linux-kernel - Re: kswapd craziness in 3.7

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Message-ID: <50BDBF1D.60105@suse.cz>
Date:	Tue, 04 Dec 2012 10:15:09 +0100
From:	Jiri Slaby <jslaby@...e.cz>
To:	Johannes Weiner <hannes@...xchg.org>
CC:	Zdenek Kabelac <zkabelac@...hat.com>, Mel Gorman <mgorman@...e.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Rik van Riel <riel@...hat.com>,
	George Spelvin <linux@...izon.com>,
	Johannes Hirte <johannes.hirte@....tu-ilmenau.de>,
	Thorsten Leemhuis <fedora@...mhuis.info>,
	Tomas Racek <tracek@...hat.com>, Jan Kara <jack@...e.cz>,
	Dave Hansen <dave@...ux.vnet.ibm.com>,
	Josh Boyer <jwboyer@...il.com>, Valdis.Kletnieks@...edu,
	Bruno Wolff III <bruno@...ff.to>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: kswapd craziness in 3.7

On 12/04/2012 10:05 AM, Zdenek Kabelac wrote:
> Dne 3.12.2012 20:18, Johannes Weiner napsal(a):
>> Szia Zdenek,
>>
>> On Mon, Dec 03, 2012 at 04:23:15PM +0100, Zdenek Kabelac wrote:
>>> Ok, bad news - I've been hit by  kswapd0 loop again -
>>> my kernel git commit cc19528bd3084c3c2d870b31a3578da8c69952f3 again
>>> shown kswapd0 for couple minutes on CPU.
>>>
>>> It seemed to go instantly away when I've drop caches
>>> (echo 3 >/proc/sys/vm/drop_cache)
>>> (After that I've had over 1G free memory)
>>
>> Any chance you could retry with this patch on top?

It does not apply to -next :/. Should I try anything else?

>> From: Johannes Weiner <hannes@...xchg.org>
>> Subject: [patch] mm: vmscan: do not keep kswapd looping forever due
>>   to individual uncompactable zones
...
> What seems to be triggering condition on my machine - running laptop for
> some days - and having   Thunderbird reaching 0.8G (I guess they must
> keep all my news messages in memory to consume that size) and Firefox
> 1.3GB of consumed
> memory (assuming massive leaking with combination of flash)

Similar here, 5 days of uptime (suspend/resumes in between). FF 900M, TB
250M, java 1.1G, kvm 550M, X 400M, cache 1.5G out of 6G total mem. And boom.

thanks,
-- 
js
suse labs
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