On 2025年02月21日 09:33, Martin Wege via Cygwin wrote: > Could Cygwin implement posix_fadvise()? Which Windows API would be > suitable to map posix_fadvise() functionality? Could and does since 2006 (read commnets for details): https://cygwin.com/git/?p=newlib-cygwin.git;a=commitdiff;h=7636b58590621af3c341c3eb37a017e0e6598d3f See also Cygwin packages man-pages-posix posix_fadvise(3p) and man-pages-linux posix_fadvise(2). Windows: https://learn.microsoft.com/en-gb/windows/win32/api/fileapi/nf-fileapi-createfilea?redirectedfrom=MSDN#caching_behavior -- Take care. Thanks, Brian Inglis Calgary, Alberta, Canada La perfection est atteinte Perfection is achieved non pas lorsqu'il n'y a plus rien à ajouter not when there is no more to add mais lorsqu'il n'y a plus rien à retrancher but when there is no more to cut -- Antoine de Saint-Exupéry