Paul <paul.carli...@gmail.com> added the comment:
> I agree with Josh. If you want to use O_DIRECT, use an unbuffered file object > and be sure to issue reads of the right size. I do not believe an unbuffered file uses O_DIRECT. This is why I use os.open(fpath, os.O_DIRECT). > Also I'm curious: why are you using O_DIRECT, and furthermore, why are you > using it to read into mmap'ed memory? I am testing a storage device and must use O_DIRECT to avoid the kernel's cache. I am using mmap because it was the simplest way to get a page-aligned memory buffer, which is required for direct IO. I believe that this is a bug regardless of the use of mmap, especially considering that this worked in Python 2. I believe the fix I have sent out for review addresses it adequately. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue38167> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
