Re: [PATCH] Hugepages should be accounted as unevictable pages.

From: Rik van Riel
Date: Tue Jun 23 2009 - 18:56:32 EST

Alok Kataria wrote:
On Tue, 2009-06-23 at 14:55 -0700, Rik van Riel wrote:
Alok Kataria wrote:
On Tue, 2009-06-23 at 14:24 -0700, Rik van Riel wrote:

Things like page tables and dentry/inode caches vary
according to the use case and are allocated as needed.
They are in no way "static in nature".

Maybe static was the wrong word to use here. What i meant was that you could always calculate the *maximum* amount of
memory that is going to be used by page table and can also determine the
% of memory that will be used by slab caches.

My point is that you cannot do that.

We have seen systems with 30% of physical memory in
page tables, as well as systems with a similar amount
of memory in the slab cache.

Yes, these were running legitimate workloads.

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