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Date:      Wed, 18 Jan 2012 12:27:10 -0800
From:      Doug Barton <dougb@FreeBSD.org>
To:        John Kozubik <john@kozubik.com>
Cc:        freebsd-hackers@freebsd.org
Subject:   Re: FreeBSD has serious problems with focus, longevity, and lifecycle
Message-ID:  <4F172B1E.30401@FreeBSD.org>
In-Reply-To: <alpine.BSF.2.00.1201181141270.19710@kozubik.com>
References:  <alpine.BSF.2.00.1112211415580.19710@kozubik.com> <1326756727.23485.10.camel@Arawn> <4F14BAA7.9070707@freebsd.org> <alpine.BSF.2.00.1201181034580.51158@fledge.watson.org> <4F16A5B8.2080903@FreeBSD.org> <Pine.GSO.4.64.1201181147450.6287@sea.ntplx.net> <4F1707E6.4020905@FreeBSD.org> <CADWvR2ip=nADz=BLXW%2BuNkyUP4hUf88UkOhSoz%2B0AcY79Hzdag@mail.gmail.com> <alpine.BSF.2.00.1201181141270.19710@kozubik.com>

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On 01/18/2012 11:46, John Kozubik wrote:
> - mark 9 as the _only_ production release

While I understand your motivation, I am not sure this is a workable
goal when combined with the goal that others have expressed of longer
timelines for the support of a given branch. Speaking from personal
experience, once a service is released on a given platform the costs of
migration can be significant. And if what I have is working well and
only needs the occasional bug/security fix my motivations for migration
are near zero. So the tradeoffs then become more frequent major releases
to get new features, vs. longer support for a given release branch.

Let's take 5 years as a reasonable time period for supporting a branch.
Waiting that long between major releases would significantly stifle the
ability to add new features that require breaks to the [AK][BP]I. It
would also inhibit our ability to do revolutionary architectural changes
such as moving to clang as the primary supported compiler.

What I've proposed instead is a new major release every 2 1/2 years,
where the new release coincides with the EOL of the oldest production
release. That way we have a 5-year cycle of support for each major
branch, and no more than 2 production branches extant at one time.

History tells us that 2 production branches is a goal we can achieve,
with the focus shifting more heavily towards only bug/security fixes in
the oldest branch after the new production release branch is cut. If we
combine that with the ideas that are being put forward about teams that
"own" a production branch, and a more frequent stripped-down release
process, I think this is a very workable model.


Doug

-- 

	It's always a long day; 86400 doesn't fit into a short.

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