WARNING - OLD ARCHIVES

This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-users

RE: [Xen-users] a new server for Xen

To: "Petersson, Mats" <Mats.Petersson@xxxxxxx>
Subject: RE: [Xen-users] a new server for Xen
From: "Ryan Burke" <burke@xxxxxxxxxxxxxxxxx>
Date: Thu, 1 Mar 2007 08:25:44 -0600 (CST)
Cc: burke@xxxxxxxxxxxxxxxxx, Jan Albrecht <jan.albrecht@xxxxxxxxx>, xin <xcheney@xxxxxxxxxxxxxx>, xen-users@xxxxxxxxxxxxxxxxxxx
Delivery-date: Thu, 01 Mar 2007 06:24:59 -0800
Envelope-to: www-data@xxxxxxxxxxxxxxxxxx
Importance: Normal
In-reply-to: <907625E08839C4409CE5768403633E0B018E19FB@xxxxxxxxxxxxxxxxx>
List-help: <mailto:xen-users-request@lists.xensource.com?subject=help>
List-id: Xen user discussion <xen-users.lists.xensource.com>
List-post: <mailto:xen-users@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=unsubscribe>
References: <907625E08839C4409CE5768403633E0B018E19FB@xxxxxxxxxxxxxxxxx>
Reply-to: burke@xxxxxxxxxxxxxxxxx
Sender: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
User-agent: SquirrelMail/1.4.8
>> -----Original Message-----
>> From: Ryan Burke [mailto:burke@xxxxxxxxxxxxxxxxx]
>> Sent: 01 March 2007 14:14
>> To: Petersson, Mats
>> Cc: Jan Albrecht; xin; xen-users@xxxxxxxxxxxxxxxxxxx
>> Subject: RE: [Xen-users] a new server for Xen
>>
>> >
>> >
>> >> -----Original Message-----
>> >> From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
>> >> [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of
>> >> Jan Albrecht
>> >> Sent: 01 March 2007 05:16
>> >> To: xin
>> >> Cc: xen-users@xxxxxxxxxxxxxxxxxxx
>> >> Subject: Re: [Xen-users] a new server for Xen
>> >>
>> >> xin wrote:
>> >> > Thanks for that. What about a VT-supported cpu to do the
>> >> para-virtualization
>> >> > instead of full-virtualization? which one is better.
>> >> I've AMD PV and Intel VT here and from my point of view the
>> >> VT are much
>> >> better (and that's no matter if they're AMD, Intel or from
>> Mars...),
>> >> because you can install an OS "out-of-box" to that server.
>> >> With PV you're limited to Linux and to special kernels.  And the
>> >> arguments Mats brought up may be right, but as long as you
>> do normal
>> >> daily business on such a server (file-server, webserver,
>> etc...) at VT
>> >> machine would always be the better choice.
>> >
>> > Sure, with VT (in my view obviously preferrably from AMD
>> ;-) ) you have
>> > ALL the possibilites, rather than just half of them. I
>> should have said
>> > so in my post.
>> >
>> > --
>> > Mats
>>
>>
>> I guess now I'm confused. I thought that AMD PV and Intel VT
>> did basically
>> the same thing. They allowed unmodified OS's to work with a
>> hypervisor to
>> support full vitrualization. From that Jan said it sounds
>> like there is a
>> draw back of PV vs VT? I haven't heard anything about that.
>> Can someone
>> explain (I personally prefer AMD)??
>
> PV = Para-Virtualization -> modified kernel source-code to make virtual
> kernel.
> VT = Virtualization Technology (from either AMD or Intel) allowing
> UNMODIFIED OS kernels to run on Xen. AMD's technology is sometimes
> called SVM or AMD-V, and the combined name for "VT" in Xen is "HVM",
> which is short for "Hardware Virtual Machine (extensions)".
>
> If you look at my e-mail address, you see why I prefer AMD ;-)
>
> --
> Mats
>>
>> Thanks,
>> Ryan
>>
>>

Sorry, brain fart. I saw AMD PV and was thinking AMD-V. Thanks.

Ryan


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

<Prev in Thread] Current Thread [Next in Thread>