On Mon, Feb 15, 2021 at 12:21 AM Alexander Kanavin
<[email protected]> wrote:
>
> I’ve definitely seen diffoscope process take hours and hours and hours in 
> local builds. Trying it with these vim packages locally should still be done.

I forgot to mention that I did run diffoscope locally with the
offending vim packages and it took about 30 seconds (same as the AB
logs showed)

>
> Alex
>
> On Sun 14. Feb 2021 at 20.18, Joshua Watt <[email protected]> wrote:
>>
>> On Sun, Feb 14, 2021 at 6:19 AM Richard Purdie
>> <[email protected]> wrote:
>> >
>> > Regular users of the autobuilder will note that I've split the
>> > reproducible builds test out of the main oe-selftest build and into its
>> > own target build. This is because that test tends to run for a lot
>> > longer time period and it helps to see the result separately.
>> >
>> > I've only done this for master. If gatesgarth and dunfell want to
>> > follow, that should be straight forward with a change to the branch in
>> > autobuilder-helper. Obviously we should ensure this is working ok with
>> > master first but so far so good.
>> >
>> > It has already highlighted the difference between a successful run:
>> >
>> > https://autobuilder.yoctoproject.org/typhoon/#/builders/115/builds/2
>> > https://autobuilder.yoctoproject.org/typhoon/#/builders/119/builds/2
>> > (took 3-4 hours)
>> >
>> > and failing two failing runs:
>> >
>> > https://autobuilder.yoctoproject.org/typhoon/#/builders/116/builds/2
>> > https://autobuilder.yoctoproject.org/typhoon/#/builders/118/builds/2
>> > (took 9 hours)
>>
>> OK, I read through the code and unfortunately found a bug: when
>> attempting to make sure the "B" build doesn't use sstate, I misspelled
>> the SSTATE_MIRRORS, which means that the B build could have been
>> pulling from the sstate mirror when it was not supposed to. This has a
>> few implications:
>>
>>  1) It might explain why some of the reproducible results seem intermittent
>>  2) It might explain why there is such a time disparity between the tests
>>
>> Unfortunately, while it probably will help the intermittent results,
>> it probably means that the tests taking 9 hours is what is "supposed"
>> to happen, and they happen to be shorter sometimes because the B build
>> is pulling from sstate when it's not supposed to.
>>
>> >
>> > the time difference being the system trying to run diffoscope on vim-
>> > common :/.
>> >
>> > I'm aware I removed some recipes from the exclusions list after seeing
>> > multiple passing builds for all distros and we're now seeing test
>> > failures. My mistake was not waiting for the date to change and for
>> > builds to run on an autobuilder worker with a different umask.
>> >
>> > Meson is failing with a pyc file mismatch which diffoscope can't decode
>> > and despite trying for 5 hours, diffoscope hasn't given any data on why
>> > vim-common differs. I should have fixes in for quilt, valgrind, kernel-
>> > devsrc and cwautomacros. The umask fix may fix other issues too. Alex
>> > has improved the reporting so we can spot cases where exclusion is now
>> > longer needed.
>> >
>> > Cheers,
>> >
>> > Richard
>> >
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