linux-kernel - Re: Out of memory on 3.5 kernels

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Date:	Fri, 21 Sep 2012 21:49:31 +0200
From:	Nico Schottelius <nico-kernel20120920@...ottelius.org>
To:	Arend van Spriel <arend@...adcom.com>
Cc:	Nico Schottelius <nico-kernel20120920@...ottelius.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>
Subject: Re: Out of memory on 3.5 kernels

Latest results:

- it seems I can trigger the problem by doing the backup to my external
  usb disk

- the usb disk uses jfs

- jfs seems to take the major part in cache memory consumption

I've attached dmesg and slabtop outputs of various stages:

- before and during the backup

I've had to abort the backup, because memory pressure made the system
almost completly unusable.

Hope this helps & someone has a clue on what went wrong were...

Cheers,

Nico

-- 
PGP key: 7ED9 F7D3 6B10 81D7 0EC5  5C09 D7DC C8E4 3187 7DF0

View attachment "dmesg1" of type "text/plain" (63435 bytes)

View attachment "dmesg2" of type "text/plain" (16667 bytes)

View attachment "dmesg3-start-backup" of type "text/plain" (12571 bytes)

View attachment "dmesg4-during-backup-1.3g-slab" of type "text/plain" (3977 bytes)

View attachment "dmesg5-system-unusable" of type "text/plain" (43066 bytes)

View attachment "dmesg6-system-partly-usable-still-backup-1.5g-slab" of type "text/plain" (43066 bytes)

View attachment "dmesg7-system-heating-slab-2.4g" of type "text/plain" (43066 bytes)

View attachment "mounts-during-backup" of type "text/plain" (1882 bytes)

View attachment "slabtop6" of type "text/plain" (1494 bytes)

View attachment "slabtop7" of type "text/plain" (1526 bytes)

View attachment "slabtop4-during-backup" of type "text/plain" (1486 bytes)