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v2.9.1 "Hone" -- what the optimisation bars measure, and what clears them - #562

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feat/v2.9.1-optimise

Sep 27, 2026

Commits on Sep 27, 2026
- docs(plan): the SDRAM and DDR3 candidates, v2.9.1's scope, and the API surface
  
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- perf(bench): a dual-cabinet serialize workload, and ab_check.sh for any target
  
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- perf(core): serialize a Vs. cabinet into a reused buffer; ab_check compared A with A
  
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- fix(perf): give ab_check's candidate its own target dir too; prove the defect
  
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- docs(plan): decide S2 after v3.0.0; the CPU's SDRAM margin is 2, not 0
  
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- v2.9.1 "Hone" -- what the optimisation bars measure, and what clears them
  
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- docs(perf): replace a leftover placeholder; ab_check's header matches the fix
  
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- docs: the plan's mapper groups sum to their total; libretro says where serialize lives
  
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- test(libretro): a dual cabinet's own state round-trips through the C ABI
  
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