Re: Multi-Volume Archive + Live Data Playback for PCP Client Tools

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

Hi, Ken -

> [...]  I was not advocating a fixed mapping [...]

Aha.

> The pmdaCache* routines would allow a dense allocation of more than 4 
> million unique ids and maintain a persistent mapping from the PMNS name 
> that the PMDA chooses and those unique ids.

OK, that could work.

> Perhaps someone could send me the output from:
>       $ pminfo -dm papi
> from a machine where the papi PMDA is running and collecting real data.

(Sent under separate cover.)

> Then restart the PMDA, start a different collection profile and repeat 
> the command above.

It won't change just based on that.  But a different version of
PAPI/libpfm, a CPU/kernel change, can easily generate a different
enumeration of available events, thus a different and/or reordered
PMNS name sets.

- FChE