Re: [Xen-users] swap size on dom0

[Nico Kadel-Garcia <nkadel@xxxxxxxxx>]

Geoff Kirk wrote:
> Nice to know that, my dom0's (dom0_mem=64000) are only PIII's with 512 
> ram i must be just lucky i don't use virt-manager i guess. Works just 
> fantastic on debian-etch. Of course this is at home and not really 
> working very hard.
> Geoff
>
> Nico Kadel-Garcia wrote:
> > 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.
You can use virt-manager for monitoring systems: for doing the libvirt 
based installer, though, whoosh! Lots of RAM, baby!
CentOS 5 and RHEL 5 are serious RAM pigs.

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