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[v3-3-test] Reduce canary schedule frequency (AMD 4->2/day, ARM 8->2/day) (#68821) - #69039
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…day) (#68821) The scheduled canary runs the full matrix on all versions and is by far the most expensive run type. AMD ran 4x/day and ARM 8x/day; halving AMD alone saves ~1,900 compute-h / 2 weeks (~6% of AMD CI), and cutting ARM 8->2/day removes 75% of the ARM canary schedule. The two crons are interleaved (AMD 01:58 & 13:58, ARM 07:28 & 19:28) so a full-matrix canary still runs roughly every ~6h, alternating architecture - so the 'trust earned on main' backstop keeps a ~6h effective cadence for arch-agnostic regressions (12h for arch-specific ones) while the scheduled compute drops substantially. It also relieves runner-pool queuing, since each canary is the heaviest job-flood. check_ci_workflows_in_sync.py expected blocks updated to match. (cherry picked from commit 5226a1b) Co-authored-by: Jarek Potiuk <jarek@potiuk.com>
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June 26, 2026 18:52
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June 26, 2026 18:52
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The scheduled canary runs the full matrix on all versions and is by far the most
expensive run type. AMD ran 4x/day and ARM 8x/day; halving AMD alone saves
~1,900 compute-h / 2 weeks (~6% of AMD CI), and cutting ARM 8->2/day removes 75%
of the ARM canary schedule.
The two crons are interleaved (AMD 01:58 & 13:58, ARM 07:28 & 19:28) so a
full-matrix canary still runs roughly every ~6h, alternating architecture - so
the 'trust earned on main' backstop keeps a ~6h effective cadence for
arch-agnostic regressions (12h for arch-specific ones) while the scheduled
compute drops substantially. It also relieves runner-pool queuing, since each
canary is the heaviest job-flood.
check_ci_workflows_in_sync.py expected blocks updated to match.
(cherry picked from commit 5226a1b)
Co-authored-by: Jarek Potiuk jarek@potiuk.com