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Re: Kernel version for stretch

Cross-posted to 3 groups.

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On Fri, 2016-02-05 at 18:48 +0000, Niels Thykier wrote:
> Ben Hutchings:
> > On Tue, 2016-02-02 at 07:34 +0000, Niels Thykier wrote:
[...]
> > I thought that 10 week cycles were rare, but I checked this and now I'm
> > much less confident.  Rounding to the nearest week, the distribution of
> > release cycle lengths from 3.2 to 4.4 inclusive, is:
> > 
> >  8 weeks: *           ( 1)
> >  9 weeks: **********  (10)
> > 10 weeks: **********  (10)
> > 11 weeks: **          ( 2)
> > 
> > (I chose this range to exclude the 3.1 release delayed by the
> > kernel.org compromise.)
> > 
> > So it seems quite possible that 4.10 could be released later in January
> > or in February.
> > 
> > [...]
> 
> Ok, so a reasonable guess would be actually be 10 weeks, which puts us
> at the 29th of January?  An upstream stable update would come 3-4 weeks
> later.

The earlier cycles might also be 10 weeks, which adds more uncertainty.

[...]
> > >    - How long does Greg's LTS last?  We would spend at least a year of
> > >      it before January 22nd 2017.
> > 
> > About 15 months.
> >
> > [...]
> 
> So Greg's LTS will almost be over by the time 4.10 is released? Seems
> like we are not getting a lot from sticking with 4.4 then?

Sorry, either I mixed up maintainers there or I meant to say that we
would have 15 months *after* January 2017.  Greg typically maintains a
'longterm' branch for about 27 months:

2.6.32: 2009-12 .. 2012-03 (then transferred to Willy Tarreau)
3.0:    2011-07 .. 2013-10
3.4:    2012-05 .. 2014-08 (then transferred to Zefan Li)

So we can expect:

4.4:    2016-01 .. 2018-04

> From what I can gather so far:
> 
>  * We are looking at moving the freeze at least 2 months if we want
>    Linux 4.10.
>    - At +2 months, Linux 4.10 would be just before the "deep freeze"
>      (Assuming a 10 week release cycle for Linux).
> 
>  * If we stick with 4.4, the Debian Linux maintainers receives
>    practically no advantage from Greg's LTS effort.

No, we would benefit from that but this is very early to freeze the
kernel and we would need to do a lot of work on backporting hardware
support.

Ben.

-- 
Ben Hutchings
Sturgeon's Law: Ninety percent of everything is crap.

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Kernel version for stretch Ben Hutchings <ben@decadent.org.uk> - 2016-01-27 19:30 +0100
  Re: Kernel version for stretch Moritz Mühlenhoff <jmm@inutil.org> - 2016-01-28 20:10 +0100
    Re: Kernel version for stretch Ben Hutchings <ben@decadent.org.uk> - 2016-01-28 21:20 +0100
      Re: Kernel version for stretch Moritz Mühlenhoff <jmm@inutil.org> - 2016-01-30 15:40 +0100
        Re: Kernel version for stretch Philipp Kern <pkern@debian.org> - 2016-02-07 02:00 +0100
    Re: Kernel version for stretch maximilian attems <maks@stro.at> - 2016-01-29 00:10 +0100
      Re: Kernel version for stretch Moritz Muehlenhoff <jmm@inutil.org> - 2016-01-30 15:40 +0100
        Re: Kernel version for stretch maximilian attems <maks@stro.at> - 2016-01-30 18:40 +0100
  Re: Kernel version for stretch Niels Thykier <niels@thykier.net> - 2016-02-02 08:50 +0100
    Re: Kernel version for stretch Cyril Brulebois <kibi@debian.org> - 2016-02-02 14:30 +0100
      Re: Kernel version for stretch Karsten Merker <merker@debian.org> - 2016-02-03 08:40 +0100
        Re: Kernel version for stretch Rick Thomas <rbthomas@pobox.com> - 2016-02-03 19:40 +0100
        Re: Kernel version for stretch Martin Michlmayr <tbm@cyrius.com> - 2016-02-04 04:40 +0100
    Re: Kernel version for stretch Karsten Merker <merker@debian.org> - 2016-02-03 08:30 +0100
    Re: Kernel version for stretch Ben Hutchings <ben@decadent.org.uk> - 2016-02-05 04:10 +0100
      Re: Kernel version for stretch Niels Thykier <niels@thykier.net> - 2016-02-05 19:50 +0100
        Re: Kernel version for stretch Ben Hutchings <ben@decadent.org.uk> - 2016-02-14 17:00 +0100
          Re: Kernel version for stretch Martin Michlmayr <tbm@cyrius.com> - 2016-02-14 21:50 +0100
            Re: Kernel version for stretch Ben Hutchings <ben@decadent.org.uk> - 2016-02-15 13:20 +0100
    Re: Kernel version for stretch Mehdi Dogguy <mehdi@dogguy.org> - 2016-02-15 09:50 +0100
  [Decision] Kernel version for stretch Niels Thykier <niels@thykier.net> - 2016-02-24 22:50 +0100
    Re: [Decision] Kernel version for stretch Ben Hutchings <ben@decadent.org.uk> - 2016-03-02 12:30 +0100

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