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  1. WiredTiger
  2. WT-11968

Investigate if PowerPC atomic primitives provide sufficient memory barriers

    • Type: Icon: Bug Bug
    • Resolution: Unresolved
    • Priority: Icon: Major - P3 Major - P3
    • None
    • Affects Version/s: None
    • Component/s: None
    • StorEng - Defined Pipeline

      WT-8959 looked at the x86 and ARM64 platforms to ensure that the atomic primitives provided sufficient memory barriers as needed by WiredTiger. WiredTiger expects a full memory barrier, which is bidirectional for all memory accesses and not just the memory location the primitive operates on.

      We also need to confirm the same for PowerPC; it is suspected that atomic increment doesn't necessarily provide the memory barrier guarantees that we need. Depending upon the appetite this ticket can be generalised across a larger set of atomic primitives and more platforms.

            Assignee:
            backlog-server-storage-engines [DO NOT USE] Backlog - Storage Engines Team
            Reporter:
            sulabh.mahajan@mongodb.com Sulabh Mahajan
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              Created:
              Updated: