linux-kernel - Re: [PATCH 0/5] Prevent kswapd dumping excessive amounts of memory in response to high-order allocations V3

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Message-ID: <20101209111930.GQ5422@csn.ul.ie>
Date:	Thu, 9 Dec 2010 11:19:30 +0000
From:	Mel Gorman <mel@....ul.ie>
To:	Simon Kirby <sim@...tway.ca>
Cc:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Shaohua Li <shaohua.li@...el.com>,
	Dave Hansen <dave@...ux.vnet.ibm.com>,
	Johannes Weiner <hannes@...xchg.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-mm <linux-mm@...ck.org>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 0/5] Prevent kswapd dumping excessive amounts of memory
	in response to high-order allocations V3

Bah, this should have been PATCH 0/6 of course :(

On Thu, Dec 09, 2010 at 11:18:14AM +0000, Mel Gorman wrote:
> There was a minor bug in V2 that led to this release.  I'm hopeful it'll
> stop kswapd going mad on Simon's machine and might also alleviate some of
> the "too much free memory" problem.
> 
> Changelog since V2
>   o Add clarifying comments
>   o Properly check that the zone is balanced for order-0
>   o Treat zone->all_unreclaimable properly
> 
> Changelog since V1
>   o Take classzone into account
>   o Ensure that kswapd always balances at order-09
>   o Reset classzone and order after reading
>   o Require a percentage of a node be balanced for high-order allocations,
>     not just any zone as ZONE_DMA could be balanced when the node in general
>     is a mess
> 
> <SNIP>

-- 
Mel Gorman
Part-time Phd Student                          Linux Technology Center
University of Limerick                         IBM Dublin Software Lab
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