https://issues.dlang.org/show_bug.cgi?id=24494

          Issue ID: 24494
           Summary: std.mmfile should take into account 256kb mapping in
                    Windows kernel
           Product: D
           Version: D2
          Hardware: All
                OS: Windows
            Status: NEW
          Severity: enhancement
          Priority: P1
         Component: phobos
          Assignee: nobody@puremagic.com
          Reporter: alphaglosined@gmail.com

As of Windows Internals 5, the cache manager will memory map on first read in 256kb chunks from a file into itself.

std.mmfile does not mention this, nor takes advantage of this information. Instead preferring smaller amounts.

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