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Zhengchao An
242424b0fc
* ci(perf): fit the baseline cache build to the post-LTO profile and self-heal nightly misses
Every build-baseline-cache run on 2026-07-15 died on its 60min ceiling
('exceeded the maximum execution time of 1h0m0s'): #4806 put thin LTO +
codegen-units=1 on [profile.release], pushing a single release build past
60min on sm-standard-2, so the baseline cache never populated. The measured
binary must keep the production profile, so raise the job budget to 100min
instead of weakening the profile.
Also make the A/B job self-heal a same-commit cache miss: when the candidate
commit equals the baseline commit (nightly/dispatch on main) and the restore
misses, build the binary once, reuse it for both phases, and save it back to
the cache under rustfs-baseline-<sha> — previously that miss made the rig
build the identical commit twice, which no job budget fits post-#4806. The
PR-context miss (candidate != baseline, opt-in gate) keeps the double-build
fallback and now documents that it will overrun and alert.
Refs rustfs/backlog#1152 (perf-3 follow-up).
* ci(perf): latest-wins concurrency for the baseline cache build
Consumers only restore the binary for the current origin/main tip, so a
superseded push build's output is dead weight; cancel it instead of stacking
~65min jobs on the shared sm-standard-2 pool when main merges quickly. A
skipped intermediate SHA at most costs one same-commit self-heal in the A/B
job.