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Date: Mon, 17 Nov 2008 17:22:02 +0900
From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Subject: Re: [PATCH] mm: evict streaming IO cache first
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To: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Andrew Morton <akpm@linux-foundation.org>, Rik van Riel <riel@redhat.com>, Linus Torvalds <torvalds@linux-foundation.org>, LKML <linux-kernel@vger.kernel.org>, linux-mm <linux-mm@kvack.org>, Gene Heskett <gene.heskett@gmail.com>
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On Mon, 17 Nov 2008 16:03:48 +0900
"KOSAKI Motohiro" <kosaki.motohiro@jp.fujitsu.com> wrote:
> > How about resetting zone->recent_scanned/rotated to be some value calculated from
> > INACTIVE_ANON/INACTIVE_FILE at some time (when the system is enough idle) ?
> 
> in get_scan_ratio()
> 
But active/inactive ratio (and mapped_ratio) is not handled there.

Follwoing 2 will return the same scan ratio.
==case 1==
  active_anon = 480M
  inactive_anon = 32M
  active_file = 2M
  inactive_file = 510M

==case 2==
  active_anon = 480M
  inactive_anon = 32M
  active_file = 480M
  inactive_file = 32M
==



-Kame


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