On Sun, 2021-02-14 at 13:17 -0600, Joshua Watt 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
The "good" news is that this didn't affect the autobuilder as it sets SSTATE_DIR to a common directory and doesn't use SSTATE_MIRRORS. > 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. I don't think we're to the bottom of this. If its not spending the time in diffoscope, something seems to cause builds with differences to take much longer... Cheers, Richard
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