Investigate high cache size usage with precise checkpoints enabled in test/format

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    • Type: Task
    • Resolution: Fixed
    • Priority: Major - P3
    • WT12.0.0, 8.3.0-rc0
    • Affects Version/s: None
    • Component/s: Test Format
    • None
    • Storage Engines, Storage Engines - Transactions
    • SE Transactions - 2025-10-24, SE Transactions - 2025-11-07
    • 8

      When precise checkpoints were enabled in test/format, the cache size was increased substantially to avoid cache and eviction-related issues. While this helped stabilise test runs, it has unintentionally led to limited coverage of cache stress scenarios. As a result, eviction rarely triggers in the background, reducing our ability to uncover cache and eviction-related bugs under realistic workloads.

      This ticket aims to investigate ways to use a more reasonable cache size with precise checkpoints enabled, while still allowing the cache to reach target and trigger levels. The goal is to ensure that eviction can occur naturally in the background and test coverage includes realistic cache pressure.

            Assignee:
            Chenhao Qu
            Reporter:
            Sid Mahajan
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              Created:
              Updated:
              Resolved: