Re: [pcp] PCP libvirt PMDA

[Nathan Scott <nathans@xxxxxxxxxx>]

Hi Martins,

----- Original Message -----
> Nathan/Marko,
> 
> On July 24, 2016 at 9:03:16 PM, Nathan Scott (nathans@xxxxxxxxxx) wrote:
> > Hi Marko,
> 
> > It tends to be block devices and network interfaces that are problematic,
> > not CPUs FWIW - these are added and removed more commonly.
> 
> We havenât started logging any nodes with this pmda, just starting to figure
> out what is useful, but whatever the final choice is, it would be ideal if
> pmlogger would automatically pickup any new devices. ÂSo if the pmlogger

Yes, this isn't going to work in the current code - we'll need to fix this.

> >  
> > > Martins, you were already trying out this libvirt PMDA after its
> > > initial posting and you have lots of valuable experience and insight
> > > with PCP also in general, how do you see these two approaches, which
> > > one would be more suitable for you and your use cases?
> >  
> > FWIW, it was primarily from problems that Martins and Joe observed that
> > we ended up switching the cgroup metrics over to this compound instance
> > name approach.
> >  
> 
> Yeah it was something to do with IDs being reused by different cgroups or
> something like that if I recall correclty. We had a lot of cgroups coming
> and going.
> 

thanks.

--
Nathan