Re: [Xen-users] Memory Ballooning / Overcommitting

[Robert Read <rread@xxxxxxxxxxxxx>]

On Jul 17, 2008, at 16:35 , Chris Hane wrote:

> I have a xen server setup that I want to install a lot of vms on if  
> possible.  The vms will have no utilization for the most part; and  
> brief utilization when active.  The server has 2GB of RAM.
> We were running into a problem were the dom0 would not let us add  
> anymore vms because we were out of physical memory.
> I have started to read about memory ballooning and hoping someone  
> could point me in the right direction.  If my understanding is  
> correct, ballooning will increase the vm memory if needed up to a  
> maxmem setting. And can decrease memory if requested by the dom0.
> Is this an automatic process, or do I have to manually issue a  
> command to increase/decrease the domU memory?  The command I know  
> about is:
> > xm mem-set <Domain> <Mem>
There is no automatic process for increasing guest memory, yet. As  
Mark mentioned yesterday there are some patches floating around to do  
this if someone wants to try it out.
cheers,
robert

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