Re: Vanilla Xen total CPU %

[David Kowis <david@xxxxxx>]

On 2020-06-08 10:08, Andy Smith wrote:
> Hi,
>
> > > On Jun 8, 2020, at 12:58 PM, Nick Calvert <nick.calvert@simplyhosting.cloud> 
> > wrote:
> > > What I was trying to do was stream some of the xentop counters
> > > into a time series database  (influxdb) so I could graph this.
> I wanted to do this too, but for Prometheus.
+1

I was going to approach it from a crystal point of view, binding to the 
libxl c library. Again real life, and time got to me. I would love to 
see a high quality Xen Prometheus exporter!
> I wrote a libxl C program that prints out the CPU time used by each
> guest in Prometheus's exposition format¹. That would be just the
> cumulative time in seconds because Prometheus likes things in its
> base units, and you can derive percentages and rates from that.
>
> I just trigger it by cron every 5 minutes and use it as a
> node_exporter textfile collector², but I guess if I wanted it at a
> shorter interval I'd make it into a proper exporter from a
> standalone daemon.
>
> If anyone would find it useful I can publish it, though my C is
> terrible…
I'd find it useful to look at :) Throw it on a git repo somewhere, or 
something :)
-- David