! in virtual machines configuration files in disk settings ✓ ✗ [ 1 ]
Virtual framebuffer, keyboard and mouse (both para-virtualised and emulated) ✓ [ 6 ] ✓ [ 6 ][ 7 ]
SPICE framebuffer/console support ✗ ✓
QXL graphics device support for SPICE ✗ ✗ [ 2 ]
PV console devices ✗ ✓
PCI device passthrough ✓ ✓
VGA graphics device (GPU) passthrough ✓ ✓
SCSI LUN/Host passthrough (PVSCSI) ✓ ✗ [ 2 ]
Qemu USB device passthrough via config file (using qemu xen traditional) ✓ ✓
Qemu USB device passthrough via config file (using qemu upstream) ✗ ✓
Qemu USB device passthrough via hotplug (using qemu xen traditional) ✓ ✗ [ 3 ]
Qemu USB device passthrough via hotplug (using qemu upstream) ✗ ✗ [ 3 ]
Qemu USB device passthrough support for USB 1.1 ✓ ✓
Qemu USB device passthrough support for USB 2.0 (qemu upstream) ✗ ✓
Qemu USB device passthrough support for USB 3.0 (qemu upstream) ✗ ✓
PVUSB USB 2.0 device passthrough for both PV and HVM guests ✓ ✗ [ 3 ]
Device Model Support
Qemu Xen Traditional Device Model ✓ ✓
Upstream Qemu Device Model ✗ ✓
Stub domain Qemu Xen Traditional Device Model ✓ ✓
Stub domain Upstream Qemu Device Model ✗ ✗ [ 2 ]
Misc Features
CPU pools ✓ [ 5 ] ✓
Cpupool-per-NUMA node. ✗ ✓
Control of CPU scheduler parameters ✓ ✓
TMEM ✓ ✓
XSM/Flash policy control ✓ ✓
Control of CPUID features exposed to guests. ✓ ✓ (syntax greatly improved)
Features that are explicitly not supported in XL
Managed Domains ✓ ✗ [ 1 ]
Python code in configuration files ✓ ✗ [ 1 ]

[ 1 ] Feature is explicitly not supported by xl, see XL Anti-Features
[ 2 ] Feature will be exposed in a future release
[ 3 ] Feature development has started in the Xen 4.5 release cycle, but did not get completed
[ 4 ] See Remus Toolkit Differences
[ 5 ] Undocumented in XEND man pages
[ 6 ] Includes SDL & VNC support
[ 7 ] Includes SPICE support

Also See:

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