Disagg stats to count mirrored writes and stepdown window duration

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    • Type: Improvement
    • Resolution: Unresolved
    • Priority: Major - P3
    • None
    • Affects Version/s: None
    • Component/s: None
    • None
    • Storage Engines - Foundations
    • 25.278
    • Storage Execution 2026-09-28
    • None

      This is the gap in WT-18234 that hasn't been implemented in WT-18419:

      A mirrored-write counter and window duration alongside the existing step-down stats, and deliberately exercising the cache-pressure path; the __wt_evict_needed branch that already logs here should degrade gracefully rather than stall.

            Assignee:
            Wei Hu
            Reporter:
            Wei Hu
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              Created:
              Updated: