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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Mon, 9 Apr 2012 20:00:17 +0300
From:	Pekka Enberg <penberg@...nel.org>
To:	Rik van Riel <riel@...hat.com>
Cc:	Sven Joachim <svenjoac@....de>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	werner <w.landgraf@...ru>, David Rientjes <rientjes@...gle.com>,
	Hugh Dickins <hughd@...gle.com>, linux-kernel@...r.kernel.org,
	Oleg Nesterov <oleg@...hat.com>
Subject: Re: v3.4-rc2 out-of-memory problems (was Re: 3.4-rc1 sticks-and-crashs)

On Mon, Apr 9, 2012 at 7:33 PM, Rik van Riel <riel@...hat.com> 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.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/