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Asked: 2026-05-29T16:59:33+00:00

Is there a way to disable file cache for a particular process ? I

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Is there a way to disable file cache for a particular process ?

I have two process running A and B.

I want file opened by A to remain in cache.

and
I don’t want to enable file cache for B so It doesn’t replace the file cached by process in the memory.

Is there a way to disable file cache for a particular process?

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  1. Editorial Team

    None that I know of… the only option are global/device-specific:

    Another point:

    Even IF you could do what you ask for there is no guarantee that any other processes (C, D, E etc.) behaves in a way that “the file cached by process A in the memory” gets replaced…

    UPDATE – after comments from OP ragarding performance:

    Linux offers (as most modern OS) something called “memory-mapped file” – basically this is a way to access the file’s contents in-memory… the OS assigns the file (depending on the given params) part of the address space and loads the content of the file into that address space (again: exact behaviour depends on the given params).

    You would do this in Process A to achieve what you want…

    Checkout the mmap API calls for details.

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