Re: v3.4-rc2 out-of-memory problems (was Re: 3.4-rc1 sticks-and-crashs)

[Pekka Enberg]

On Mon, Apr 9, 2012 at 7:33 PM, Rik van Riel <riel@xxxxxxxxxx> wrote:
>> Attaching these files, since I can't really make anything out of the
>> latter.  Note that I started a few memory hogs (X, Firefox, Emacs with
>> Gnus), so overall memory footprint has grown to 768 MB.
>
> Looks like the "missing" 400MB is all in filesystem caches,
> specifically the dentry cache, the ext4 inode cache and
> buffer heads.
>
> That is perfectly fine, since those caches will be shrunk
> when the system needs memory.

CONFIG_SLUB, right? It will merge caches so you don't necessarily see
leaks in /proc/slabinfo. You can use "slub_nomerge" kernel parameter
to disable the merging.
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