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Re: pcp updates: dynamic metrics, pmdapapi, containers, qa

To: "Frank Ch. Eigler" <fche@xxxxxxxxxx>
Subject: Re: pcp updates: dynamic metrics, pmdapapi, containers, qa
From: Nathan Scott <nathans@xxxxxxxxxx>
Date: Mon, 15 Dec 2014 01:34:27 -0500 (EST)
Cc: pcp <pcp@xxxxxxxxxxx>
Delivered-to: pcp@xxxxxxxxxxx
In-reply-to: <y0mlhmejmcc.fsf@xxxxxxxx>
References: <494364595.14790394.1418280789809.JavaMail.zimbra@xxxxxxxxxx> <1300433870.14907994.1418289576168.JavaMail.zimbra@xxxxxxxxxx> <y0mlhmejmcc.fsf@xxxxxxxx>
Reply-to: Nathan Scott <nathans@xxxxxxxxxx>
Thread-index: Uca3SI74je7PNSt5xAzvgeTHSqFoww==
Thread-topic: pcp updates: dynamic metrics, pmdapapi, containers, qa

----- Original Message -----
> > [...]
> > Nathan Scott (1):
> >       libpcp/pmcd: protocol-level support for containers
> > [...]
> 
> Can you explain further your intended design for this, so we can get a
> chance to review before it gets cast in stone?
> 

We're discussing here the implementation of:
http://www.pcp.io/pipermail/pcp/2014-June/005030.html
... for which the above was the first, preparatory commit of several
pending commits.

The above mail was sent ~6 months ago.  The code is very far advanced
now (it is very close to the design above; there should be no surprises
here), and I expect the rest to arrive this week.  It's not going to be
conducive to design-by-committee at this stage, I'm afraid (if ever it
was - plenty of experimental, exploratory work there).  But there will
be several weeks between merge/release for wider review, testing and
sharing of thoughts/ideas/improvements.

Even post-merge/release, "cast in stone" is not really a concrete thing
(more a stone thing I suppose) - if need be, more revs can follow, even
protocol revs.  But I'm liking the look of the implementation so far (&
its now close to complete) so hopefully not much followup work is going
to be needed and we can instead move on to building on top of the shiny
new awesomeness.

The answers to your other more specific questions will become clear as
the code arrives.  I'm not going to delve into answering them all now,
as that'd simply prevent me completing it quickly and would hinder any
discussion more than help.

Patience now, go and enjoy your vacation time.  It will arrive before
the weeks end for others to kick the tires & hopefully get some real-
world experience before release time.

cheers.

--
Nathan

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