Re: Archive pmLookupDesc errors (global derived metrics induced)

[Nathan Scott <nathans@xxxxxxxxxx>]

----- Original Message -----
> On 04/20/2016 01:26 PM, Nathan Scott wrote:
> hmm, the root cause seems to be that derived metrics are always defined
> in the namespace, even if their operand metrics are not present in the
> archive, as below. It looks like event.flags and event.missed sort of
> similarly exhibit this issue too - they're both globally derived metrics
> defined by a call to __pmRegisterAnon() from __dminit() in libpcp.

Yep, but they're "safe" in that they are always valid.

> The global derived metrics should be omitted from the pmns somehow I guess,
> or maybe only defined if all their operands are present?

Yeah - the latter sounds better to me, if its possible - implementing it may
prove tricky.

cheers.

--
Nathan