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/
Home Products Support Community News


Re: [Xen-devel] [PATCH] Make "xm mem-set" be lower bound on domX-min-mem

To: Gareth S Bestor <bestor@xxxxxxxxxx>
Subject: Re: [Xen-devel] [PATCH] Make "xm mem-set" be lower bound on domX-min-mem
From: Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
Date: Sun, 21 May 2006 09:45:31 +0100
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
Delivery-date: Sun, 21 May 2006 01:50:36 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxx
In-reply-to: <OFD37F0E3D.8E8DD3FC-ON88257174.007480CF-88257174.00757FCC@xxxxxxxxxx>
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/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
References: <OFD37F0E3D.8E8DD3FC-ON88257174.007480CF-88257174.00757FCC@xxxxxxxxxx>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx

On 20 May 2006, at 22:27, Gareth S Bestor wrote:

An absolute limit might be easier to handle - and expose to users - than a relative one, especially up-front in CIM where it exposes min/max limits on resource allocations. Or is it really <2% of whatever the original memory allocation is when things go to kabluwey... ?

Unfortunately so: some critical kernel data structures are sized proportional to the maximum amount of memory that may be allocated to the guest. These data structures do not shrink as you remove memory from the guest.

 -- Keir

Xen-devel mailing list