Re: [Xen-users] How can we increase de maximum memory for a domU

[Rachid Abdoun <rachid.abdoun@xxxxxxxxxx>]

But when you execute xentop (xen 3.0.2) you can see a column named  
"MAXMEM" and this value is greate than the value fixed in the conf  
file...
What does mean this option (if there is enough memory and a domU need  
more memory, that's mean the domU can use more memory that the memory  
assigned by the conf file??? ) ?  How can we adjuste it?

Le 18 juin 06 à 22:04, Jonathan Ervine a écrit :

> On Friday 16 June 2006 10:44, Rachid Abdoun wrote:
> > Hi,
> >
> > On a virtual network project, we are using xen. We haven't any
> > information in xen documentation on the parameter MAXMEM. Are the ram
> > of domU static or can it increase dynamicaly? Could someone explain
> > how does it work? Thank you
> You can change the amount of memory in a XEN DomU, however it seems  
> the DomU
> does not recognise any memory assigned to it above the amount  
> specified in
> the DomU config file. However I can reduce it dynamically and  
> increase it
> back up to that maximum value. For example, I can specify 1024MB as  
> the
> initial amount, then reduce the amount of memory to 64MB, then  
> increase back
> 768MB, however I cannot go to 1536MB as that is greater than my  
> starting
> 1024MB.
>
> The command for adjusting domain memory is xm mem-set <domID> <mem>
>
> Particularly for hardware assisted fully virtualised operating systems
> stability seems to improve by reducing Dom0 memory as much as  
> possible.
> Hope this helps,
> Jon
>
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