linux-kernel - Re: 3.7-rc6 soft lockup in kswapd0

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Message-ID: <20121203182848.5536.qmail@science.horizon.com>
Date:	3 Dec 2012 13:28:48 -0500
From:	"George Spelvin" <linux@...izon.com>
To:	linux@...izon.com, mgorman@...e.de
Cc:	dave@...ux.vnet.ibm.com, hannes@...xchg.org, jack@...e.cz,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org, riel@...hat.com
Subject: Re: 3.7-rc6 soft lockup in kswapd0

> Almost three days, when it wouldn't live overnight before.
> As promised, I'm declaring victory.
> 
> The patch that worked (on top of -rc7) was Johannes Weiner's
> "mm: vmscan: fix endless loop in kswapd balancing"
> that added the zone_balanced() function to mm/vmscan.c:2400.
> 
> Thank you all very much!

Further update, uptime is now 1 week with no more problems.

Just checked dmesg; no complaints.  And kswapd0 is showing 0:09.08 of
CPU time for the week, more than cron but less than init.

Tested-by: George Spelvin <linux@...izon.com>
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