Re: [Xen-users] Finding free memory

[Todd Deshane <deshantm@xxxxxxxxx>]

On Tue, Dec 21, 2010 at 1:21 PM, Rushikesh <rushikesh.jadhav@xxxxxxxxxx> wrote:
> Hi list,
>
> This is probably my first email to the list :)
>
> I'm using XCP 0.5 as of now and I'm very happy with its performance and
> features.
>
> I'm trying to identify two realtime parameters of a running VM using
>
> # xe vm-data-source-query  data-source=memory_internal_free vm=vm1
>
> # xe vm-data-source-query  data-source=memory vm=vm1
>
> On a stable VM (the VM whose target memory is not changing rapidly) these
> commands are giving correct output but if I set a VM's target memory and try
> to check its internal free memory Im getting old value... and after a minute
> If I fire the same command to check internal free memory it gives me an
> updated value which is correct.
>
> I want to fetch the realtime data with "# xe vm-data-source-query
>  data-source=memory_internal_free vm=vm1"   but  cant get.. the output is
> always a minute old
>
> could someone please shed some light on this.?? or am I missing anything ??
>  or is there any way by which I can force xe command to update its database
> ?

Determining free memory is tricky. Make sure that you have the
XenServer tools installed.

Are you familiar with this wiki page:
http://wiki.xensource.com/xenwiki/Dynamic_Memory_Control

Let us know if that helps.

Thanks,
Todd

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