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Re: [Xen-API] Fwd: Getting VM stats
- To: "Daniel P. Berrange" <berrange@xxxxxxxxxx>
- From: jdsw <jdsw2002@xxxxxxxxx>
- Date: Tue, 19 Dec 2006 11:08:42 -0800 (PST)
- Cc: xen-api@xxxxxxxxxxxxxxxxxxx
- Delivery-date: Tue, 19 Dec 2006 11:08:32 -0800
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- List-id: Discussion of API issues surrounding Xen <xen-api.lists.xensource.com>
I understand that mechanism for collecting data might be different and specific. But the transport and API to get that information can be standardised. For example, a way to push some structured data on xenbus and make it accessible through Xend api.
Also, I am not sure, if the email that I fwd got other questions about, how to get certain basic metrics through Xend instead of using combination of Xend API, Memory Maps, parsing files for VBD and n/w information.
/Jd
"Daniel P. Berrange" <berrange@xxxxxxxxxx> wrote: On Tue, Dec 19, 2006 at 09:54:10AM -0800, jdsw wrote:
> Do you guys have any suggestion ?
> (I did not get satisfactory answers to each of the questions on dev forum)
>
> In addition is there a plan for a streamlined access to things happening
> in Domu information
through Dom0. For example: Top process information in a
> DomU available through Dom0 ?
The Xen-API work is really about management of Dom0 and DomU VMs as opaque
entities viewed from Dom0. Collecting OS specific details about work going on
inside the DomU (eg processes running, detailed breakdown of CPU & memory
usage) is best handled by a dedicated monitoring API. It has very different
requirements of that of Xen-API, in particular from a performance / overhead
POV. There are a wide variety of existing OS monitoring tools which can be
deployed inside DomUs, Big-Sister, Nagios, Ganglia, to name but three such
tools.
Regards,
Dan.
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