xen-devel

[Top] [All Lists]

Re: [Xen-devel] HVM and free_memory query

from [Apoorva Kulkarni]

[Permanent Link][Original]

To:	Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
Subject:	Re: [Xen-devel] HVM and free_memory query
From:	Apoorva Kulkarni <apoorva@xxxxxxxxx>
Date:	Fri, 10 Jul 2009 11:48:01 -0700
Cc:	"xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>
Delivery-date:	Fri, 10 Jul 2009 11:49:01 -0700
Envelope-to:	www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to:	<C67D49ED.F538%keir.fraser@xxxxxxxxxxxxx>
List-help:	<mailto:xen-devel-request@lists.xensource.com?subject=help>
List-id:	Xen developer discussion <xen-devel.lists.xensource.com>
List-post:	<mailto:xen-devel@lists.xensource.com>
List-subscribe:	<http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe:	<http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
References:	<C67D49ED.F538%keir.fraser@xxxxxxxxxxxxx>
Sender:	xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
User-agent:	Thunderbird 2.0.0.22 (Windows/20090605)

Keir Fraser wrote:

On 10/07/2009 19:33, "Apoorva Kulkarni" <apoorva@xxxxxxxxx> wrote:

Thank you for your quick response. That helps a lot.

In our case we need to know precisely how much overhead memory is
required by xen per domain. So is it okay for us to assume that it will
always be under 0.8% or could there be exceptions to this (e.g.
different fractions for a Solaris 10 HVM vs Windows HVM) ?


Precisely, the overhead is determined by xend as: 8kB per 1MB of guest
memory, plus 1MB per guest virtual cpu.

See xen/xend/image.py:X86_HVM_ImageHandler:getRequiredShadowMemory()

 -- Keir


Exactly what we were looking for. Thanks a ton.

--
Apoorva Kulkarni
3Tera, Inc.

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

[More with this subject...]

<Prev in Thread]	Current Thread	[Next in Thread>
[Xen-devel] HVM and free_memory query, Apoorva Kulkarni Re: [Xen-devel] HVM and free_memory query, Keir Fraser Re: [Xen-devel] HVM and free_memory query, Apoorva Kulkarni Re: [Xen-devel] HVM and free_memory query, Keir Fraser Re: [Xen-devel] HVM and free_memory query, Apoorva Kulkarni <=

Previous by Date:	Re: [Xen-devel] HVM and free_memory query, Keir Fraser
Next by Date:	[Xen-devel] [PATCH][VTD] fix assertion fault in pci passthrough code, Kay, Allen M
Previous by Thread:	Re: [Xen-devel] HVM and free_memory query, Keir Fraser
Next by Thread:	[Xen-devel] [PATCH] i386: fix boot, Jan Beulich
Indexes:	[Date] [Thread] [Top] [All Lists]