How can I bypass the buffer cache or disable it for a process?

Reply: Bob Bishop : "Re: How can I bypass the buffer cache or disable it for a process?"
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From: Friedrich Doku <friedrichdoku2030_at_u.northwestern.edu>
Date: Tue, 04 Aug 2026 22:45:48 UTC

Hello,

Is there a way to reliably run a single userspace process such that all of
its I/O (reads and writes) bypasses the UFS buffer cache?

Best,
Friedrich