[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Xen-users] who comes from kvm?


  • To: xen-users@xxxxxxxxxxxxxxxxxxx
  • From: Mauro <mrsanna1@xxxxxxxxx>
  • Date: Sat, 12 Feb 2011 22:55:17 +0000
  • Delivery-date: Sat, 12 Feb 2011 14:56:35 -0800
  • Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type:content-transfer-encoding; b=cWe6CqytZFxCGy87VOV1rVQWwA1S4+URSaayeSdec4uszYMZhXfyeY8ndub5ZW78cI PZS2C+kX7C17zp8AiUqRjVXExklNteb6cC/aM8IlCl8kprF4HDB/9n4qG3i5RHPhSUsd b58XRfe2msiceGE49sgu1gzsUucmliDG/kdxU=
  • List-id: Xen user discussion <xen-users.lists.xensource.com>

On 12 February 2011 22:45, Bhasker C V <bhasker@xxxxxxxxxxxxx> wrote:
>
> On Fri, 11 Feb 2011, Javier Guerra Giraldez wrote:
>
>> On Fri, Feb 11, 2011 at 12:24 PM, Steve Sapovits <steves06@xxxxxxxxxxx>
>> wrote:
>>>
>>> (Xen is a type 1, KVM is a type 2)
>>
>> that's not exact since KVM doesn't run 'on top of' the Linux kernel;
>> it's part of the Linux kernel. Âas such, it has the same 'bare metal'
>> access to hardware as the rest of the kernel or the Xen hypervisor.
>>
>> IMHO, the main difference is that Xen has its own scheduler and
>> arbitration logic, while KVM reuses existing Linux code. Âpro: it can
>> be tuned to the specific case of handling VMs. Âcon: a little
>> duplication of code
>
> I second this. I have used KVM extensively and find it is very stable and
> useful in case we are running a dissimlar OS (like windows and SunOS). KVM
> is really good in a lot of respects (for eg:- in case of USB if you want
> to send a raw USB device to the guest machine). I have found KVM very
> stable. As Javier told, KVM is _not_ running on top of kernel. It is a
> totaly different sub-system and gives near-baremetal performance if properly
> configured with virtio drivers.
>
> Almost everything which can be done on Xen can be done on KVM (but IMO
> vice-versa is not totally true).

Do you use xen or kvm on your productions servers?

_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users


 


Rackspace

Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.