From: "KOSAKI Motohiro" <kosaki.motohiro@jp.fujitsu.com>
To: KAMEZAWA Hiroyuki <kamezawa.hiroyu@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>
Subject: Re: [PATCH] mm: evict streaming IO cache first
Date: Mon, 17 Nov 2008 17:32:32 +0900 [thread overview]
Message-ID: <2f11576a0811170032i6548e03die47f9e341f3ef9a@mail.gmail.com> (raw)
In-Reply-To: <20081117172202.343e1b35.kamezawa.hiroyu@jp.fujitsu.com>
>> > 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.
Yes.
I think akpm pointed out just this point.
> 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
> ==
Yes.
the patch handle this situation by special priority.
Umm..
Perhaps, I am missing your point?
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next prev parent reply other threads:[~2008-11-17 8:32 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-11-15 9:38 KOSAKI Motohiro
2008-11-16 0:58 ` Rik van Riel
2008-11-16 5:00 ` Andrew Morton
2008-11-16 18:15 ` Linus Torvalds
2008-11-16 21:20 ` Rik van Riel
2008-11-16 21:28 ` Hugh Dickins
2008-11-17 4:47 ` Andrew Morton
2008-11-17 6:19 ` Nick Piggin
2008-11-17 6:30 ` KAMEZAWA Hiroyuki
2008-11-17 6:39 ` KOSAKI Motohiro
2008-11-17 6:54 ` KAMEZAWA Hiroyuki
2008-11-17 7:03 ` KOSAKI Motohiro
2008-11-17 8:22 ` KAMEZAWA Hiroyuki
2008-11-17 8:32 ` KOSAKI Motohiro [this message]
2008-11-17 16:22 ` Rik van Riel
2008-11-17 16:22 ` Linus Torvalds
2008-11-17 16:27 ` Rik van Riel
2008-11-17 16:37 ` Linus Torvalds
2008-11-17 16:54 ` Rik van Riel
2008-11-17 17:06 ` Linus Torvalds
2008-11-17 17:16 ` [PATCH] vmscan: fix get_scan_ratio comment Rik van Riel
2008-11-17 17:32 ` KOSAKI Motohiro
2008-11-17 17:35 ` Linus Torvalds
2008-11-17 18:53 ` Rik van Riel
2008-11-17 20:23 ` Rik van Riel
2008-11-18 0:06 ` [PATCH] vmscan: evict streaming IO first Rik van Riel
2008-12-01 20:24 ` Andrew Morton
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