Re: [pcp] PCP Network Latency PMDA

["Frank Ch. Eigler" <fche@xxxxxxxxxx>]

Hi -

> > I don't think anyone was suggesting an all-or-none sort of collection
> > behavior.  I only said on-demand, referring to the metrics actually
> > requested by a client (suffering PM_ERR_VALUE or PM_ERR_AGAIN or
> > PM_ERR_PMDANOTREADY or whatever for that first pmFetch).
> 
> Its common for someone to run something like "pminfo -f network" to get
> a high level look, then browse through the result, maybe iterating on
> further with pminfo to something more specific, or switching to pmchart
> or another tool for a different view.

I think it's reasonable for such one-shot clients to suffer from the
indignity of a PM_ERR_PMDANOTREADY for such metrics.  (That's not too
surprising, considering that the semantics would probably be COUNTER,
which are meaningless in isolation.)

- FChE