From: Rik van Riel <riel@redhat.com>
To: akataria@vmware.com
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
LKML <linux-kernel@vger.kernel.org>,
Lee Schermerhorn <Lee.Schermerhorn@hp.com>,
Dave Hansen <dave@linux.vnet.ibm.com>, Mel Gorman <mel@csn.ul.ie>,
"linux-mm@kvack.org" <linux-mm@kvack.org>
Subject: Re: [PATCH] Hugepages should be accounted as unevictable pages.
Date: Tue, 23 Jun 2009 17:55:33 -0400 [thread overview]
Message-ID: <4A414F55.2040808@redhat.com> (raw)
In-Reply-To: <1245793331.24110.33.camel@alok-dev1>
Alok Kataria wrote:
> On Tue, 2009-06-23 at 14:24 -0700, Rik van Riel wrote:
>> I can see something reasonable on both sides of this
>> particular debate. However, even with this patch the
>> "unevictable" statistic does not reclaim the total
>> number of pages that are unevictable pages from a
>> zone, so I am not sure how it helps you achieve your
>> goal.
>
> Yes but most of the other memory (page table and others) which is
> unevictable is actually static in nature. IOW, the amount of this other
> kind of kernel unevictable pages can be actually interpolated from the
> amount of physical memory on the system.
That would be a fair argument, if it were true.
Things like page tables and dentry/inode caches vary
according to the use case and are allocated as needed.
They are in no way "static in nature".
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next prev parent reply other threads:[~2009-06-23 21:54 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-22 21:25 [PATCH] Hugepages should be accounted as unevictable pages Alok Kataria
2009-06-23 3:25 ` KOSAKI Motohiro
2009-06-23 4:46 ` Alok Kataria
2009-06-23 5:05 ` KOSAKI Motohiro
2009-06-23 5:11 ` KAMEZAWA Hiroyuki
2009-06-23 5:54 ` Alok Kataria
2009-06-23 6:06 ` KAMEZAWA Hiroyuki
2009-06-23 19:28 ` Alok Kataria
2009-06-23 20:30 ` Lee Schermerhorn
2009-06-23 21:24 ` Rik van Riel
2009-06-23 21:42 ` Alok Kataria
2009-06-23 21:55 ` Rik van Riel [this message]
2009-06-23 22:06 ` Alok Kataria
2009-06-23 22:19 ` Dave Hansen
2009-06-23 22:55 ` Rik van Riel
2009-06-23 23:28 ` Alok Kataria
2009-06-23 23:48 ` Dave Hansen
2009-06-23 22:15 ` Dave Hansen
2009-06-23 22:23 ` Alok Kataria
2009-06-23 23:41 ` Dave Hansen
2009-06-24 0:08 ` Alok Kataria
2009-06-23 12:26 ` Lee Schermerhorn
2009-06-29 9:58 ` Mel Gorman
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