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] xen 4.1 missing memory

To: "Fajar A. Nugraha" <list@xxxxxxxxx>
Subject: Re: [Xen-users] xen 4.1 missing memory
From: "Ian Tobin" <itobin@xxxxxxxxxxxxx>
Date: Thu, 18 Aug 2011 07:02:36 +0100
Cc: Xen User-List <xen-users@xxxxxxxxxxxxxxxxxxx>
Delivery-date: Wed, 17 Aug 2011 23:04:38 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <CAG1y0scXzxhu6-LPvMNi4qYVDaVuS7bp8-T41kJgQoTw_uMjmw@xxxxxxxxxxxxxx>
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/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=unsubscribe>
References: <039E0B4AA9103344A80DA55DDDC76A933B308C@xxxxxxxxxxxxxxxxxxxxxx> <CAG1y0scXzxhu6-LPvMNi4qYVDaVuS7bp8-T41kJgQoTw_uMjmw@xxxxxxxxxxxxxx>
Sender: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
Thread-index: AcxdbHGFVu7QZZ6jSZ20jEAbrPel+w==
Thread-topic: [Xen-users] xen 4.1 missing memory
Hey,

I set the dom0 min men to 512m in xend-config.sxp and ballooning is already 
enabled.  I rebooted and it initially shows 512m but one the vms are booted it 
drops to 256 .

Any other thoughts?

Thanks

 




 


On 17 Aug 2011, at 10:44, "Fajar A. Nugraha" <list@xxxxxxxxx> wrote:

> On Wed, Aug 17, 2011 at 2:35 PM, Ian Tobin <itobin@xxxxxxxxxxxxx> wrote:
>> Hi,
>> 
>> 
>> 
>> We have the dom0_mem=512M parameter set on boot which does show up after
>> booting however ive noticed that it drops to roughly 256M on one of the
>> boxes after the VMs are all started which is causing slow downs as it needs
>> to swap.
> 
> IIRC that is expected behaviour, no matter what version the kernel is.
> 
>> The kernel is 2.6.32.43, has anyone else seen this?
> 
> dom0_mem only sets dom0's initial memory. If domU needs more memory,
> dom0 can still baloon down. See dom0-min-mem and
> enable-dom0-ballooning on /etc/xen/xend-config.sxp to change this
> behavior.
> 
> -- 
> Fajar
> 
> _______________________________________________
> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users
> 


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