Hi,
We are using both and I can't say one is faster than other. It
all depends. I believe that KVM can even beat XEN if you are using
"pass-through" mode. You may Google around to see different tests that have
being already done. There are a lot.
1. KVM is "fully virtualized" while XEN is "paravirutalized". If you
install PV drivers on guest it will probably be faster than KVM.
2. XenServer has very nice XAPI toolstack where you can do almost
everything using “xe … “ command. XenServer also has XenCenter graphical UI
(like VmWare vCenter).
3. iSCSI is supported at XenServer. KVM allows using RBD storages
(Ceph), while XenServer – is not. It is scheduled for the next release.
If you want to be safe you must consider using several hypervisors anyway. You
probably don’t want that bug at one hypervisor will hit entire cloud if this is
one you are using. I don’t think performance should be at 1st priority while
choosing hypervisor type.
BR,
Vadim.
-----Original Message-----
From: Vladimir Melnik [mailto:[email protected]]
Sent: Wednesday, October 29, 2014 12:44 PM
To: [email protected]
Subject: XenServer
Dear colleagues,
We're using KVM as a hypervisor in our cloud, but now I'm considering to create
one more cluster based on XenServer, because I've heard it has much better
performance than KVM. So, I'd like to ask a couple of questions and your
answers will be really appreciated.
1. Does XenServer really shows better performance than KVM?
2. Are there other benefits that XenServer provides comparing to KVM?
3. I'm using shared mountpoint to GFS2 (accessible by iSCSI) as a storage, what
is better to use with XenServer?
Thank you so much.
V.
