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Re: [Xen-users] swap size on dom0

To: Geoff Kirk <geoff.k@xxxxxxxxxxxxxxxxxxx>
Subject: Re: [Xen-users] swap size on dom0
From: Nico Kadel-Garcia <nkadel@xxxxxxxxx>
Date: Mon, 30 Jul 2007 21:31:25 +0100
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Geoff Kirk wrote:
Yes that sound a lot too much. 1st point i would make is to pass dom0_mem=xxxxx where xxxxx is number of kilobytes to assign to dom0 (not including domU's) 128 megabytes should be more than enough (xxxxx=128000). 2nd point as a general rule i find its then good to use same amount of swap space as i have ram in that case would be 128 megabytes. I have heard in the past it used to be suggested 2x ram for swap but that much is not often needed. In general a dom0 should not require so much ram because it doesn't as a rule do anything but serve domU's. 128 megabytes of each should be plenty.
Alas! The RHEL 5 and thus the CentOS 5 Dom0's fail to run virt-install or virt-manager without at lest 500 Meg of RAM available for Dom0.

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