What is the performance penalty for write access to files in a managed
directory vs. a fstab entry?
I have a program that is very sensitive to write latency, and am being
pressured to use amd or automount to access a NAS instead of my trusty fstab
entry.
My app uses a transactional log file that resides on a NAS. I'd prefer to keep
a simple fstab entry and use O_DIRECT to access the file, but if there is no
penalty, I would switch. Does O_DIRECT have meaning for automount or
amd-managed files? (isn't amd user-space, so it would need to copy data
anyway?)
thanks,
-Kenny
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