Re: [PATCH] mm: add parameter to disable faultaround

[Andrew Morton]

On Tue, 25 Nov 2014 15:51:58 +0900 Chanho Min <chanho.min@xxxxxxx> wrote:

> The faultaround improves the file read performance, whereas pages which
> can be dropped by drop_caches are reduced. On some systems, The amount of
> freeable pages under memory pressure is more important than read
> performance.

The faultaround pages *are* freeable.  Perhaps you meant "free" here.

Please tell us a great deal about the problem which you are trying to
solve.  What sort of system, what sort of workload, what is bad about
the behaviour which you are observing, etc.


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