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Re: Very aggressive memory reclaim

To: Minchan Kim <minchan.kim@xxxxxxxxx>
Subject: Re: Very aggressive memory reclaim
From: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx>
Date: Tue, 29 Mar 2011 11:55:03 +0900 (JST)
Cc: kosaki.motohiro@xxxxxxxxxxxxxx, Dave Chinner <david@xxxxxxxxxxxxx>, John Lepikhin <johnlepikhin@xxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, xfs@xxxxxxxxxxx, linux-mm@xxxxxxxxx
In-reply-to: <BANLkTimHPFMUOCFAruF5J4OMHSkZsMsAgA@xxxxxxxxxxxxxx>
References: <20110328215344.GC3008@dastard> <BANLkTimHPFMUOCFAruF5J4OMHSkZsMsAgA@xxxxxxxxxxxxxx>
> Recently, We had a similar issue.
> http://www.spinics.net/lists/linux-mm/msg12243.html
> But it seems to not merge. I don't know why since I didn't follow up the 
> thread.
> Maybe Cced guys can help you.
> 
> Is it a sudden big cache drop at the moment or accumulated small cache
> drop for long time?
> What's your zones' size?
> 
> Please attach the result of cat /proc/zoneinfo for others.

If my remember is correct, 2.6.38 is included Mel's anti agressive 
reclaim patch. And original report seems to be using 2.6.37.x. 

John, can you try 2.6.38?



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