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Re: [pcp] pcp grafana and graphite - How to convert pcp metric values in

To: Ken McDonell <kenj@xxxxxxxxxxxxxxxx>
Subject: Re: [pcp] pcp grafana and graphite - How to convert pcp metric values into percent
From: "Frank Ch. Eigler" <fche@xxxxxxxxxx>
Date: Wed, 2 Jul 2014 16:39:04 -0400
Cc: Amer Ather <aather@xxxxxxxxxxx>, Martin Spier <mspier@xxxxxxxxxxx>, pcp@xxxxxxxxxxx
Delivered-to: pcp@xxxxxxxxxxx
In-reply-to: <53B46CB4.40409@xxxxxxxxxxxxxxxx>
References: <y0mha353ky5.fsf@xxxxxxxx> <y0m8uoh3kf4.fsf@xxxxxxxx> <002d01cf9284$dc8fe570$95afb050$@internode.on.net> <002f01cf9285$f0c63160$d2529420$@internode.on.net> <CAM1aq-HgP5+Tsq_sCLWH6GrLOn8UXQWaEVkVaC1p=TT_kMn6Tg@xxxxxxxxxxxxxx> <20140629220735.GA13993@xxxxxxxxxx> <CAM1aq-Hr2ss+b82p1EMCRTjK_Vsbnde_tKVv53MQfP25p4e-aw@xxxxxxxxxxxxxx> <y0m1tu41lld.fsf@xxxxxxxx> <CAM1aq-EGP8=DGUva+JSk3WMeLRisi0Weg3spN1+SLghgrOKVtQ@xxxxxxxxxxxxxx> <53B46CB4.40409@xxxxxxxxxxxxxxxx>
User-agent: Mutt/1.4.2.2i
Hi, Ken -

> [...]  so the 20th anniversary of "starting" PCP has been and gone.
> [...]

Congrats!

> ... so, over 20 years ago, we made a very early decision to NOT hold
> client state in the collection (server) side of the PMAPI.  [...]  I
> still believe this is semantically the correct thing to do ...
> clients, not pmcd, know what to do with a time series of metric
> observations. [...]

Indeed so.  A new issue under contention is whether the client side of
PMAPI - libpcp - could/should have rate-conversion capabilities, so
each client programs wouldn't have to reinvent that wheel.

- FChE

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