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Re: [Xen-users] Xen PV Memory counting issues

To: "'jacek burghardt'" <jaceksburghardt@xxxxxxxxx>

From: "Inception Hosting" <inbox@xxxxxxxxxxxxxxxxxxxx>

Date: Mon, 27 Feb 2012 14:16:12 -0000

Delivery-date: Mon, 27 Feb 2012 14:17:12 +0000

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Ballooning is not enabled.

From: jacek burghardt [mailto:jaceksburghardt@xxxxxxxxx]
Sent: 27 February 2012 14:00
To: Inception Hosting
Cc: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-users] Xen PV Memory counting issues

i have same issue on xen unstable and xl i am missing 2gb memory.
xen 4.1.2 and xm work fine .
do you have ballooning enabled

On Feb 27, 2012 5:46 AM, "Inception Hosting" <inbox@xxxxxxxxxxxxxxxxxxxx> wrote:

I Folks,

Wonder if anyone has any ideas on this one?

I have a server with 16GB RAM

1.5GB reserved for Dom0

If I run xm or xl list I get exactly 14GB of DomU’s

Xm or xl info shows 281 MB Free

total_memory : 16374

free_memory : 281

Which means XEN thinks I have used 14.22 GB for DomU’s

CentOS 5.7 64bit

Xen 4.1.2

(SolusVM On Top)

Is this some XEN thing that is not well documented, e.g. to create a 1024 MB RAM DomU XEN actually requires an additional 3 MB overhead or something like that?

Thanks, and any suggestions no matter how small or based in theory only are welcome.

Anthony.

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