Re: [pcp] PcP query using monitors.

[Nathan Scott <nathans@xxxxxxxxxx>]

Hi Deepthi,

----- Original Message -----
> Hi all,
> 
> I am relatively a new user exploring PcP.
> My use case being, invoking already supported PcP monitors like
> 'pmval' directly from an application.
> 
> I am aware of API bindings that PcP exposes. These are to connect
> to the daemon pmcd and get the values of counters directly but
> this does not involve any post processing of data. As far as I
> understand post processing is done as part of monitors.
> 
> Are there monitor APIs that can be invoked from an application ?
> 

It sounds like the pmRegisterDerived(3) API might suit here.  Also
see the 'ENVIRONMENT' section of the PCPIntro(1) man page where it
describes the PCP_DERIVED_CONFIG env variable - this may allow you
to use derived metrics in your application without modifications.

cheers.

--
Nathan