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Re: [pcp] fetchgroups vs pmclient in PCP_PG book

To: "Frank Ch. Eigler" <fche@xxxxxxxxxx>, pcp developers <pcp@xxxxxxxxxxx>
Subject: Re: [pcp] fetchgroups vs pmclient in PCP_PG book
From: Mark Goodwin <goodwinos@xxxxxxxxx>
Date: Thu, 17 Dec 2015 14:04:55 +1000
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On 12/17/2015 01:29 PM, Frank Ch. Eigler wrote:
Hi -

I added a draft of fetchgroup C+python documentation to the
programming guide, as mgoodwin requested.  Usual repo & branch.

I'd like some Official Advice as to what to do about pmclient.  The
code has been converted to fetchgroups, so is much younger and better
looking, but the programming book waxes eloquently about the older
one.  What would you recommend?

AIUI, pmclient was originally written as an example / template
on using the PMAPI to write a simple perf tool. So I reckon
it'd be best to keep the original legacy PMAPI version and also
document the fetchgroup'erised version too. Both are useful
examples and handy templates. A python version using pmfg
would be good too. My 2c :)

(a) drop mention of pmclient in the manual?

(b) restore the previous version of pmclient in the source tree?

(c) replace the verbiage in the manual about pmnsmap etc.  with the
     simpler pmfg stuff?  (This seems counter to the point of the
     pmclient writeup, which sets out to make a "manageable solution"
     out of old PMAPI.  If pmfg already does that, then pmclient's
     relatively simple use of pmfg does not need belabouring.)


- FChE

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