RE: [Xen-users] Q: swap and where?

["Petersson, Mats" <Mats.Petersson@xxxxxxx>]

> -----Original Message-----
> From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx 
> [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of 
> Ulrich Windl
> Sent: 17 October 2006 14:47
> To: Christoph Purrucker
> Cc: xen-users@xxxxxxxxxxxxxxxxxxx
> Subject: Re: [Xen-users] Q: swap and where?
> 
> On 17 Oct 2006 at 11:26, Christoph Purrucker wrote:
> 
> > The Xen answer: Hard drive space is cheap in these days.
> > 
> 
> If an OS installation needs about 4GB for filesystem, and the 
> application demands 
> 20GB of swap (because of some lousy memory management), 
> you'll need around 24GB of 
> disk space per DomU. As the server only has a 73GB disk (2.5" 
> in a 1U rack 
> server), space is limited.

But you'll need 20GB of space (per guest) somewhere whichever way you do
it - unless of course you have some special knowledge about the problem
that explains that this will only happen predictably and sometimes so
you can decide beforehand that you only need (say) a total of 40GB to
hold 4 guests, because only two at a time will need 20GB... If that's
the case, perhaps Xen is a bad choice. But if you don't know when and
how much memory each guest will need, you'll still need the space per
guest, no matter what technology is used to give the virtual
memory-space to the guest... 

--
Mats
> 
> Nevertheless: Saving is always better than wasting.
> 
> Regards,
> Ulrich
> 
> 
> _______________________________________________
> 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