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Killing macOS 11 support

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Avi Drissman

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Apr 2, 2025, 7:41:28 PMApr 2
to infr...@chromium.org
Every year we kill support for the oldest version of macOS. We'd originally planned to kill macOS 11 support in M139, but given our late start this year, we're thinking about killing it in M141, with M140 being the last release to support it.

Are there any objections / anything that we need to be worried about? Sorry for the sudden change in mstones.

Avi

Ben Pastene

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Apr 3, 2025, 12:55:41 PMApr 3
to Avi Drissman, Jonathan Pittman, Lindsay Pasricha, Robbie Iannucci, Chenlin Fan, infr...@chromium.org
+Jonathan Pittman & +Lindsay Pasricha are prob already in the loop for these plans?

Also +Robbie Iannucci & +Chenlin Fan in case keeping a mac-11 presence on chrome's infra for a bit longer has any 3pp concerns. 

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Avi Drissman

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Apr 4, 2025, 4:30:54 PMApr 4
to Lindsay Pasricha, Jonathan Pittman, Ben Pastene, Robbie Iannucci, Chenlin Fan, infr...@chromium.org
I can reach out to enterprise and see if they have enough runway for notice. If they're OK with it then we can aim for our original mstones. Will get back to you.

On Thu, Apr 3, 2025 at 2:09 PM Lindsay Pasricha <lind...@google.com> wrote:
Hi all,

Hardware/fleet-wise this does push a little burden on our limited mac arm64 capacity this year, new hardware will be incoming later than usual, so we're going to experience a crunch. Additionally, we were planning to move the Mac CQ to arm64 in 2H of this yr. Since this referenced branch date is in Sept, this means it will be Oct or even Nov when all branched builders phase out Mac11 tasks. 

While this also extends strain on the manual test team for coverage across more total MacOS versions as we also take on Mac16, I think infra is more of a concern for me.

But if  trying to scramble to drop earlier is just too much, then no worries and we'll see how to make it work.

Thanks,
--
Lindsay Pasricha
Chrome iOS,Mac and Android Engprod TL
Lind...@Chromium.org


On Thu, Apr 3, 2025 at 1:27 PM Jonathan Pittman <jmpi...@google.com> wrote:
I can drop macOS 11 when the only thing targeting it are the luci-go and infra builders that exist only because something else needs that OS version.




Avi Drissman

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Apr 4, 2025, 4:30:54 PMApr 4
to Lindsay Pasricha, Jonathan Pittman, Ben Pastene, Robbie Iannucci, Chenlin Fan, infr...@chromium.org
Enterprise seems on-board for us killing macOS 11 support in 139, so I'm going to aim for that target. I will do my best to free up the machines so that you don't have to do any scrambling. Sorry for inadvertently adding more chaos than is needed.

Will keep you posted.

Avi

Avi Drissman

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Apr 4, 2025, 4:30:54 PMApr 4
to Lindsay Pasricha, Jonathan Pittman, Ben Pastene, Robbie Iannucci, Chenlin Fan, infr...@chromium.org
Also, I posted a few projected removal targets for future years. Right now I'm aiming to remove more in the summer. If sliding those removal mstones (for future years, not this year) a bit earlier would significantly help you folks, let me know.

Lindsay Pasricha

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Apr 4, 2025, 4:30:54 PMApr 4
to Jonathan Pittman, Ben Pastene, Avi Drissman, Robbie Iannucci, Chenlin Fan, infr...@chromium.org
Hi all,

Hardware/fleet-wise this does push a little burden on our limited mac arm64 capacity this year, new hardware will be incoming later than usual, so we're going to experience a crunch. Additionally, we were planning to move the Mac CQ to arm64 in 2H of this yr. Since this referenced branch date is in Sept, this means it will be Oct or even Nov when all branched builders phase out Mac11 tasks. 

While this also extends strain on the manual test team for coverage across more total MacOS versions as we also take on Mac16, I think infra is more of a concern for me.

But if  trying to scramble to drop earlier is just too much, then no worries and we'll see how to make it work.

Thanks,
--
Lindsay Pasricha
Chrome iOS,Mac and Android Engprod TL
Lind...@Chromium.org


On Thu, Apr 3, 2025 at 1:27 PM Jonathan Pittman <jmpi...@google.com> wrote:
I can drop macOS 11 when the only thing targeting it are the luci-go and infra builders that exist only because something else needs that OS version.





On Thu, Apr 3, 2025 at 12:55 PM Ben Pastene <bpas...@chromium.org> wrote:

Jonathan Pittman

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Apr 4, 2025, 4:30:54 PMApr 4
to Ben Pastene, Avi Drissman, Lindsay Pasricha, Robbie Iannucci, Chenlin Fan, infr...@chromium.org
I can drop macOS 11 when the only thing targeting it are the luci-go and infra builders that exist only because something else needs that OS version.





On Thu, Apr 3, 2025 at 12:55 PM Ben Pastene <bpas...@chromium.org> wrote:

Avi Drissman

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Apr 4, 2025, 4:31:05 PMApr 4
to Lindsay Pasricha, Jonathan Pittman, Ben Pastene, Robbie Iannucci, Chenlin Fan, infr...@chromium.org
Right now, for example, for macOS 12 I'm thinking support ending with M150, with code removal in M151. The M150 branch cuts on June 1. What's the key date, the branch cut, or the stable ship dates?

On Fri, Apr 4, 2025 at 10:42 AM Lindsay Pasricha <lind...@google.com> wrote:
That sounds awesome, thank you Avi!

As far as summer vs earlier os drop dates I think early summer, such that branches are wrapping by the end of the summer, is generally good for us. 


Thanks,
--
Lindsay Pasricha
Chrome iOS,Mac and Android Engprod TL
Lind...@Chromium.org

Lindsay Pasricha

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Apr 4, 2025, 4:31:05 PMApr 4
to Avi Drissman, Jonathan Pittman, Ben Pastene, Robbie Iannucci, Chenlin Fan, infr...@chromium.org
Hi Avi,

I can go with any of those dates, we can go with branch bec we can extrapolate anything we need pretty well from there. Let's say for a branch on June 1, that ships early to mid July depending on the summer release freeze that happens typically around early July. Then 2 months after that is early Sept it would be out of the branches -at most- if it was an extended stable milestone, otherwise early August. 

Works for me if it's ok for the team schedule!


Thanks,
--
Lindsay Pasricha
Chrome iOS,Mac and Android Engprod TL
Lind...@Chromium.org

Lindsay Pasricha

unread,
Apr 4, 2025, 4:31:05 PMApr 4
to Avi Drissman, Jonathan Pittman, Ben Pastene, Robbie Iannucci, Chenlin Fan, infr...@chromium.org
That sounds awesome, thank you Avi!

As far as summer vs earlier os drop dates I think early summer, such that branches are wrapping by the end of the summer, is generally good for us. 

Thanks,
--
Lindsay Pasricha
Chrome iOS,Mac and Android Engprod TL
Lind...@Chromium.org
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