[libvirt-users] Memory statistics for DomU's

[Eric Blake]

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On 03/14/2012 01:41 PM, inge85 at web.de wrote:

>> The virDomainMemoryStats() is probably the
>> key API to be using,

> virDomainMemoryStats() I already focused, but there's not directly the data I 
> need (read and written bytes of RAM).

Patches are welcome if you'd like to extend that API to provide
additional stats, from the hypervisors that actually track those stats.

> 
> I don't understand, why it's so hard to track those data. I read something about 
> "xentrace", a tool to read out some CPU counters, which can be used to 
> approximate RAM accesse by using LLC-miss counter. Is there no easy way to get 
> the data?

I'm not aware of one, but that doesn't mean there isn't one; and it may
be a simple patch to write if you can find the right place in the source.

-- 
Eric Blake   eblake at redhat.com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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