linux-kernel - Re: [PATCH 4/5] add isolate pages vmstat

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Date:	Thu, 9 Jul 2009 19:22:26 +0900
From:	Minchan Kim <minchan.kim@...il.com>
To:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
Cc:	LKML <linux-kernel@...r.kernel.org>, linux-mm <linux-mm@...ck.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Wu Fengguang <fengguang.wu@...el.com>,
	Christoph Lameter <cl@...ux-foundation.org>,
	David Rientjes <rientjes@...gle.com>,
	Rik van Riel <riel@...hat.com>,
	Hugh Dickins <hugh.dickins@...cali.co.uk>
Subject: Re: [PATCH 4/5] add isolate pages vmstat

On Thu, Jul 9, 2009 at 5:14 PM, KOSAKI
Motohiro<kosaki.motohiro@...fujitsu.com> wrote:
> ChangeLog
>  Since v4
>   - Changed displaing order in show_free_areas() (as Wu's suggested)
>  Since v3
>   - Fixed misaccount page bug when lumby reclaim occur
>  Since v2
>   - Separated IsolateLRU field to Isolated(anon) and Isolated(file)
>  Since v1
>   - Renamed IsolatePages to IsolatedLRU
>
> ==================================
> Subject: [PATCH] add isolate pages vmstat
>
> If the system have plenty threads or processes, concurrent reclaim can
> isolate very much pages.
> Unfortunately, current /proc/meminfo and OOM log can't show it.
>
> This patch provide the way of showing this information.
>
>
> reproduce way
> -----------------------
> % ./hackbench 140 process 1000
>   => couse OOM
>
> active_anon:146 inactive_anon:0 isolated_anon:49245
>  active_file:41 inactive_file:0 isolated_file:113
>  unevictable:0
>  dirty:0 writeback:0 buffer:49 unstable:0
>  free:184 slab_reclaimable:276 slab_unreclaimable:5492
>  mapped:87 pagetables:28239 bounce:0
>
>
> Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
> Acked-by: Rik van Riel <riel@...hat.com>
> Acked-by: Wu Fengguang <fengguang.wu@...el.com>
Reviewed-by: Minchan Kim <minchan.kim@...il.com>

Kind regards,
Minchan Kim
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