RE: [Xen-users] What does Maxmem do?

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

> -----Original Message-----
> From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx 
> [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of 
> Fabian Holler
> Sent: 24 August 2006 12:20
> To: xen-users@xxxxxxxxxxxxxxxxxxx
> Subject: [Xen-users] What does Maxmem do?
> 
> Howdy,
> 
> 
> I've read on
> http://revu.tauware.de/revu1-incoming/xen-0604251805/xen-3.0.2
/docs/misc/xen_config.html
> about the maxmem option? What it do?
> I don't see any result... I 've thought that the memory will
> automatically scaled to maxmem... but xm top show only 128 mb reserver
> for the guest machine also during high loads.

Maxmem tells how much "space to reserve" for future growing of the
guest, so that you can use the ballon driver to expand the memory at a
later stage. If you don't supply a maxmem, it's possible that you can't
grow the memory later one, since the page-table (for example) can't be
expanded later on. 

You can find some more info by searching for Xen Maxmem, although you
may have to read a few different posts to get it clear... 

--
Mats
> 
> greetings
> 
> Fabian
> 
> 



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