New subject: [Issue 10542] On Windows, allow using previous write behavior

17 Jul 2026


      https://bugs.openldap.org/show_bug.cgi?id=10542
Issue ID: 10542
           Summary: On Windows, allow using previous write behavior
           Product: LMDB
           Version: 1.0.0
          Hardware: All
                OS: Windows
            Status: UNCONFIRMED
          Keywords: needs_review
          Severity: normal
          Priority: ---
         Component: liblmdb
          Assignee: bugs@openldap.org
          Reporter: hyc@openldap.org
  Target Milestone: ---
ITS#9017 changed write behavior in Windows to use WRITE_THROUGH writes and
eliminate use of FlushFileBuffers(). Supposedly this yields faster write
performance because flushes are very slow. However, other users report this
approach is actually much slower than LMDB 0.9.
Add a compile-time flag to revert to the original write behavior.
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[Issue 10542] New: On Windows, allow using previous write behavior